Moisture-resistant drywall: price and sheet size

The appearance in the arsenal of building materials of drywall significantly facilitated the work on rough finishing of premises, the erection of structures and partitions, expanded design capabilities. And the addition of a hydrophobic component to the gypsum layer ensured water resistance and allowed bringing the use of GCR to a new level. Moisture-resistant gypsum plasterboard is successfully used in conditions of high humidity in the repair of bathrooms, kitchens, basements, balconies and loggias.

Distinctive features of GKLV

Moisture-resistant drywall (GKLV) is a sheet material consisting of two layers of special cardboard and a gypsum core.

The cladding protects the fragile internal filler from crumbling. The coating treated with antibacterial and hydrophobic compounds is suitable for residential premises and is the basis for subsequent finishing.

For the manufacture of the inner layer, viscous gypsum with reinforcing and water-repellent additives is used. The ductility of the resulting composition provides the GKL panels with increased flexibility, which allows you to mount structures of any shape.

The edge of each GKLV plate is rolled with cardboard of the front layer. The way of sealing joints between sheets during installation depends on the edge profile.

The edges of drywall panels are of the following types:

1. PC - direct longitudinal.
2. UK - thinned longitudinal.
3. PLC - longitudinal semicircular on the front side.
4. PLUK - semicircular thinned universal longitudinal.
5. ZK - rounded longitudinal.

 Note! Visually distinguish waterproof plasterboard from standard panels can be on the green color of the front cardboard layer.

Important! When buying, you need to evaluate the appearance (uniformity and color saturation), as well as the integrity (presence of breaks and cracks) of the sheets.

Characteristics of a moisture resistant variety of drywall

The material has a reduced water absorption compared to conventional drywall: this is significant 90% lower.

Parameters of standard GKLV plates:

• length - 2000–4000 mm;
• width - 600 or 1200 mm;
• thickness - 6.5, 8, 9.5, 12.5, 14, 16, 18, 24 mm;
• the average weight of the sheet is 25 kg.

Thanks to the hydrophobic additives in the core, the plasticity of the gypsum layer increases, which makes it more convenient to work with curved surfaces.

Waterproof gypsum board is characterized by low flammability, practically does not form smoke and does not emit toxic substances. In high-quality plates, starch acts as an adhesive composition that provides adhesion of the core and the cardboard shell.

Fire technical specifications for hazard classes:

• flammability - G1 (low combustible material);
• flammability - B2 (moderately flammable);
• smoke formation - D1 (small smoke-forming ability);
• toxicity - T1 (low hazard).

All technical characteristics of GCR - here.

Marking

Each sheet of finishing material must be marked on the wrong side, the symbols of the GKLV are applied in blue and contain the following information:

1. Manufacturer.
2. Alphabetic abbreviation of the plate variety.
3. GKL edge profile type.
4. Dimensions in mm.
5. GOST designation.

Marking of gypsum plasterboard moisture-resistant sheet with a thinned edge 2500 mm long, 1200 mm wide, 12.5 mm thick manufactured by KNAUF looks like this:

Knauf sheet GKLV-UK 12.5 x 1200 x 2500 GOST 6266-97

Scope of application

Focusing on the technical characteristics of the moisture-resistant type of drywall, it can be used everywhere, without being tied to the humidity level of the room. But the price of such a sheet is slightly higher than that of a standard plate. Therefore, with a large finishing area, the difference in price can be significant. It turns out that it is impractical to use such material “without looking”, it is worthwhile to more carefully approach the choice of GCR for each room, depending on its purpose.
GKLV is indispensable for finishing bathrooms, kitchens, basements, garages and other household premises. Provides a wide range of repair work:

• alignment of walls and ceilings;
• partitioning, arches and suspended structures any size and complexity;
• creating embedded niches or boxes for plumbing equipment.

Features of installation and decoration

GKL installation is carried out in two ways: glue and frame.

• Fixing drywall to glue It is used when leveling the working surfaces of walls. In this case, glue mortar or putty is applied to the underside of the sheet, then the panels are firmly fixed.

• For leveling walls with large elevations, as well as for the device of various designs, it is used wireframe method. When carrying out such work, the frame is first assembled from galvanized metal profiles or the crate is installed on the walls / ceiling. Then, with the help of self-tapping screws, the resulting structures are faced with GKVL.

After installation, the joints obtained between the sheets are sealed with putty using a reinforcing tape.

Note! During operation, it is necessary to ensure that the chamfered part of the edge (lighter) remains outside.

Despite the fact that GKLV has a high degree of moisture resistance, to preserve the material in good condition, extending the service life and maintaining functionality need additional waterproofing. Plasterboard plates can be coated with moisture-resistant paint, pasted with vinyl wallpaper or tiled with ceramic tiles. Thus, the material will be protected from direct contact with the liquid. It is also necessary to ensure the quality functioning of the ventilation system.

Important! Before starting work on the installation of the GKLV plate, it is necessary to withstand at least a day in the finished room for adaptation.

GKLV cost

Drywall is an inexpensive segment of finishing materials, the price range of which is quite wide. The cost depends on the manufacturer, size and weight, type of edge and chemical composition of the plate (how much hydrophobic component is contained in the gypsum).

For comparison, consider prices in Moscow:

• moisture resistant board from one of the leaders in the production of building materials - KNAUF - will cost from 99 to 465 rubles .;
• GKLV sheet of the manufacturer Volma - from 96 to 370 rubles;
• GKLV of the leading global manufacturer Gyproc - from 78 to 410 rubles.

Moisture-resistant drywall is well-known among craftsmen-finishers due to its variety and functionality, as well as ease and convenience when cutting, cutting and installation.