Construction services

Elements of a dry screed for the floor

For interior finishing in old and new buildings, especially when laying carpet coverings, For PVC and parquet, there is almost always a need for a plate-like material with high compressive strength and a smooth surface, which can be used everywhere and can be easily processed.

A person skilled in the art speaks of dry substrates or of elements “dry screed”. The most famous elements of dry screed are chipboards, soft fiberboard and plasterboard. When laying these plate elements on flat pads, ceiling joists or floor joists, it is recommended to lay insulation materials at the same time. All materials to avoid building damage, the floors used for the construction should also be compatible in terms of physical and construction. Therefore, for a project type logo, careful initial information is very important and useful, advice and choice.

Particle boards
Dry chipboard substrates are excellent for laying carpet, PVC and parquet. They give, applied appropriately, significant improvement in insulation against the sound of footsteps, high load capacity, as well as flat, dry and resistant surfaces.

For interior finishing, the so-called. flat pressed plates, in which the wood chips are situated parallel to the plane of the board.

The following types of boards are distinguished according to the type of gluing and the possible addition of wood preservatives:

• V 20. The glued boards are not resistant to weather conditions and cannot withstand higher air humidity.

• V 100. These flat pressed plates are highly time resistant, higher air humidity. After getting wet, they must be dried again.

• V 100 G. These boards are resistant to high air humidity and are protected with wood fungicides against attack by fungi.. They are used there,
where long term is to be reckoned with, high air humidity, and therefore with the moisture of the boards.

Particle boards are produced using synthetic resin binders. In order to reduce and avoid health hazards and formaldehyde inhalation, boards are divided into three different emission classes according to special guidelines ha:

• Grade plates “E1” are highly formaldehyde-free; they can be used in an unlimited way without a surface coating.

• Class plates “E2” i “E3” may only be used with a coating, formaldehyde-tight.

All chipboards must be clearly marked according to the emission class. Most buyers of timber and building materials have emission class boards “E1”.

Particle boards are available in thicknesses from 2 mm do 70 mm. The thicknesses are cold 8, 10, 13, 16, 19, 22 i 25 mm. Disc formats are not standardized (salable width 125 do 260 mm; length 250 do 550 cm). Due to the heavy weight of thick boards, we advise DIYers to use smaller formats. The choice of board thickness depends on the type of laying, support distances and subsequent load.