FACING WALL GKL ON GLUE ("DRY PLASTER")

With this method of mounting drywall, a sheet of drywall is attached to the base wall with glue, so this
cladding plasterboard is also called "dry plaster." All types of facings are made with vertical mounting sheets.
Do not use "dry plaster" on ceilings and inclined planes.
Consider the execution of wall cladding with plasterboard on a sample of the Knauf complete system.

There are three options for installing drywall:

• For ideal bases (reinforced concrete panels, large blocks, plaster) with a deviation from the plane up to 4 mm;
• Uneven bases (walls made of bricks, small blocks or sawn natural stone) with a deviation from the plane up to 20 mm;
• Uneven bases (masonry, stone, etc.) with a deviation from the plane up to 40 mm;

The way of facing is chosen depending on the convexity of the walls.

Technology work and the sequence of installation of drywall when facing walls on glue.

Installation of drywall should be performed during the period of finishing works (in winter with attached heating), before the installation of finishing floors, in the criteria of dry and normal humidity conditions. The temperature in the room does not have to be below 10 ° C.
Before the start of drywall work, electrical and sanitary systems should be installed at the level of risers. Liners can be made in the manufacture of finishes. It is also required to complete the processes associated with the release of a huge amount of water into the room volume (for example, cement-sand screed).
Foreign objects are removed from the wall to be veneered: dust and dirt, oil stains, etc. When facing with the help of mounting drywall on glue, the walls must be dry. On the prepared surface should first apply a primer. Smooth and moisture-absorbing walls are treated with a Knauf Betokontakt primer to improve adhesion. Hygroscopic (i.e., Moisture Absorbing) surfaces are treated with a Knauf Tiefengrund, Knauf Grundirmittel primer in order to reduce their absorption of moisture from the glue and increase adhesion. The primer should be completely dry. It is necessary to exclude subsequently hit of dust on a surface.
Then determine the condition of the main surfaces, create a measurement of the unevenness of the surfaces (hang walls) and choose the appropriate method of lining. Perform the marking of the design position of drywall on the floor with a folding meter or tape measure and break the reference line with a cord-breaking device, on which the position of the gypsum sheets is marked. Transfer the marking with a plumb line to the ceiling and base wall.
After that prepare sheets of drywall for cladding. In places of junction to the side walls, gypsum boards are chamfered for subsequent puttying; with all this, the edge of the sheet is also, as necessary, adjusted to the convexity of the inner corner of the wall. Cut openings for switches, sockets, and so on. P. Cutting is required taking into account the fact that to compensate for its elongations with increasing temperature and humidity inside the room, gaps should be left: between the gypsum board and the floor - 10-15 mm. It is also recommended to prepare in advance the lining of wood or drywall to provide a gap between the floor and gypsum board. These gaps after drying the glue and removing the linings are sealed with strips of insulating material and sealant (for example, Knauf Acryl, Knauf Sanitary-Silicone), and finally cover with plinth.
Plasterboard with a thickness of 12.5 mm is used for plasterboard walls. The length of the used GKL must comply with the height of the surface to be veneered. The formation of horizontal joints of drywall sheets is unacceptable. Adhesive marking is described for sheets with a width of 1200 mm.
When finishing an exemplary flat surface, Knauf Fugenfüller putty is used as an adhesive.
A sheet of drywall is laid on the wall with the downside down on the lining of the bars, boards, or at least some other material at hand. Dilute with water the necessary amount of glue according to the instructions.
The solution is applied with a notched trowel 120-140 mm wide with a tooth size of 3-6 mm in continuous longitudinal stripes along the perimeter and along the middle (at a distance of about 600 mm from the vertical side of the sheet). In the case of laying tiles on drywall, for reliability in the middle, two strips are applied through 400 mm. In places where suspended equipment will be mounted, glue is applied to the entire surface.
Then the sheet with a layer of glue is lifted, set on the lining and glued to the wall. The position of the sheet is adjusted using a rack or metrost level. The sheet is pressed gently against the wall with the help of a rule (a wooden bar with a stubby butt), trying not to spoil the layer of cardboard lining of the sheet.
After installing all the sheets of drywall and the full curing of the adhesive (the curing time is indicated on the bags of the manufacturers), the joints are sealed using a Knauf Fugenfüller spackling compound and a reinforcing tape. The gaps at the floor and ceiling close up, as described above.
For gluing plasterboard sheets on a wall with irregularities of up to 20 mm, use of gypsum-based "Knauf Perlfiks Ansetgips".
Sheet drywall laid on the lining face down. Dilute with water the required amount of glue according to the instructions. Glue is applied in small groups along the panels with an interval of 30-35 mm, and along the perimeter - with the smallest gap. The minimum distance to its edges is 50 mm.
After applying the glue sheet is lifted, set the lining and pressed to the wall. Lightly tapping according to the rule, pressed against the sheet with a rubber mallet, it is leveled and brought into a strictly upright position. Monitoring the correct installation of gypsum in the design position is carried out level or metrostat.
After all the sheets are installed and the glue is completely cured (the hardening time is indicated on the bags of the manufacturers), the joints are sealed using Knauf Fugenfüller spackling compound and reinforcing tape. The gaps at the floor and ceiling close up, as described above.
For gluing sheets on walls with irregularities, exceeding 20 mm, use the mounting glue "Knauf Perlfiks Ansetgips" and the putty "Knauf Fugen-Fuller".
First you need to form a flat plane. GKL cut strips of width 100 (120) mm and put on them knots of construction adhesive "Knauf Perlfiks". The strips are glued to the wall around the perimeter of the wall, as well as at the junction of the sheets (so that the joint space falls exactly in the middle of the strip) and additionally one or two strips in the middle of the sheets. The bands are pressed tightly and with the help of the rack level they are put in one plane. When attaching these strips, it is imperative to use a plumb bob, otherwise there will be another curved wall. After the glue has completely cured, the installation of drywall sheets begins. Sheets are installed in the same way as in the case of a flat surface - on the Knauf Fugen-Fuller putty. Then close up the seams between the sheets and the gaps between the sheets and the floor.
If necessary, the device heat and heat insulation on the base wall at first stick a sheet of polystyrene foam and wait for the solution to set completely. After that, put the plasterboard sheets as it was described for a flat surface.
In the course of work on the execution of C611 cladding, you should strive to install in order not less than two, and preferably at least three sheets of drywall on a solution from the 1st batch. The adjustment of the installation of these FCL is recommended at the same time.
The adhesives of Knauf company mentioned in the text have analogues. If necessary, they can be replaced with glues from other manufacturers.