Such material as polyfoam, represents frothed structure which main volume occupies air. High sound-proof and thermoinsulating properties of polyfoam are caused by availability of large amount of gas in its structure. The foam plates are unstable to influence of paint and varnish coatings and nitropaints therefore before works with it it is necessary to study information on what they glue polyfoam among themselves and to other surfaces.
In construction and design most often use the polyurethane, polyvinylchloride and polystyrine foam plates having various density depending on look and way of its processing.
Polyfoam – universal heat-insulating and the gobo which is widely used in construction. It is very often used for warming of walls of the house both from internal, and from outer end. Compartments of small vessels are also filled with the foam plates that considerably increase their buoyancy. This material is irreplaceable in medicine where it is used for production of the container used for transportation of donor organs.
Such types of polyfoam as penoplex, polysterene concrete and polyterm are used for production of the decorative elements intended for exterior and interior finish of rooms.
The foam plates differ on density and rigidity. Also it is necessary to make a start from these characteristics when choosing of the gluing structure for polyfoam. If the foam material is used as heater of external walls of the house, then its fastening and pasting is carried out by means of front glue with high frost resistance, the glue mixes intended for ceramic finishing, and silicone sealant. Also construction liquid nails and even putty are applied to walls. The glue choice in this case is not basic, the main thing that in its structure there was no acetone, gasoline and other organic solvents having an adverse effect on expanded polystyrene. For increase in term of operation polyfoam in addition fastens to facade by means of dowels with mushrooms or umbrellas.
Water from water emulsion adhesive badly evaporates that badly affects connection durability. Therefore it is necessary to enter the plaster which is quickly absorbing moisture into it.
For polyfoam pasting among themselves it is possible to use glue or liquid nails. For this purpose not less than five flat cakes of glue on all its plane are applied on leaf. It can be four corners and the central point. Quite often plates of polyfoam stack in load-bearing framework. In this case it is fastened with glue mix. If material is used at the device of two-layer thermal insulation, it can be stuck together with the help of liquid nails, mastics, the moment mounting, mixes for ceramic tile or silicone sealant.
When using glue mix it is necessary to remember that it is necessary to dissolve it in water just before use. Otherwise she will lose all the properties.
The wall to which it is going to paste polyfoam has to be cleaned from dirt and dust. In addition, on it it will be necessary to close up cracks and chips. And only after that the wall is coated with the prepared glue mix. Then the same mix is applied on the sheet of polyfoam then it is put to wall.