Technical characteristics of Perlfix assembly glue, instructions for use and consumption
Many home craftsmen are faced with drywall. They line the walls, make partitions. It is installed on a metal profile. But you can just paste it. This is where the fun begins: how is drywall glued? Plasterboards are glued with Perlfix glue. It is a product of the international manufacturing company Knauf. Today it is the best thing that is produced for fixing drywall.
Features and description
Perlfix is a plaster-based assembly glue. It is a product of the international industrial company Knauf. The company was founded in Germany in 1932. Brothers Alfons and Kard Knauf, who lived in northern Bavaria, were fascinated by its qualities when they became familiar with gypsum. They dreamed of creating ideal building materials using it.
Today Knauf Gips KG is an international company with production facilities all over the world. Manufacturing processes are still based on gypsum. The company's technologists develop unique building materials using it.
Perlfix firmly fixes finishing materials. It does not need additional fasteners.The guaranteed service life of the coating glued to it is several decades. Perlfix ready-to-use mortar can be used over a wide temperature range. The adhesive is used in houses with average humidity. The fixing period is one week. The seams should be rubbed. Do this once the glue is completely set. In sealed packaging, Perlfix retains its qualities for 6 months.
The adhesive mass is non-toxic and hypoallergenic. There are no harmful impurities in the composition. The glue is not harmful to human health. To properly fix the finishing material, the adhesive solution is applied in a layer 2 cm thick. The glue is sold in the form of a ready-to-use dry mix. It does not need hardeners. It is simply mixed with cold water. An important advantage of using assembly glue from the Knauf company is simplicity. It is stirred with water, bringing it to a pasty state. The finished batch should be used within half an hour.
Perlfix cannot be used in rooms with high humidity. Direct contact with water is not permitted. A coating applied with Perlfix glue will last for many years, provided the work surface is properly prepared. Perlfix has good adhesion to concrete substrates. The increased plaster content ensures the adhesive's strength in compression and bending.
Appointment
The direct purpose of Knauf glue is interior finishing work. The area of application is rooms with low and medium humidity. The purpose of the adhesive is to fix the finishing materials. They are glued to:
- drywall,
- polystyrene,
- expanded polystyrene,
- mineral wool,
- gypsum boards,
- plaster blocks,
- tongue and groove plates.
Plaster materials should have a matte base.The use of glue is allowed in warm, unheated rooms.
Composition and specifications
The glue is based on natural plaster. Polymer materials are added to it, which determine the color of the mixture. Coloring in no way alters the assembly qualities of the mixture. Glue consumption per 1 m2 does not depend on the color. The adhesive has certificates confirming high quality standards. Knauf Perlfix plaster glue has the following technical characteristics:
- Increased adhesion - a high degree of adhesion of various materials.
- Environmentally friendly and hypoallergenic. There is not a single toxic substance among the ingredients.
- The sole purpose is interior decoration of residential and industrial premises.
- It is used in the temperature range: + 5-30 degrees Celsius.
- It is possible to use small cracks and potholes for filling.
- The shelf life of the finish is several decades.
- Allows adjustment of fixed materials. The composition is elastic, gives stretch.
- Setting time is 10 minutes.
- The full fixation period is 7 days.
- Neutral to mechanical stress. Resistant to static charges, vibrations and shocks.
When using glue, no additional fastening with other fasteners is required. The adhesive composition retains its qualities for many years.
Advantages and disadvantages of using
Perlfix glue has many advantages over other bonding materials:
- It's easy to work with him.
- Editing is silent.
- Working with glue does not require any special tools. The composition is applied with a ribbed spatula.
- Compared to other materials, Perlfix is a fairly budget option.
- Finishing is easier and faster than using a profile.
- It is possible to align and reinforce the walls along the way.
- Suitable for small putty jobs.
Perlfix glue has a number of disadvantages:
- the duration of fixation - you need to wait a week for complete drying;
- the inability to continue working until completely dry;
- limited correction time.
If the glue has not had time to rise, the work cannot be continued. This will lead to cracks. The master has no more than 10 minutes to lay the blocks and slabs. In addition, the glue hardens and loses its elasticity.
It is unacceptable to use glue on damp walls. Do not allow direct moisture to come into contact with bonded materials.
Release form
Perlfix glue is packaged in sachets. Paper bags have a special impregnation that protects the bulk mixture from moisture. Bag weight - 30 kg. Knauf manufacturers strictly monitor the weight of the bags. Their packaging corresponds to GOST 8.579-2001.
Two types of glue are on sale: Perlfix and Perlfix GV. Both products are intended for indoor use and do not tolerate high humidity. But their adhesion to drywall is different. Perlfix GV is best suited for drywall applications.
How to calculate consumption
Each master is interested in the question: how much glue is needed. This is justified. The lack of equipment threatens to disrupt the work. The large balance is wasted funds. With Perlfix glue, everything is simple. On the packaging, the manufacturer indicated the average consumption. It is equal to 5 kg per 1 m2 work surface. It remains to make simple calculations:
- Determine the area. To do this, multiply the length by the width.
- The result is multiplied by 5.The exact amount of glue is obtained in kilograms.
- Divide the number of kilograms by 30. This is exactly the quantity packed in a bag. The result is the number of bags required.
If in the final calculations a fractional number is obtained, it is rounded up.
How to use correctly
Any finishing work requires prior preparation of the walls. They are cleaned of dirt and remnants of the old finish. The surface must be absolutely clean. Then the walls are primed. It is necessary to use a primer for glue. The choice should fall on the products of the Knauf company. Its building materials are made for each other. Everything is taken into account in their composition. It is always better to choose a primer and an adhesive from the same manufacturer. Knauf primers are sold in plastic buckets. They are ready to eat. The primer is applied to the wall with a roller or with a brush. It is allowed to dry out. Then they start working with glue.
The instructions will help dilute the powder and turn it into a paste. A bag of glue will require 15-16 liters of clean cold water. It is poured into a plastic bucket. Then the glue powder is poured into the container in a thin stream. Everything is carefully mixed with a site mixer until a homogeneous pasty mass is obtained.Do not allow lumps to form. This significantly reduces the quality of work..
First, the glue is applied to the wall. This is done with a rubber notched trowel. The composition is evenly distributed with an interval of 3-4 cm, then the glue is applied to the center of the panel. You can do this in a checkerboard pattern. It is necessary to lay it in a layer of 2 cm. If the panel is massive, the glue is applied in two layers. Further, the slab is processed along the perimeter.The powder should be diluted in small quantities, depending on the speed of work. Diluted glue can only work 30 minutes. Then he starts to get up.
Further dilution with water will reduce bond strength.
Drywall is firmly applied to the wall. The foreman has a few minutes to line up the style. Then the next plate is placed. The finished work is left to dry for a week.
Storage conditions
Store glue packets in a dry place. The best option is to place them on wooden pallets. This will provide ventilation. If suddenly the humidity in the room rises, this will help maintain the working qualities of the composition. If the industrial packaging is damaged, it must be put in a new bag and sealed. Do the same with the glue residue. The shelf life of the adhesive powder in a sealed package is six months.
Professional tips and tricks
Above is general information about Perlfix Assembly Adhesive. But you have to work in individual conditions. One glues the plasterboard, the other glues the foam, the third glues the blocks. And the work surface is different for everyone. Craftsmen who have encountered Perlfix glue share their observations and give recommendations:
- After priming the walls and letting them dry, make sure they don't get dust and dirt. This will reduce the quality of work.
- The container for diluting the glue must be thoroughly rinsed with hot water before use. But the glue should only be diluted when cold. The colder the water, the longer the composition does not rise.
- The solution should be applied punctually. It can be compared to large slabs of glue placed on a stove.Application starts from the center, moving evenly to the edges. The entire perimeter must be filled.
- When working with tongue and groove plates, dilute the glue a little thinner. With this dilution, the residues of glue at the joints of the plates will be minimal.
- Excess glue removed should be folded separately and discarded. It cannot be loosened. This will spoil the quality of the composition. It will thicken faster.
- When installing drywall, the adhesive can be applied with a notched trowel along the entire length of the board. The same is done with the wall. Layer thickness - 1 cm on the wall and the same on the panel. This method of applying the adhesive will help align the boards better. When pressed, the mixture will fill all the cavities.
- When buying Perlfix mounting adhesive from Knauf, you should check the certificates. Many counterfeits have appeared on the market, which often differ in quality.
- The optimum temperature range for working with glue is 20-25 degrees Celsius. It is quite consistent with the temperature inside a residential or office space.
Subject to the rules of the instructions and advice of the masters, laying drywall or other facing materials will not be difficult.