Decorative plaster

The big advantage before colouring of a surface or pasting by wall-paper decorative plaster possesses. It possesses, on the one hand, high decorative properties, and with another - hides small cracks, defects of a surface and insignificant roughnesses of walls.

Decorative relief plaster includes:

- Something binding - in most cases is synthetic pitch;

- Various additives - solvent, a thickener, preservatives, antiseptics and bio substances.

Let's consider all :

1) Type of a binding element.
It shares on 2 big groups:

Materials on a water basis.

As binding elements the set of materials on not water basis has epoxied pitches. They possess high wear resistance of coverings, durability, stability to excited environments and good adhesion to the basis. To internal works apply decorative plasters only on epoxied to a basis, and here with others compositions it is possible to work as inside, and outside of premises. After drawing and drying, decorative plasters do not burn, BUT! At heating above 140°С pitches which make a material basis, decay with allocation of toxic substances.

Materials on not water basis.
Decorative plasters on a water basis are much more safe: polymers entering into them, decaying, do not allocate poisonous substances. However there are also lacks: lower temperature firmness (they categorically cannot be put on strongly warmed up surfaces, more 65-90°С). Binding elements of plasters on a water basis are acrylic, styrene-acrylic, (PVA) and butadien-stirolnye dispersions.

- acrylic rack dispersions to temperature to 90°С, possess good adhesion to a surface, have excellent moisture resistance.

- Covering styrene-akrilovye possess still the best water resistance, have quite good decent stability to an ultraviolet, but at temperature more 65°С turn yellow.

- Butadien-stirolnye of a dispersion possess the highest moisture resistance, start to turn yellow too at temperature more 65°С and at all do not possess.

- PVA have not the best moisture resistance, are steady to temperature to 90°С.

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