Have you ever thought that a plasterboard that is customary for interior finishing works has an analogue that considerably exceeds it in terms of technical characteristics and is so simple in operation? This is a gypsum-fiber sheet, or abbreviated GVL.
This finishing material is also made in the form of sheets, but unlike gypsum board, it does not have a shell, but is completely homogeneous in structure. GWL is produced by pressing a mixture of building gypsum and loose cellulose fibers( 15-20%), obtained mainly from waste paper. Fibers play the role of reinforcing elements, due to which the strength of gypsum fiber is several times higher than the strength of plasterboard( GCR).Thus, we can talk about the environmental safety of this material and the ability to apply it for all types of interior decoration inside living quarters.
Features and Benefits GVL
In addition to being environmentally friendly, GWL has a number of other characteristics that incline the scales towards this material:
- High viscosity and strength( 1250 kg / m³) GVL allow nails to be driven into them and screwed without a dowel, and sheets can be processedThe same tools as the tree, because it does not crumble.
- The low coefficient of thermal conductivity makes GVL an excellent material for thermal insulation of premises, like plasterboard, it is always warm to the touch.
- Sound insulation GVL about 35-40 dB, depending on the thickness.
- Thanks to its ability to withstand fire, gypsum-fiber sheets can be used for fire protection of wooden structures and utilities.
- The light weight of the GVL does not create an additional load on the bearing elements of the building and allows carrying out sheet transfer and installation of structures alone.
- Ease of processing - no special tools are required to work with the material, and there is little waste.
- GVL is flexible( bending strength 5.5 MPa, twice higher than for GCR) and can be used for construction of various complex structures: arches, niches, elements of suspended ceilings.
- Frost resistance - according to manufacturers, gypsum-fiber sheets can withstand up to 15 cycles of freezing and thawing until cracks and deformations appear. Thus, GVL can be used for finishing unheated buildings, for example summer cottages.
- High hygroscopicity of GBL affects the level of humidity in the room: if it is raised, the sheets absorb water to give it off in dry air.
- Quality sheets should be carefully ground and covered with a means to prevent chalking and excessive accumulation of moisture.
GVL is an excellent replacement for gypsum plasterboard, if the material requires additional strength and the ability to withstand point loads. It is somewhat more expensive than the GCR, but this is perhaps an insignificant disadvantage, given the higher wear resistance.
Species
Varieties GVL only two - standard and moisture resistant.
- The standard GVL is optimal for most indoor applications in dry rooms, both residential and industrial, with normal temperature conditions.
- Waterproof sheets ( GVLV) impregnated with a hydrophobic solution and can be used in wet rooms - kitchens, bathrooms, cellars and masards.
Gypsum fiber sheets are divided into sheets with a straight edge and with a seam edge. The standard size for most manufacturers is 250 * 120 * 1cm, there are also small size sheets 150 × 120 × 1cm. Elements of the floor are more than 2 cm thick.
Application of
Technical characteristics of GVL allow to use them in a wide range of construction and finishing works. The most common application - the cladding of walls, ceilings, door and window openings, both for the purpose of alignment and concealment of communications, and for fire protection.
Gypsum fiber sheets can also be used to create internal partitions, as increased strength allows you to hold the weight of doors and other attachments. GVL can also be used as a substrate for flooring for reinforced concrete and wooden floors, although in this case it is better to prefer moisture-resistant sheets. From the top you can lay any material: linoleum, laminate, parquet, tile. The use of GWL significantly accelerates flooring in comparison with "wet" methods, because it is not necessary to wait for complete drying for several weeks, in comparison with OSB, often used for the same purposes, GVL does not contain harmful resins and formaldehydes.
What to consider when choosing
Buying GVL, first of all, you need to choose sheets from well-proven manufacturers. The least scuffles are collected by GVL from the company KNAUF, the products of Russian manufacturers, though cheaper, but can be dusted. When purchasing moisture-resistant gypsum boards, attention should be paid to the marking of each sheet or the entire package, if a large amount of material is purchased, since in appearance they may not differ from the usual ones.
