Ondulin, or, as it is also called, Euroslate, is not new to the building materials market. Over more than half a century of history, it has established itself as a strong and durable roofing. The popularity of ondulin flooring is explained by both its affordable cost and operational advantages, and ease of installation. It is the last factor that often plays a decisive role in private construction, when you need to build a roof with your own hands. Today we will look at the features of Euro slate and talk about how to use it to create a dry and reliable roof.
Characteristics of roofing material, its advantages and disadvantages
Ondulin looks very similar to classic slate and is the same flat sheets with a wavy surface. If we consider the structure and manufacturing technology, then this roofing material is much closer to roofing felt - a cardboard base and bitumen impregnation are also used for its production.
Ondulin is combined with ordinary slate only appearance and similar installation technology
Thoroughly purified cellulose fibers are dyed in the mass and pressed, obtaining blanks of the desired length and shape. After this, the sheets are impregnated with a bitumen mixture, while simultaneously exposing high pressure and temperature. This not only speeds up the process, but also makes it more uniform. To make the material both durable and elastic, fiberglass is added to the impregnation, synthetic resins and mineral fillers. This technology makes it possible to obtain a roofing covering that differs:
- high resistance to low and high temperatures, as well as their sudden changes;
- minimal water absorption;
- resistance to bacterial and fungal contamination, as well as chemical reagents;
- long service life - although manufacturers give 15–20 years of warranty for roofing material, individual ondulin roofs have been regularly performing their functions since the 50s of the last century;
- light weight - a sheet of Euro slate weighs only 6 kg, which greatly facilitates the installation of the material and its transportation;
- simplified installation technology, which allows you to cover the roof with your own hands, without the involvement of specialists and expensive equipment;
- flexibility, which is important when arranging complex roofs with multi-slope slopes, valleys, external corners, skylights, etc.;
- affordable cost - although ondulin is 30–40% more expensive than traditional slate, this difference is offset by savings in lumber for the roofing frame and transportation costs.
And yet, when choosing ondulin as a roofing covering, we should not forget that it was developed as a temporary material for quick repair and restoration of destroyed roofs in the post-war period. Of course, Euro slate has much fewer disadvantages than advantages, but they must be taken into account both during design and installation, and during operation.
Installation errors often lead to deformation of the ondulin, so you should not neglect the rules for its installation
It should be remembered that ondulin does not tolerate negligence in the arrangement wooden frame. Due to the sheathing being too thin or not rigid enough, the sheets may bend over time and the roof will begin to leak. In addition, walking on such flooring will be unsafe. Due to the peculiarities of production, this type of roofing is presented in only four colors - green, black, red, brown and their shades, so there is no need to talk about any color variety. In addition, cellulose impregnated with bitumen has a tendency to fade in the sun, and in poorly lit places it quickly becomes overgrown with moss. However, with proper care, such troubles can be avoided.
Video: pros and cons of ondulin roofing in reviews of real owners
Roof installation for ondulin
When constructing roofs with ondulin flooring, almost the same frame is used as for slate roofing. The only difference is that lighter euro slate does not require additional structural reinforcement.
A standard ondulin roof consists of several components:
- Wooden frame. The basis of the structure are rafters, which are made of wooden beam with a section from 80x80 mm to 150x150 mm or boards 50–60 mm thick and 120–150 mm wide, mounted on edge.
- Thermal insulation. When constructing roofs for residential buildings, a warm roofing cake is created. Fibrous materials such as basalt or glass wool, as well as slab insulation made of extruded polystyrene foam, are most often used as insulation.
- Vapor barrier. When using fiber thermal insulation, a vapor barrier membrane is required, which protects the insulation from getting wet.
- Waterproofing layer. To protect the wooden frame and insulation from possible leaks and drops of condensation, a polymer film is laid on it. It is mounted on top of the thermal insulation and secured to the rafters with a construction stapler.
- Countergrid. This design element is needed in order to organize ventilation gap between the lower and top layers roofing pie. Without a counter beam, the movement of air in the under-roof space will be difficult, which can lead to wetting and damage to the insulation. The counterbeam is nailed along the rafter legs, simultaneously fixing the waterproofing with it.
- Lathing. Depending on the slope of the roof slope, a sparse base made of unedged boards or a solid flooring made of OSB or moisture-resistant plywood can be used under the ondulin.
- Euroslate. The material is laid with an overlap in one wave, and fastening to the wooden sheathing is done with special nails with wide heads.
Of course, if it is necessary to cover the roof of some undemanding outbuilding with ondulin, then the design of the roofing pie is significantly simplified. In this case, insulation, vapor barrier membrane and counter beam are not used. As for waterproofing, you shouldn’t give it up. A layer of polymer film or roofing felt can be installed on top of the sheathing - so wooden structures will be maximally protected from moisture and snow blowing.
The design of the roofing pie of an ondulin roof has much in common with the design of both soft and slate roofs
Getting started with the installation of wooden elements rafter system and roofing pie, do not forget to treat the lumber with an antiseptic with insecticidal protection and a fire retardant. This will increase the structure’s resistance to fire and prevent wood from being damaged by fungi and insects.
Video: key features of ondulin roofing
What materials and tools will be needed for work?
When starting to build a roof with ondulin coating, you should prepare:
- Ondulin sheets. Considering that they have standard dimensions of 200x95 cm, it will not be difficult to calculate how much material will be needed. Later we will return to the method of determining the exact amount of Euro slate, taking into account trimming and joining.
- Beam with a cross-section of at least 40x40 mm for the construction of a counter-lattice.
- Boards to build sparse sheathing or plywood (OSB), which will be needed to make a solid base.
- Nails for constructing sheathing and fastening ondulin.
- Cornice strips, or, according to the manufacturer’s classification, an edge gong (in common parlance “chip”), which is needed to protect the edge wooden base from dripping moisture.
- Valleys, which will be needed for arranging the joints of adjacent roof slopes.
- Ridge elements. Like other additional parts, Ondulin special corner molding has the same structure, color and specifications, as roofing sheets. To protect the gap between the ridge and the roofing sheet from snow and debris, a universal ventilated infill is used. By the way, the latter is also used on the cornice, closing the gap between the Euro slate and the outer board of the sheathing.
- Tape insulation to protect the passage of utility lines and junctions with vertical walls, as well as rubber aprons for waterproofing round chimneys and ventilation ducts.
In addition, depending on the type of roof (cold or warm), it is necessary to stock up on roll or slab thermal insulation, vapor barrier membrane, as well as waterproofing film or roofing felt.
When choosing additional elements, you should focus on the color of the main coating - the tone of materials from different manufacturers can differ significantly
We have already said above that when installing ondulin you do not need any special tool. Here is a complete list of what may be required during the work process:
- wood hacksaw with medium or fine teeth;
- carpenter's hammer with a forked shank;
- Phillips screwdriver;
- construction stapler equipped with staples for fastening film materials;
- cutting knife with replaceable blades;
- roulette;
- marker or pencil;
- cord;
- chalk or graphite powder.
It should be remembered that using a power tool will significantly reduce the execution time. construction work. If possible, the hacksaw can be replaced with a hand-held circular saw or electric jigsaw, and a screwdriver - a screwdriver with a suitable set of bits.
How much ondulin will be needed: calculation method
- draw up a roof drawing indicating the exact dimensions and locations of additional elements;
- break down the roof plan into simple geometric shapes;
- find the area of all parts and perform addition;
- multiply the amount by a correction factor of 1.2;
- divide the calculation result by the effective area of one sheet.
Although the square footage of a standard Euro slate sheet is 2 x 0.95 = 1.9 square meters. m, in fact the effective area is no more than 1.6 square meters. m. This is due to the fact that during installation, part of the roofing material is covered by adjacent sheets.
A detailed roof plan not only simplifies the design process, but also allows you to perform calculations with the required accuracy
To check the correctness of the calculations, the total area of all roof slopes must be divided by the useful quadrature and a margin for trimming and joining the material must be added to the result obtained. Depending on the type of roof, the correction can range from 10–15% for simple gable and hip structures to 15–20% if the roof has complex geometry:
- for slopes with a slope of up to 10 o, the longitudinal overlap should be at least 30 cm, and the lateral overlap should be two waves. In this case, the material consumption is adjusted according to the upper value of the fork;
- for roofs with a slope of more than 15 o, an overlap of 15–20 cm and a transverse overlap of one wave is sufficient. Less material will be needed, so a minimum supply within the above limits is taken.
When determining the molding of additional elements, it is necessary to take into account both their standard length and the width of the overlap. Usually, at the junctions of ridge, chip and valley elements, a 15-centimeter overlap of adjacent parts is quite sufficient.
How to fasten euro slate: which roofing nails are suitable and how many of them are needed
To install ondulin, special nails with a wide head and a curved washer are used - thanks to them, reliable fastening and a tight fit to the tops of the waves. On sale you can find two types of fasteners - with a monolithic head and with a cap that covers the metal head of the nail. Both can be made from polyvinyl chloride or polypropylene. These materials have sufficient elasticity to protect the mounting points from leaks, and in addition, they are resistant to sunlight and are not susceptible to atmospheric factors.
To fasten ondulin, special nails with wide heads made of high-quality plastic are used
Manufacturers produce nails in the same shades as the main coating, so you can always choose fasteners to match the roof. Their rod is made of galvanized steel and has a length of 70–75 mm with a standard diameter of 3.55 mm, thanks to which the metal part reliably fits into the sheathing to a depth of more than 10 mm.
Each sheet of Euro slate must be attached at 20 points, which allows you to quite accurately calculate the required number of hardware. However, the calculation does not end there - you should also determine the number of nails with which the valleys, skates and chips will be attached. Knowing the length of these sections, determine total number additional elements. The result obtained is multiplied by 6 (each of them is fastened at 6 points) and added to the previously obtained figure. By making a small adjustment for damage and loss of fasteners during operation, you can obtain the most accurate amount of their consumption.
How and with what to cut ondulin
Cardboard sheets impregnated with bitumen-polymer compositions are quite soft material, so they can be used for cutting as circular saw, and a regular hacksaw for wood. The only difficulty is that the saw teeth very quickly become clogged with resin during operation.
Ondulin is quite easy to cut hand saw, so you can do without power tools
To avoid having to clean the tool from adhering bitumen after 1-2 cuts, experts recommend lubricating the cutting part with any mineral oil. If this method does not seem very aesthetic to you, then you can use another advice from experienced roofers - regularly moisten the hacksaw with cold water.
Euroslate roof staircase
Ondulin is a fairly durable and flexible material, but do not let this fool you. You should walk on the finished flooring as carefully as possible, stepping on the tops of the waves only in those places where the sheathing boards pass underneath. You can make moving on the roof safer using a special pitched ladder and walkways. They will also be useful in the future - for roof inspections and routine repairs.
A roofing ladder will save time and nerves during installation and during roof maintenance
IN construction stores roofing ladders are made of steel, aluminum profile and wood, however, experts recommend making such devices yourself. Firstly, this will allow you to save a little, and secondly, homemade stairs and the bridges will correspond to the characteristics of the roof slopes.
To build a pitched staircase you will need:
- boards 160x25 cm;
- bars with a section of 50x50 mm;
- nails.
Cutting the boards required length, they are laid on flat surface. After this, crossbars are nailed in increments of 40–50 cm. At the top of the staircase, the ladder is equipped with a wooden “hook” made from pieces of boards and timber - with its help, the device can be hooked onto the ridge. When determining the parameters of the toe, be sure to take into account the steepness of the slopes, its own weight and the dimensions of the stairs. If you are interested minimum dimensions mating part, then experts advise making a hook at least 30 cm long.
Do-it-yourself roof covering with ondulin
The construction of an ondulin roof includes several stages:
- production of sheathing;
- laying roofing material;
- fastening of additional elements;
- arrangement of places for passage through the roof of ventilation and chimney pipes, utilities, etc.
In addition, when constructing warm roof It will be necessary to consider the ventilation of the under-roof space and install thermal insulation. We will consider the features of all these processes in detail.
Arrangement of sheathing
Due to the insufficient rigidity of ondulin, the sheathing for this roofing material must take into account the angle of inclination of the roof. Otherwise, during heavy snowfalls, the decking may bend and the roof will begin to leak.
The design of the roof sheathing made of rigid bitumen sheets must correspond to the slope of the roof slopes
There are three main ways to arrange a base for Euro slate:
- continuous sheathing made of shag boards, plywood or OSB sheets on slopes with a slope of less than 10 o;
- sparse lathing made of timber or boards 25 mm thick, located in increments of up to 45 cm - on a roof with a slope of 10–15 o;
- sparse sheathing made of unedged lumber or timber, installed at a distance of up to 60 cm from each other, if the slope has a steepness of more than 15 o.
Installation of a wooden base is carried out in the classical way. On cold-type roofs, timber or boards are nailed directly to the rafters, and when arranging an insulated roofing pie, a counter batten is used.
Step-by-step instructions for installing ondulin on the roof
Laying ondulin has much in common with installing slate flooring. The differences relate only to the fastening scheme of the sheets and some nuances of the arrangement of the base. It is best to carry out work at air temperatures from -5 to +30 °C, choosing clear, calm weather.
Having finished laying the last row, they begin to install additional elements. The construction of the roof is completed by arranging the places where pipes and communications pass through the flooring.
Video: ondulin laying technology
Ridge installation
To arrange the tops of the roof, special ridge elements measuring 100x36 cm are used, which are produced using the same technology as the main covering. When installing them, follow the following rules:
After installing the last panel, the gap between the ridge and the ondulin is closed with universal filler, and plugs are installed at the ends.
When arranging ridges hip roof It is necessary to leave allowances for ridge elements of 20–25 cm on each side. After installation, the protruding edges are heated with a construction hairdryer, straightened and attached to the sheathing.
Video: features of ridge installation
Attaching the pliers
When installing the gable element, adhere to the following scheme:
After the last tong is secured, its edge is cut flush with the ridge.
Installation of valleys
At the junction of adjacent slopes, an additional sheathing with a width of at least 25 cm from the center line is constructed. The valley is installed in the direction from the lower overhang to the ridge, releasing the starting element at a distance of 5–7 cm from the edge of the sheathing.
To fasten the valley elements, reinforced sheathing is used, otherwise the joint of adjacent slopes may suffer from snow load
As with the installation of other extensions, the overlap of adjacent panels should be at least 15 cm. The edges of the sheets are cut at a distance of 3–5 cm from the axis of the groove, after which they are fastened along all adjacent waves. In this case, nails must be driven no closer than 3 cm from the edge of the valley elements.
Video: design option for a valley roof made of ondulin
Arrangement of junctions and passages through the roof
Places where the roof meets the walls and other vertical elements protected with a special covering apron. This additional element is a shortened sheet of ondulin with a flat wing located at right angles to the wavy surface. In addition, areas prone to leaks can be protected using Onduflesh self-adhesive tape, which provides reliable waterproofing.
The junctions with the walls are equipped with the help of special sealing aprons
If they pass through the roof ventilation pipes and others engineering Communication, then special insert elements are placed around them, which can be purchased simultaneously with the sheets for flooring. If this is not possible, you can use homemade aprons made of thick rubber or seal the joints with Onduflesh tape. In the case where a metal chimney passes through the roof, it is necessary to build a special passage box with thermal insulation or use a factory roof cut. For maximum protection against leaks, a non-flammable Master-Flash cuff is installed over the chimney.
In places where metal chimneys pass, a special roofing groove is installed
We should not forget that ondulin consists half of bitumen. For this reason it is prohibited to use metal pipes, if the temperature of the exhaust gases exceeds 500 °C, and also if coal is used to fire the furnace. In any case, the chimney must be equipped with a spark arrester.
Ventilation of the under-roof space
It should be noted that ondulin flooring is much less prone to condensation than soft roofing or metal roofing. However, if the roof structure provides for the installation of insulation, then ventilation of the under-roof space cannot be avoided.
Ventilation of the under-roof space is carried out due to counter beams and gaps between the ridge and the flooring
You can create a ventilation gap between the roofing material and the thermal insulation using a counter batten, which is attached along the rafters. The cross-section of the counter beam should be such as to provide a gap between the sparse sheathing and the waterproofing layer of at least 3–5 cm. As for the air outlet at the top of the slopes, it is provided by special ventilated profiles that are installed under the ridge elements.
Video: installation of ondulin and roofing accessories
https://youtube.com/watch?v=FYgcRccu1TUInstallation errors
Neglecting the technology and rules for laying ondulin, novice roofers often make the following mistakes:
- The pitch of the sheathing does not correspond to the angle of inclination of the slopes.
- The wooden frame at the valleys and ridges of the roof has not been reinforced.
- The cross-section of the sheathing elements does not correspond to the snow load in this region.
- The thickness of the counter beam is not enough for normal ventilation of the under-roof space.
- Violation of the pattern of fastening sheets to the sheathing.
- The absence of hydro- and vapor barrier layers when using a warm roofing cake.
- Using regular nails.
- Installation of sheets pre-loaded in the transverse direction (either tension or compression is prohibited).
- Insufficient vertical or horizontal overlap.
- Installation of rows without displacement, as a result of which junction points of four sheets appear.
Perhaps, having familiarized yourself with the most annoying mistakes, you will prevent them from happening in your work and thereby be able to avoid troubles both during installation and during the subsequent operation of the roof.
As you can see, there is nothing complicated about covering the roof with ondulin. You just need to follow the technology provided by the manufacturer and listen to the advice of experienced craftsmen. Only in this case can one hope not only for the absence of leaks and durability, but also for the fact that the roof will have a neat and attractive appearance. And this is also important, isn’t it?
Share with your friends!The roof is a very important element of the house, since it is the roof that bears the brunt of the elements - rain, snow, wind. Among a variety of roofing materials, many developers choose ondulin. It is quite durable, beautiful and reliable material. In addition, you can install ondulin yourself; the installation technology is simple; the main thing is to carefully study the operating rules. If you don't know how to lay ondulin – the instructions will help you do the job without errors.
When building a private house, developers try to make the roof not only reliable, but also attractive in appearance. After all, if in high-rise buildings the roof is practically invisible, then in a cottage it is one of the most important design elements.
Ondulin is a material that can satisfy most consumer needs. Ondulin roofing is durable, reliable, and due to the fact that the material is available in different colors, you can choose an option that will ideally complement the overall design of the house. The technology for laying ondulin recommended by the manufacturer is simple, but you must strictly follow the rules specified in the instructions.
A little about the properties of the material
Onduline is the name for roofing material produced by Onduline SA. It was this company that developed the technology for manufacturing this type of roofing.
Advice! Sometimes you can hear that ondulin is the name given to a whole group of soft roofing materials made on the basis of bitumen and cellulose, but this name is incorrect, since the French company patented its invention and only its products can be called ondulin.
The composition of real ondulin includes:
- cellulose fiber base;
- bitumen;
- resins;
- mineral fillers.
As a result of use unique technology the result is a durable, waterproof material that looks like colored slate.
Pros of ondulin
The main advantages of ondulin are due to the performance qualities of the material:
- Ondulin is an excellent waterproofing agent. The roof is completely waterproof and even very heavy rain will not disrupt its protective properties;
- ondulin roofing tolerates temperature changes well, and it serves equally well in cold and hot weather;
- ondulin is a chemically inert material, it does not decompose upon contact with solvents, acids, oils and alkalis, and is not affected by fungi and bacteria;
- the low weight of the material is a significant advantage, since it will not be difficult to carry this material, lift it onto the roof and install it in place.
Cons of ondulin
Of course, ondulin is not ideal and, like any other material, it has its drawbacks:
- Over time, ondulin fades in the sun. The change in color is not critical, however, compared to the new material, the used roof will have a less saturated shade.
Advice! If the bright color of the roof is very important for the owners, then a faded roof can be renewed with your own hands using the simplest method - painting. You will only need to select a special paint suitable for roofing materials made on the basis of bitumen.
- Indicators mechanical strength ondulin levels decrease at extreme temperatures. Therefore, the rules prohibit performing work that involves walking on the roof in frost or extreme heat. At low temperatures ondulin can crack, and in the heat it softens somewhat, so it can bend under load.
Roof installation
Let's look at how to properly lay ondulin, provided that the work will be done with your own hands.
We are building the sheathing
Ondulin sheets are laid on the sheathing, and the type of sheathing depends on the type of roof:
Advice! Before constructing the sheathing, you will need to insulate the roof and lay a vapor barrier material.
- If the roof slopes have a slope exceeding 15 degrees, then build a sheathing with a distance between elements of 60 cm.
- At an inclination angle of 10-15 degrees, the distance between the sheathing parts should be reduced to 45 cm.
- On roofs with a small slope angle (5-10 degrees), the construction of a continuous sheathing from sheets of plywood or boards is required.
Advice! As a material for the construction of sheathing, it is recommended to choose timber from species coniferous trees. As a rule, a 25 mm thick board or timber with a section of 50 by 50 mm is used. Before starting work, the material must be treated with fire-fighting or antiseptic impregnations.
Preparation of materials
To cover the roof you will need the following set of materials:
- Ondulin sheets. Their number depends on the area of the roof and its shape. When calculating the area, you need to remember that the sheets of material will need to be laid with an overlap.
- Nails for fastening ondulin. It is important to use only special roofing nails made of galvanized steel. Distinctive feature These nails have a large head made of polymer material, which ensures tightness at the joint.
- Roofing components - gable and ridge elements, covering aprons, eaves fillers, valley elements, etc. The number and range of components depend on the roof design and its size.
In addition, you will need the following tools:
- for marking sheets - a tape measure, a colored pencil, an evenly cut piece of ondulin, which is convenient to use as a ruler;
- hammer.
Since it is impossible to use only whole sheets when laying sheets on the roof, the question undoubtedly arises: how to cut ondulin? It must be said that the cutting method is very simple: you need to cut ondulin using a conventional tool, the material does not crack or chip when cut, so strips of any required width can be cut from the sheet.
So, the need arose to cut ondulin - how to cut this material? You can use a regular hacksaw with the average size tooth To make the cutting process easier, experienced installers recommend using this method: lubricate the saw blade with oil. If possible, you can use a circular or electric reciprocating saw. This cutting method is less labor intensive.
Laying sheets
The technology for laying ondulin sheets is simple, however, when performing the work you must adhere to certain rules. The installation scheme used must ensure complete waterproofness of the roof. Let's look at how to do the work yourself:
- Roof repairs should be carried out under certain temperature conditions. The temperature should be above zero, but not exceed 30 degrees Celsius. Failure to comply with this condition may lead to deformation of the sheets during installation.
- You will need to determine in advance the prevailing wind direction at the construction site location. The laying of ondulin begins from the bottom of the slope, located on the leeward side. This installation method will reduce the risk of bleeding even in strong winds.
- Having laid the sheet, you need to make sure that it lies flat both horizontally and vertically. The first row of sheets is laid so that an overhang 5-7 cm wide is formed.
- The sheets are fastened with roofing nails driven into the sheathing. One sheet takes 20 pieces. Half is hammered into the bottom row in each wave. And 5 pieces are hammered in the middle and upper parts. These nails are staggered across one wave. It is very important that the fastening technology is not compromised. If, when doing the work yourself, the sheets are not secured correctly, the manufacturer will void the warranty.
- The second and all remaining even rows should begin by installing half a sheet of ondulin. This laying pattern is used to ensure that the joints of the sheets in the rows do not coincide.
- If the roof has internal corner(endow), then a special element is installed (purchased complete with ondulin). To install the valley element, an additional continuous sheathing is built to a width of 25 cm from the center of the corner. The elements are installed from the cornice upwards with an overlap of 15 cm wide. The ondulin sheets, between which the valley is located, are cut at a distance of 5 cm from its center.
- The tongs and the end are decorated with purchased ondulin elements. They are installed with an overlap and secured with nails.
- To design the junctions with vertical surfaces(for example, to a pipe) a special part is used - a covering apron.
- To waterproof the joints, a special tape is used - Onduflesh.
- If it is necessary to fasten ondulin to metal, self-tapping screws should be used instead of roofing nails.
Beginners in the roofing business who plan to repair the roof with their own hands are advised not only to carefully study the instructions for installing roofing material, but also to visually see how ondulin is laid - video materials will help to better understand the most difficult moments and help to avoid mistakes when performing the work.
Ondulin (euro slate, onduline) has been used as a roofing material for more than half a century. During this time, it has proven itself to be excellent, facilitated by such advantages as ease of installation of ondulin, low weight and affordable cost.
Roofing ondulin is preferred by people who care about the environmental friendliness of their home. After all, Euro slate does not contain asbestos, which is prohibited in many countries; it is based on cellulose mixed with bitumen. A minerals and binding additives provide it with strength and reliability. Besides, a private house, covered with ondulin, is beautiful and elegant.
The warranty period for ondulin is 15 years, provided that the ondulin installation technology is followed. This is where we will stop. Let's consider step by step what requirements need to be met in order for the quality of work to meet the standards.
Do-it-yourself ondulin installation - instructions
Technology for installing an ondulin roof in stages.
1. Calculation of ondulin on the roof
The easiest way is to use the calculator on the seller’s website or contact a consultant. But to have an initial idea, you need to divide the total area of all roof slopes and divide by the usable area of one sheet. Add 5 to 15% for waste. The amount of waste depends on the complexity of the rafter system.
2. Installation of sheathing under ondulin
Due to the fact that ondulin is a flexible roofing material, its installation technology involves attaching sheets to a wooden sheathing. For roof sheathing under ondulin, 60x40 timber is used.
Sheathing pitch for ondulin
- a slope angle of up to 10° (1:6) requires the installation of a continuous sheathing, otherwise the sheet will bend;
- angle 10 - 15° (1:4) - sheathing pitch 450 mm;
- angle over 15° - pitch 610 mm.
Nuance. Professionals advise not to skimp on the sheathing and to make it continuous in all cases. In this case, the sheets will not bend either from the heat or under snow or wind loads.
An error in nailing the sheets can lead to the sheet becoming deformed, so the sheathing timber must be fastened correctly.
You can ensure their parallel arrangement if you use a pattern. Laying a piece of timber between the previous and subsequent sheathing timber will be a good help.
In the place of future fastening ridge strip additional battens need to be installed.
Note. Installation of a waterproofing film is not a mandatory step when installing an ondulin roof. Therefore, the need for its installation is determined by the owner.
3. Installing the valley strip
Please note that it is installed before the installation of sheets begins. Its installation is carried out on special clamps. You need to make an additional continuous sheathing underneath. The process of its arrangement is shown in more detail in the diagram.
4. Installation of ondulin sheets
Installation begins with the correct markings. Using a pencil, you need to draw a thin line along which the screws will be screwed. The lines on the sheet are located at a distance equal to the distance between the sheathing bars.
Advice. To make the line even, despite the ondulin waves, you can do the following: mark the distance along the height of the wave, lay the sheet on the sheet and draw a line along the second sheet. Then the first one will have a smooth and clear stripe.
To ensure that working at height does not create inconvenience, you must first cut the ondulin into certain pieces (if the cottage has broken slopes). You can cut ondulin using a jigsaw, grinder or hacksaw.
In order not to get confused about where to attach which sheet, you need to number them and put the numbers on the drawings.
Advice. To prevent the saw from getting stuck in the ondulin, it must be lubricated with oil.
How to attach ondulin correctly?
To do this you need to adhere to technology. First, let's start installing the first sheet. It is recommended to start work from the leeward side. Then the covering wave will not be subject to wind load.
In addition, due to some properties of ondulin, during its installation it is necessary to maintain a certain temperature regime.
Ondulin is mounted at temperatures from 0 to 30°. Working in this temperature zone eliminates two disadvantages of ondulin:
- fragility to fracture. This is due to the fact that in colder times the risk of material damage and cracks increases.
Nuance. If you need to replace the sheet, it is better to pre-drill holes for the screw in the sheet.
- stretching the material. Therefore, in hot weather, the material should not be laid stretched.
Advice. Many workers try to reduce installation time by nailing stretched sheets. When the temperature changes, such a sheet becomes deformed. Subsequently, in order to eliminate such defects, it is necessary to completely cover the roof.
Correct installation of the first sheet of ondulin will make installation easier. Therefore, you need to carefully align the sheet along the end and the cornice. At the same time, ondulin should not protrude beyond the cornice by more than 50 mm. Otherwise, water will overflow through the gutter drainage system, and the sheet itself may bend, which will not look aesthetically pleasing.
Nuance. The first and each subsequent sheet is firmly attached, only after checking for horizontalness. To do this you need to use a level.
The procedure for attaching subsequent sheets of ondulin is shown in the photo.
Ondulin is laid in a checkerboard pattern with obligatory longitudinal and transverse overlap. To achieve this, installation of the second row begins with half a sheet.
It is important to know that the amount of overlap is affected by the angle of inclination of the slope. Namely:
- the slope angle is up to 10° - the longitudinal overlap is two waves, the transverse overlap is at least 200 mm.
- an angle of 10-15° - the longitudinal overlap is one wave, the transverse overlap is at least 160 mm.
- angle over 15° - the longitudinal overlap is one wave, the transverse overlap is at least 140 mm.
5. Laying ondulin on the roof
The reliability of fastening euro slate depends on the type of hardware used and the method of fastening it.
Since all fasteners remain visible and other methods have not yet been invented, it is better to use hardware with a head that matches the color of the material. In addition, they consist of a nail, a wide head and a gasket - this ensures tight installation.
For metal sheathing, self-tapping screws with a metal drill are used.
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For wooden sheathing, nails with a special head are suitable, which protects the metal from external factors.
Such nails require attention during installation.
It is impossible to cover a heavily hammered nail or one that is not completely hammered in with a head. As a result, the reliability of fixation decreases.
Professionals advise using new nails for ondulin. Their cap is monolithic and can withstand hammer blows.
The hardware is attached strictly to the wave, to its highest point. In this case, the lower and upper parts of the sheet must be secured in each wave, and in the middle - in a zigzag.
The hardware fastening diagram is shown in the photo.
How to properly attach ondulin is shown in the figure.
6. Additional elements (ondulin components)
The installation of ondulin does not end there. To your Vacation home had a presentable appearance, and the roof was reliably protected from leaks, you need to install decorative elements. These include the ridge, cornice, wind strip and valley.
The ridge is mounted at the junction of two slopes. The mandatory overlap must be at least 120 mm. You can buy a skate, or you can make it yourself. For this top sheets they are wound through the joint and nailed to the top of the opposite slope. True, this can only be done when it is hot outside and the ondulin is soft enough. The place where the ridge is attached can be decorated with a wooden plug.
Nuance. The ridge is installed on pre-installed battens.
A special insulating self-adhesive tape must be placed under the ridge. If you skimp on it, the snow will be blown under the ridge and flow onto the roof. After all, waterproofing is not provided for ondulin. And, the design shown in the photo will reliably protect the attic or attic from rain and melt water.
Advice. The same tape can be installed in the place where the ondulin sheet overhangs. This will prevent snow from blowing in from under the eaves, and will also allow for natural ventilation in the attic. In addition, the attic will become inaccessible to small birds or insects.
The construction of unventilated roofs involves the use of sealant instead of tape.
- The cornice or wind strip is installed according to the wave of the sheet. The overlap should be at least 10 cm.
- Adjacent to a wall or around protruding elements. For this purpose, a special covering apron is used. Its use guarantees a sealed roof assembly.
7. Natural light
In order to ensure the penetration of daylight, you can install a hatch window under the ondulin. Regular skylights are not suitable for these purposes.
However, today the market offers such a material as translucent ondulin. During installation regular sheet is replaced by a translucent one, this can significantly reduce the time, complexity and cost of window installation.
You can give an ondulin roof an exclusive look by combining various colors during the execution of work.
Video instructions for installing ondulin
Conclusion
As we can see, working with such material as roofing ondulin You can cover the roof not only of a private house, but also of a garage, gazebo or bathhouse. If you adhere to the tips and recommendations, and also follow the instructions, you can install an ondulin roof with your own hands.
Euroslate roofing looks beautiful on residential buildings and buildings for various purposes, successfully withstands severe wind loads and precipitation. In order for the roofing covering to last the entire service life declared by the manufacturer (about 50 years), before starting independent installation work, you need to familiarize yourself in detail with how to lay ondulin.
Specifics of Euroslate
Ondulin looks similar to the usual asbestos-cement wavy slate. At the same time, modern roofing material is much lighter (the weight of a sheet measuring 2000x950 mm is about 6 kg), more aesthetically attractive and made from materials that are safe for health. The basis of Euro slate is pressed cellulose fiber impregnated with distilled bitumen. The outer durable, weather-resistant coating is made from mineral filler and thermosetting resins. Ondulin is painted in certain colors using mineral pigments.
Due to the structure of the sheet, Onduline roofing material can be easily processed with conventional tools - for cutting, use a regular wood hacksaw or electric saw. Working cloth It is advisable to lubricate with oil to simplify the cutting process. The ondulin sheet is easy to cut in any direction.
To attach the decking to the roof, it is recommended to use special nails for Euro slate. They have a wide cap and are equipped with a special seal, thanks to which moisture does not get inside the roofing pie at the places where the ondulin is attached. You can also use self-tapping screws: both for laying euro slate on a wooden sheathing, and for mounting it on a metal sheathing. To facilitate and speed up the progress of work, it is necessary to apply powerful screwdriver or drill. To avoid damage to the roofing material, the degree of tightening of the screws should be properly controlled.
Preparation for installation of the coating
Before purchasing a coating for a roof under construction or repair, you must correctly calculate required amount euroslate sheets. The useful area of ondulin depends on the principle of its installation. Standard option, suitable for roofs with a slope angle of more than 10°, is a lateral overlap of one wave and a vertical overlap of 150 - 200 mm. In this case, the useful area of the euro slate sheet is 1.60 - 1.64 m2. A separate calculation is required usable area sheet for roofs, the slope angle of which does not exceed 10°. To ensure the reliability and moisture resistance of the roofing, ondulin is laid with a lateral overlap of two waves and a vertical overlap of 300 mm.
In order to properly install the covering and not damage the roofing material, laying ondulin should not be done in hot weather or at air temperatures below -5°C. Heated Euro slate softens and easily deforms under local load, when sub-zero temperature the material becomes brittle and can crack under mechanical stress.
Before laying ondulin, you need to take care of preparing the sheathing. The sheathing is mounted directly on the rafters (during construction) or on top of the old roofing (during repairs). The type and pitch of the sheathing varies depending on the angle of the roof slope:
- angle 5-10° - a continuous sheathing of edged boards 25x100 or 25x100 mm is required;
- angle 10-15° - a sheathing is mounted from 50x50 mm bars or edged boards with a pitch of 450 mm (along the axes of the sheathing);
- angle more than 15° - a sheathing made of 50x50 mm bars or edged boards is attached with a pitch of 600 mm (along the axes of the elements).
Pine is the best material for roof sheathing. This type of wood is resistant to biological destruction due to its high resin content and holds fasteners well. The lumber must be dry to avoid warping and deformation of the deck, and treated with agents to increase the fire resistance of the wood. The sheathing is attached to the rafters using screws or nails.
To reduce material consumption and minimize the number of scraps, it is advisable to calculate in advance the optimal amount of vertical overlaps. The main thing that given value was no less than that established for a given angle of inclination of the slope.
Laying roof covering on the roof
Detailed instructions for laying Euro slate will help you correctly install roofing decking made of ondulin and materials similar in structure, which are mass-produced by many manufacturers. Installation errors can lead to roof leaks; incorrectly installed ondulin can be torn off or broken by heavy winds.
To make an ondulin roof look beautiful, you should nail the material, focusing on a pre-tensioned cord. In this case, the heads of the fasteners will be located in even rows, and not randomly. To fasten one sheet, 20 nails are required.
In order not to damage the sheets of material already laid on the roof, when installing ondulin it is necessary to use a ladder that hooks onto the ridge and does not put pressure on the finished coating.
To mark the guides when laying sheets, it is necessary to tighten the cords at the end of the roof and at the ends of the slopes. The extent to which the roof covering extends beyond the edge of the roof depends on the chosen stormwater system. The edge of the roof covering should be located approximately along the axis of the storm gutter, if provided.
To properly lay the roofing material, the first sheet of ondulin is mounted in one of bottom corners, focusing on the stretched cords to avoid distortions and subsequent trimming of the sheets. The bottom row of roofing material is attached especially firmly - it must be nailed into the crest of each wave.
For the next row, you need to cut one sheet lengthwise into two halves. If you start each even row with a half sheet, the number of joints is reduced and the roofing deck has higher strength. To fasten the second and subsequent rows of ondulin to the roof, it is enough to drive nails through one wave of the sheet.
The pitched roof is crowned with a ridge; for its arrangement it is best to use branded products from the Ondulin company so that the roof looks as organic as possible. The ridge covering must overlap the edge of the top row of sheet covering by at least 150 mm. The material is nailed vertically to the ridge beam and to the euro-slate covering through the wave.
When arranging a roofing pie complex roof, it is necessary to properly waterproof the joints and install the valleys. Manufacturers of ondulin roofing offer to install branded valleys and use a special waterproofing tape. You can also use bitumen-based sealants.
If it is necessary to ensure ventilation of the under-roof space, special elements are installed under the eaves to prevent the penetration of birds and insects. If the roof is not ventilated, it is necessary to fill the gaps with special material.
To decorate the ends, a special material is attached to the edges of the roof slopes, which acts as a windproof strip. If ondulin is mounted on the roof in warm weather and is sufficiently elastic, you can simply tuck the edges of the sheets protruding beyond the plane of the slope and secure it with nails on the back side of the rafters.
Before you begin installing ondulin yourself, it is recommended that you familiarize yourself with a specially prepared video, where experts will tell you how to carry out the work correctly.
Cellulose-bitumen roofs are distinguished by their affordable price, long service life and ease of installation. That is why roofs are increasingly being built with one’s own hands from Ondulin, and not from materials that are more difficult to process. By following the installation technology, you can be sure that the roof will last for more than one generation!
Advantages of building a roof with your own hands from Ondulin
The reliability of the material is evidenced by the unprecedentedly long warranty period for water resistance from the manufacturer - as much as 15 years! At the same time, bitumen sheets do not deform in the sun and withstand high-degree frosts. And the rough surface of Ondulin allows the snow to melt right on the roof, preventing the convergence of large layers.
If you re-roof your house yourself, then only with Ondulin. And there are several reasons for this:
- the material is practically non-flammable;
- the roof can easily withstand medium-sized hail;
- For installation you only need a hammer, a wood saw and a construction knife.
Types of roofing from the manufacturer Ondulin
Before buying corrugated bitumen sheets, you should familiarize yourself with their types and purchase the ideal option:
- Ondulin Smart - sheets measuring 1.95x0.96 m and weighing 6.3 kg;
- Ondulin DIY - sheets are 2 waves narrower, which reduces their weight to 5 kg;
- Ondulin tiles – sheets standard size 1.95 x 0.96 m, imitating real tiles, weighing 5.9 kg.
The thickness of Ondulin sheets has remained unchanged for more than 70 years and is 3 mm. So, in the case of reconstruction of only part of the roof, you can be sure of the interchangeability of the sheets.
General rules for constructing roofs from Ondulin
When purchasing a roofing covering, you should pay attention not only to the integrity of the sheets and the quality of their painting, but also to accompanying documents. Thus, all Ondulin materials are accompanied by instructions for their installation and requirements for the installation of the sheathing. Strict adherence to the instructions guarantees the durability of the roof and the strength of the fastenings.
Lathing requirements
The first thing you need to decide is whether the roof will be insulated and whether it is necessary waterproofing film? If not, the sheathing can be installed directly onto the rafters.
If additional waterproofing of the roof is planned, a ventilation gap should be made between the roofing covering and the film. To do this, the waterproofing is rolled out along the rafters, fixed on top with a counter batten, and only then the sheathing is filled.
The frequency of lathing under Ondulin depends on the angle of inclination and slope of the roof:
- for roofs with a slope from 1/11 to 1/6 and an angle from 5 to 15 degrees, a continuous sheathing is required;
- for roofs with a slope of 1/6 to 1/4 and an angle of 10-15 degrees, you can make sparse lathing with a maximum pitch of 45 cm;
- for other roofs with a large slope, the maximum sheathing pitch is 61 cm.
Ondulin is not suitable for flat roofs. As a continuous sheathing, you can use OSB boards, plywood, fiberboard boards or boards nailed without a gap. For sparse lathing, you can use a board with a thickness of 2.5 cm or bars with a thickness of 5 cm.
To increase the reliability of the roof, it is better not to use the maximum pitch of the sheathing and do it more often. This is especially true for areas with hazardous natural phenomena.
How to install Ondulin on roofs depending on the slope angle
Thanks to the markings applied to Ondulin sheets, you no longer need to make your life difficult by measuring distances for correct fixation of the roofing material. The applied markings are suitable for all roofs with a slope angle greater than 15 degrees; the installation process itself is extremely simple:
The top of the wave of the outermost sheet should be on the wind board. In order not to stretch or shrink the sheets, an additional external beam is attached to the protruding sheathing at the required distance.
For roofs with a slope angle of less than 15 degrees, the installation process is slightly different:
- lateral overlap of sheets for roofs with a slope of up to 10 degrees - 2 waves;
- end overlap (top row over bottom) for roofs up to 10 degrees - 30 cm, for roofs 10-15 degrees - 20 cm;
- In this case, you should not be guided by the markings on the sheets; the distance between the rows of nails fixing the center of the sheet, for roofs with a slope of up to 10 degrees - 55 cm, for roofs of 10-15 degrees - 45 cm.
In other words, the nails nail the roofing sheets to the sheathing, so for thin sheathing it is especially important to calculate the distances accurately so that the nails do not end up being driven into the air. The principle of fixing sheets is shown more clearly in the diagram.
Don't skimp on the number of nails! The bottom of the sheet is always fixed along each wave, otherwise the reliability of fastening of the roofing material cannot be guaranteed. Despite the fact that you can walk along Ondulin, during the installation process it is better to use stairs and construction walkways.
Otherwise, the flexible sheet may stretch under human weight during fixation and subsequently collapse.
Design of individual roof elements
When installing the roof the main problem– correctly connect the material to the chimney or to the wall of the house, and also close the edges and the ridge. But thanks to ready-made additional elements and accessories, it is very easy to give the roof a complete look, even for people who have not yet gotten their hands on construction.
So, to decorate the top edge pitched roof A tong or wind strip works well. After laying the bitumen sheets, a cornice board is nailed to the end so that it is level with the top edge of the sheets. The selected corner element is placed on it, and the gaps between the gable and the roof are closed with a special filler. After this, the tong is fixed with nails along each wave. The sides of the roof with the wind board are closed in the same way.
You can also use a ready-made skate. It is laid after the roof is completely covered with sheets on both sides. Its installation begins on the same side from which the laying of the roofing material began - on the opposite side to the wind direction. The overlap of the ridge element is 12-15 cm, but you need to ensure that its end completely overlaps the top of the sheet wave. After filling the gaps between the ridge and the roof, you can begin to fix the ridge with nails in each wave.
If you need to seal the joint between the chimney pipe and the roof, you can use a special sealing tape and a covering apron. To do this, after the Ondulin sheets have already been laid, an apron is laid on the front edge of the pipe from below and cut so that it extends beyond the pipe by one wave on each side. The apron is nailed into each wave.
A sealing tape is glued to the top of the apron and extends to the chimney. The tape is glued to the sides and back so as to cover the junction of the roof and the chimney.
There is no need to lay an apron here, just fix the tape with nails every 30 cm or at the top of each wave. The upper edge of the tape is pressed against the chimney with a metal strip.
At the back of the chimney, an additional sheet of Ondulin is laid and fixed, cut in width so as to extend beyond the edges of the pipe in one wave.
The side junctions of the roof and the wall are also sealed with joint tape. The self-adhesive tape begins to be laid from top to bottom so that its lower edge completely covers the wave of the sheet. The upper edge of the tape is pressed with a metal strip, and the lower edge is nailed to the wave in increments of 30 cm.
But for the horizontal connection between the roof and the wall, you will again need a covering apron. It is laid on top of the roofing sheets close to the wall and fixed along each wave.
A sealing tape is glued on top, extending onto the wall and the apron itself, and its upper edge is pressed with an aluminum strip. Interestingly, it is not necessary to attach an apron, it is decorative element. The sealing of the seams is ensured by butyl rubber tape on an aluminum base.
Restoring an old roof in a couple of days
If roof repairs are constantly postponed due to the fact that the family has nowhere to move while the new roof is removed and installed, you can use the “hood” technology invented by Ondulin. Due to the light weight of bitumen sheets, they can be laid on top of the old roofing without fear for the strength of the rafters.
On top old roof the lathing is stuffed, and Ondulin sheets are laid on it according to the standard pattern. At the same time, you can live in peace in the house, because the roof is not going anywhere! The process of restoring a roof with old slate is shown in detail in the video:
