Carrying out repair work involves the use of a fairly large number of installation components. Typically, nails are used, however they are not always the best solution for surfaces such as drywall. This material very thin and the nail holes can damage it. Professional craftsmen recommend using a special mounting adhesive when working with drywall, which will be beneficial from both a practical and economic point of view.
Knauf Perlfix drywall adhesive is considered one of the best in this niche; it is an excellent alternative to nails and screws.
Peculiarities
The Knauf company was created in the middle of the last century. The small company quickly turned into a huge manufacturing concern building materials thanks to the responsibility of the owners and careful quality control at every stage of product production. Today Knauf are one of the leaders in their niche, their products are presented all over the world.
Perlfix glue is one of the most purchased products. The main task The product is a frameless surface coating sheet materials on a gypsum basis. There are only two types of adhesives that differ from each other both in ingredients and in the level of adhesion to the surface: regular Perlfix and Perfix GV.
A simple mixture is made for covering bases with plasterboard, and with additional gypsum fiber for gypsum plasterboard.
The material of the coating itself is not very important, since this mixture goes well not only with gypsum, but also with concrete and brick, it is only important to choose the right soil. For example, in order to glue drywall to a concrete base, you should take concrete contact, if there is gypsum or lime plaster, you can take a simple mixture deep penetration. Knauf adhesive is also suitable for working with insulating materials, such as extruded polystyrene foam or mini-board.
Perlfix can only be used for interior work. The composition is perfectly applied in both warm and cool rooms, but remember that the humidity level in the room should be above average. They can be used to glue not only drywall, but also matte gypsum tiles, polystyrene foam, mineral wool and polystyrene foam. Try to prevent any direct contact of water with the applied mixture. Do not apply glue to wet surfaces as this may damage adhesion.
The gypsum mounting mixture is sold as a ready-to-use dry product, so there is no need to use any additional ingredients.
In case of repair work under special conditions, the company produces products that differ from the base adhesive. Their composition allows for application to non-standard surfaces.
Specifications
Knauf Perlfix gypsum adhesive has excellent properties that correspond to the high quality of all the company's products. An increased service life, which is more than twenty years, is one of the consequences of this quality. The level of setting with concrete is 0.6 MPa. The presence of gypsum in the composition provides higher compressive strength of 10.9 MPa, and flexural strength of 3.4 MPa. Thanks to the thirty-minute setting time, it can be adjusted plasterboard sheets using a building level.
The mixture is available in packages weighing 15 and 30 kilograms, which is very convenient. It must be stored only in a dry place, since it contains gypsum. It is better to store the mixture on wooden pallets to promote optimal ventilation of the bags. This is also done to prevent the dry composition from becoming damp in conditions of high humidity. If the packaging is damaged, transfer the mixture into a single bag and then put it back into the bag. The shelf life of opened packaging is six months.
Advantages and disadvantages
Knauf Perlfix glue has both a lot of advantages and some disadvantages that should definitely be taken into account when purchasing. One of its main advantages is the environmental purity of the mixture, as well as the absence of a toxic odor, which makes it safe for health. When using glue, repair work is much faster and easier. Due to the absence of the need to use a hammer or hammer drill to drive in nails and screws, your repair will be absolutely silent and economical, since you will not have to spend money on additional tools. The composition is applied with a special ribbed spatula either immediately to the entire surface or in cakes.
The big advantage of this product is its versatility of use; it works great with different materials. Some craftsmen use it during minor putty work.
A huge advantage of the Knauf company itself is the presence of quality certificates for each of its products, which guarantees the high quality of all products, as well as careful control over different stages manufacturing.
However, the adhesive mixture also has several disadvantages., one of which is for a long time drying time of a week. This characteristic is associated with the components that make up the Knauf adhesive. After drying, the glue becomes very strong and provides reliable fastening for many years. During this process, that is, all seven days, the composition will increase the level of strength and, as it were, shrink the material. During this period, it is necessary to postpone any putty work to prevent the appearance of cracks.
Another feature of Perlfix is the short adjustment time for gypsum board or gypsum board blocks.
It is only ten minutes, and sometimes five. Glue is enough for short term loses its plasticity, which is why any changes in the laying of sheets, or the elimination of any bumps or pits that appear, must occur within a short period of time. After ten minutes, all your efforts will be in vain, as the mixture will no longer stretch. Despite such a rapid setting of the product, it will finally harden only after a week. The cost of this product is quite affordable and amounts to 300–350 rubles per bag.
How to use
Before starting to work with Knauf Perlfix glue, you should determine its consumption on the desired surface. According to the instructions, the consumption of the mounting compound for drywall is 5 kg per 1 m² when treating gypsum plasterboard and gypsum board surfaces; in the case of working with PGP, the consumption will be 1.5 kg per 1 m². However, in practice, the consumption of the product may be slightly different, it all depends on the experience of the specialist. Professionals who have already become fairly experienced in installing tongue-and-groove tiles (GGP) apply a little diluted glue to the surface so that after laying the sheet on, a little product comes out of the joint. Beginners in the construction industry do not like to save the mixture, thinking that it is bad, and apply a lot of glue, which is why a large amount of excess composition remains.
Here you should take into account the fact that the work is done with gypsum, and not with ordinary glue or cement. If in the second case you can use a spatula to remove all the excess and put it back into the container, then in the first case you cannot do this, because the mixture collected from the plaster will greatly reduce the lifespan of the glue. It will simply dry out right in the bucket in about fifteen minutes, which will result in overspending. But thanks to the ease of use, you can quickly and easily learn exactly how much to prepare the mixture and apply it to the base being treated.
The consumption of the mixture for gypsum plasterboard is more accurately calculated taking into account the unevenness or roughness of the base.
One of the main conditions when working with Perlfix glue is the level temperature regime, which should not be below +5 degrees. When working with a product weighing 30 kg, you will need 16 liters of water.
Work with Knauf Perlfix glue in the following order:
- first you need to clean the wall from dirt, dust and detachments;
- when working with gypsum plasterboard, the wall should be primed, preferably with a primer of the same brand as the plasterboard adhesive itself;
- carry out the process of mixing the mixture, usually this is done in a plastic container;
- the dry mixture is added to the water in a ratio of 1: 2;
- It is recommended to stir with a construction mixer; the result should be a mixture without lumps, similar in thickness to sour cream;
Among the variety of construction adhesive mixtures, Perlfix glue from the Knauf company stands out. The material responds most high requirements. Its main purpose is concrete, brick, etc. Despite the long drying time, this glue is one of the best in strength among analogues.
Product overview
Knauf is a company known for the production of construction products High Quality. "Perlfix" glue is a dry mixture based on gypsum, improved with polymer additives. To prepare the solution, simply dilute the powder with water. Designed for gluing sheets of plasterboard, foam plastic, polystyrene and gypsum boards to various substrates, including uneven ones. Bags of mixture of 15 or 30 kg are available for sale.
Specifications gypsum glue:
- Has increased adhesion.
- Eco-friendly and safe composition for humans.
- Intended for interior use only.
- Used at temperatures from +5 to +30 degrees.
- Can be used in unheated rooms.
- Resistant to moisture. Withstands high humidity, suitable for finishing kitchens and bathrooms.
- Suitable for small putty work.
- The finish has a long shelf life - several decades.
- Sets in 30 minutes, allows you to adjust the position finishing materials. Complete drying occurs after 7 days.
- The shelf life of the composition is 6 months.
- The average glue consumption per 1 m2 is 5 kg. Exact amount depends on the type and evenness of the surface.
Perlfix assembly adhesive is a great opportunity save on repairs. Due to its strength, there is no need to use additional fasteners. The adhesive joint retains its properties for many years.
Rules of application
To dilute gypsum glue, take an average of 15-16 liters of water per bag (30 kg), that is, in a ratio of approximately 1:2. Any mixture is suitable for preparing the mixture. plastic container. First, water is poured into it, and only then the glue is poured in in a thin continuous stream and stirred with a construction mixer until it has a homogeneous consistency, without lumps.
Wall preparation is required before applying glue. They need to be cleaned of dirt and particles. old decoration and prime, regardless of type. Best result installation will be using Knauf priming products.
Advice! The powder should be stored strictly in a dry and well-ventilated area, otherwise the glue will become damp due to the high gypsum content. If the packaging has been damaged, the mixture is poured into a whole bag and hermetically sealed.
Instructions for using ready-made Perlfix:
- The glue is spread on the wall with a rubber notched spatula pointwise at intervals of 3-4 cm.
- The glue is applied along the center line of the sheet in one row or in a checkerboard pattern. Recommended layer thickness is 2 cm.
- For thick finishing materials you will need two rows of glue, as well as additional processing along the perimeter.
- Ready to use within 30 minutes. The powder should be diluted in required quantity. Dilute old glue If you don’t use water, its quality becomes much worse.
- The plasterboard sheet is tightly attached to the wall and leveled. It is better to make the correction in the first 10 minutes after gluing.
- The finish should be left alone for 7 days until completely dry.
The use of Perlfix glue greatly facilitates installation work. This durable composition sets well, but allows for some time to adjust the position of the finish. Gypsum glue is an excellent alternative to screws and metal fasteners, which can damage the structure of drywall.
The Knauf product range is filled with a huge number of materials that you cannot do without. construction work. Knauf Perlfix adhesive mixture occupies one of the leading places in terms of demand among consumers.
Features and Benefits
Knauf Perlfix assembly adhesive is loose mixture on a gypsum basis with the addition of polymer substances, due to which the adhesion function with various types surfaces. Mainly used for facing works. Glues sheets of plasterboard, foam plastic or mineral wool. Manufacturer's warranty - several decades.
Knauf Perlfix mixture should be used indoors with standard humidity, you can use a slightly higher level, but using this glue in places where water can get in is prohibited. It also follows that during work there is no need to treat the working surface with water, otherwise the glue will not stick or will soon become unusable.
One of the advantages of Knauf Perlfix glue is the ease of mixing the dry mixture. Ready solution It should not turn out liquid, the ideal consistency resembles a paste-like mass.
Compound
Despite the high quality ratings of the product, the composition of Knauf Perlfix glue is not at all complicated. Initially, it is natural gypsum. Color shade the mixture can be different, for example, pink. This indicates the presence of polymers in the composition, but also of exclusively natural origin.
Knauf Perlfix glue has a certificate of conformity, as well as other documents confirming its high quality. Thanks to the main rule of the manufacturer ( minimum costs– maximum quality), all Knauf products, without exception, receive only positive reviews satisfied consumers.
Kinds
Each type of material produced by the Knauf brand is intended for individual repair work. Knauf Perlfix is ideally combined with PGP, but is mainly intended for gypsum boards and gypsum boards. In addition, Knauf Perlfix glue is used when installing tongue-and-groove slabs (blocks).
Concerning technical characteristics dry mixture, the composition has the following features:
- increased adhesion force, thanks to special polymers included in the composition;
- temperature range of use – no more than +30 and no less than +5 degrees;
- setting time – 30 minutes;
- moisture resistance;
- Possibility of use in unheated rooms;
- can be used in small jobs, for example, putty;
It is worth noting that the maximum comfortable temperature for Knauf Perlfix glue is 22-25 degrees, otherwise it will peel off and the work will have to be redone.
Release form
Knauf Perlfix glue is packaged and sold in special paper bags weighing 30 kg with several levels of protection. The shelf life of the dry mixture is six months.
Another question that often arises when purchasing dry mixtures in large packages is weight. For the sake of the desire to save money and make more profit, some manufacturers carry out fraud with underweight. Knauf is categorical in this regard. Each package is packaged in accordance with the requirements of GOST R 8.579-2001.
How to calculate?
When carrying out installation work, an important factor is the correct calculation of the amount of material consumed. According to standards, the calculation is made on 1 m2 of working area. Each manufacturer notes consumption data on the packaging. Per 1 m2 work surface 5 kg of dry mixture of Knauf Perlfix glue is used.
How to use it correctly?
The instructions for use, which are indicated on the original packaging, say that Knauf Perlfix glue must be diluted according to the formula 2: 1, that is, 30 kg of dry mixture will require 15 liters of water. The solution must be diluted in a large container, preferably made of plastic. First, water is poured out, and then glue is poured out little by little. In this case, it is necessary to immediately mix the mixture with a construction mixer.
At the end of the work, you need to check the resulting solution for the presence of lumps: if they are, you will have to beat until you get a homogeneous mass. The finished adhesive mass can be used. Working field should also be ready for application adhesive composition. The walls must be cleaned of old plaster and dirt. Definitely primed.
Next, spread the solution on the wall with a rubber spatula at intervals of 3-4 cm. facing material lay out Knauf Perlfix with dots in a checkerboard pattern. The layer thickness for better adhesion should be 2 cm. Glue the sheet to the wall.
Installation is quick and very convenient. The time to adjust the cladding is no more than 10 minutes.
Consumer Opinion
Judging by the large number of reviews, Knauf Perlfix adhesive occupies a high position among analogues in the global building materials market.
Users highlight the following advantages of using Perlfix dry mix.
- There are no difficulties in work.
- At installation work there is no need to provide additional fasteners for the cladding. The glue holds the sheets tightly and securely.
- The composition is universal, it can be used not only as glue, but also as putty. For example, after installing drywall, seal the seams between the sheets.
- Perlfix glue has an optimal price that is affordable to any consumer.
Despite the ideal quality, environmental friendliness of the composition and its versatility, the Perlfix dry mixture has one unpleasant drawback. The complete drying time for the applied solution is 7 days. It is advisable not to expose the lined surface to any impact during this time.
First time studying repair work, every novice builder faces many problems and questions. And it’s not always possible to do the job efficiently the first time.
- Before starting work, you need to prime the wall. The choice of primer depends on the base material. After which you need to wait until it dries completely, while making sure that no particles of dust or fine dirt get on the treated wall.
- To prevent ready-to-use glue from drying out quickly, it should be diluted cold water. The dilution container must be clean.
- For the most durable fixation, the solution must be applied pointwise, starting from the center and then along the perimeter of the sheet.
- When installing tongue-and-groove slabs, do not use too thick adhesive solution. It is more convenient to make a slightly liquid consistency. After fixing the slab, excess adhesive mass at the joints will be minimal.
Surface preparation
To reduce the absorbency of the base and prevent uneven setting of the plaster mortar, gypsum and cement-lime plasters are treated with a primer diluted with water in a ratio of 1:3 or primer. Masonry made of gas, foam concrete blocks, ceramic or sand-lime brick primed with water diluted in a ratio of 1:2 or. Dense surfaces that do not absorb moisture, such as concrete, are treated with KNAUF-Betokontakt primer to improve the adhesion (adhesion) of the mounting mixture solution to the wall surface. After application, allow the primer to dry. Avoid dusting the primed surface. Key properties
Quick leveling of wall surfaces using KNAUF sheets without installation load-bearing frame. - The use of KNAUF-Perlfix glue allows you to reduce the loss of room space when cladding walls. - The material is made from environmentally friendly natural mineral (gypsum) and does not contain substances harmful to human health. Consumption
Consumption of Knauf-Perlfix mounting adhesive - Gluing gypsum boards: 5 kg/m2
- Installation of tongue-and-groove slabs (GGP): 1.5 - 2.0 kg/m2
Execution of work
Preparation of mounting solution
Pour clean water into the plastic tank. cold water at the rate of 15–16 liters per bag (30 kg), add the KNAUF-Perlfix dry mixture and mix with a construction mixer until a homogeneous, lump-free mass is obtained. If necessary, add water or dry mixture and mix again. The water temperature for mixing the dry mixture should be in the range from +5°C to +30°C. More warm water impairs water holding capacity adhesive solution and may reduce its adhesive ability. It is not allowed to introduce other components into the solution! Duration of work with the mounting mixture solution is ~30 minutes. Contaminated containers and tools will shorten the life of the material. Gluing
Apply the KNAUF-Perlfix mounting mixture solution in portions (one trowel) along the sheet in one row in the center with an interval of 35 cm (for KNAUF sheets with a thickness of 9.5 and 10 mm - in two rows) and along the perimeter with a minimum interval. Press the panel to be installed tightly to the base and, with light blows, through the rail, align it in a single plane of the cladding. The position of the KNAUF hypocardboard sheet can be adjusted within 10 minutes after applying the adhesive solution. If the surface of the base for cladding has large unevenness (more than 20 mm), then first, using a KNAUF-Perlfix solution and strips of KNAUF plasterboard sheets about 10 cm wide, form a mounting plane. When attaching mineral wool slabs, it is necessary to first rub the entire surface of the slab with a trowel. thin layer KNAUF-Perlfix solution. When applying the KNAUF-Perlfix solution to the surface of KNAUF sheets and insulating materials, you must not add water or dry mixture to the solution! Upon completion of work, tools must be immediately washed with water. Installation and sealing of KNAUF-gypsum board (PGP) joints
When installing tongue-and-groove KNAUF gypsum boards, KNAUF-Perlfix solution is applied to the groove of the bottom row of plates and to the vertical end groove. The solution that comes out is immediately removed and used in the future. Upon completion of installation of the partition, any uneven surfaces are sanded or puttied. The modern building materials market is very diverse. One of the leaders in its segment is Perlfix plasterboard adhesive (KNAUF PerlFix). Let's look at its characteristics and application features in more detail.
Purpose, properties and characteristics of Perflix glue
Perlfix plasterboard adhesive is a dry mixture based on gypsum with polymer additives that provide high adhesion during installation. With its help, you can glue all kinds of gypsum combined panels (GCP), plasterboard sheets (GKL), materials intended for heat and sound insulation of walls (mineral wool and expanded polystyrene slabs) onto an uneven surface of brick, plastered, concrete, foam concrete wall bases. Knauf drywall adhesive is not suitable low temperatures, therefore it is used exclusively for finishing internal surfaces rooms with normal and high levels of humidity.
Knauf Perlfix plasterboard adhesive is available in paper packages of 15 and 30 kg.
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Technical characteristics of KNAUF Perlfix plasterboard adhesive:
Advantages and disadvantages
Knauf Perlfix drywall adhesive has a huge number of advantages compared to other similar products. One of the components of the popularity of this mixture is that it is easy to work with. Thanks to excellent qualities Using glue, leveling the surface of the walls is done quite quickly and does not require installation of a supporting frame. Using Perlfix will help you save space when covering your walls.
Another advantage of the glue is its versatility. With its help you can perform small work on puttying walls. It is light and highly flexible. Perlfix is made from environmentally friendly pure materials that are not harmful to health. Another advantage of Perlfix is its price; this glue has an optimal price-quality ratio.
The disadvantages of Knauf Perlfix include the long time required for the glue to dry completely. It is not recommended to touch the lining planted with Perlfix for 7 days. The problem lies in the composition of the glue, but when the drying time comes to an end and it hardens, a strong and reliable seam is formed.
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How to work with it
When starting to work with Perlfix, it is necessary to determine the volume of work, the area of the working surface and how much material will be consumed for a given area. The unevenness of the walls of the room and the thickness of the material applied will determine the consumption of Perlfix plasterboard adhesive.
Installation of drywall on Perlfix takes place in several steps:
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Storage conditions
Storing Knauf drywall adhesive will not be difficult, which will allow you to use the rest of the material in the future. Knauf dry mixture must be stored in bags on wooden pallets in dry rooms. Undamaged or hermetically sealed bags have a shelf life of 6 months.
After reviewing the characteristics of Perlfix glue, we can conclude that purchasing this mixture is a profitable solution that will save your time and budget.
