gypsum plasterboard

Drywall - a relatively new building material, which appeared in the late XIX century.With ease of use, a wide range of different sizes and types, the material commonly used in construction.GCR list, produced by different manufacturers, despite producing its various trademarks and brands are easily recognizable: it is a gypsum board of different size sheets, cardboard pasted outside.The composition of gypsum board is extremely simple: building plaster - 93%, a standard cardboard - 6%, various builders - 1%.

types drywall intended

There are several types of manufactured gypsum board, differing in their basic physical parameters.

• GCR .Most mass-produced conventional drywall manufacturers, applied for premises with standard requirements imposed on consumers to humidity and temperature conditions.It is easily distinguished by the colors of the top layer of cardboard: a drywall painted in gray, all the marking labels on the surface of a sheet made blue.
• gypsum plasterboard .For rooms with high humidity rates produce gisokartonnye sheets pasted green cardboard with water-resistant additives and blue label.
• GKLO .In areas with a higher than normal temperature indicators used, produced by plants, fire-resistant drywall.It is covered with cardboard gray or red, and all the technological inscriptions on its surface made of red paint.
• GKLVO .For areas with excessive demands for fire resistance, moisture (eg, sauna), manufacturers produce flame-retardant and water-resistant plasterboard green color with red markings.

Sizes sheets GCR

For all queries builders, plants produce a whole range of sizes of all types of plasterboard.The thickness of the plasterboard sheets can vary widely:

• for the manufacture of arch designs available GCR 6.5 mm thick;
• for ceiling mounting, various baskets recommended sheets with thicknesses of 8;9.5 mm;
• for different wall constructions made of sheet thickness of 12.5;14;16;18;20;24 mm.

Characteristics edge sheets GCR

most popular and widely used, the thickness of the sheets GCR is 6.5;9.5;12.5 mm.In addition, commercially available sheets themselves differ edge region, which is important when the device joints between sheets.The edges can be straight, rounded, subtle on the one hand, the semi-circular or semi-circular and subtle on the front surface, cut at an angle of 45 degrees.

Dimension and weight parameters

manufacturers offer consumers a variety of widths and lengths of sheets GCR.Typically, the width of gypsum board is 600 or 1200 mm and the length can vary from 2000 to 4000 mm (50 mm serialization).

Weight plasterboard sheets can differ greatly: it depends directly on the thickness and type of sheet.The weighting parameters drywall calculated using the formula: weight of 1 m2 of KhS (K - figure for the ordinary and moisture-resistant drywall is not more than 1 kg per mm of thickness to fire resistant and vlagoognestoykogo ranges from 0.8 to 1,06; S - score ofmm in thickness).

Specifications drywall

GOST 6266-97 normalizes the following properties: plasterboard:

• strength of gypsum plasterboard at breaking load: limit value for the strength of the sheet 12.5 mm - 322 N lengthwise;105 N in the transverse direction;
• tolerances on the geometric dimensions and the number of possible defects, according to which the plasterboard is a Class A or B;
• GCR sag should not exceed 0.8 to 1.0 mm.

Plasterboard sheets of all types are:

• the group flammability G1 (according to GOST 30244);
• to the group B3 flammability (according to GOST 30402);
• the group D1 smoke-forming ability (according to GOST 12.1.044);
• the group T1 toxicity (according to GOST 12.1.044).

Benefits

wide range of types and varieties produced material allowed him to take a leading position in the construction market.Using together with various sheets of plasterboard a whole range of products (pieces of wood, galvanized profile, different types shpaklёvok and adhesives, reinforcing mesh and screws, plugs), you can perform an impressive amount of finishing work, arrange false ceilings, falshsteny, partitions of any complexity, embodying the most creativedesign solutions.

Because of its environmental friendliness, a large number of different sizes and types, ease of use, plasterboard confidently occupied its niche among the finishing materials.

Disadvantages

Thus, having a great number of advantages, plasterboard has certain drawbacks that limit its use.In particular, it is not strong enough to point load, so is not used as supporting structures.In addition, it is contraindicated in constant contact with water, or open flame.Also, in the event of deformation or damage to the sheets of drywall, repair it is problematic that, however, is offset by the simplicity of replacing the damaged sheets.

Whatever it was, drywall - one of the few modern materials, the study of photo, video installation which, as well as reviews, allows even a novice to arrange a simple barrier or wall to align.

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