Nowadays foam has become very popular in the construction and repair. Wherever it is not used today. Used when installing doors and windows, zapenivayut various cracks and cracks in hard-to-wall, ceiling and floor. In general, who on that much.
Sale foam in metal cylinders. There are three types of seasonal application: winter (application of -10 degrees), summer (from 5 degrees) and versatile.
According to the type of use is for household and pistols.
Expanding, dense foam clogs all the voids and gaps. Previously used for these purposes tow, soaked in the slurry. But it was not very convenient. Therefore, after the emergence of balloons with foam, this work is much simpler.
Absolutely can not greatly heat the tanks with foam to keep them for a long time in the sun. Before working cylinder necessarily a good shake. Working with her is required in well ventilated areas. Recommended zapenivat cracks and voids are not completely, and 50 - 70% due to its ability to grow (especially consumer). While working to keep the can upside down.
But there are some conditions and places in which to apply the foam core is impossible.
Where is its use is prohibited?
1. In the bath. In any case, can not be used in the assembly foam bath. It perfectly absorbs moisture, and such a favorable environment perfectly develops many different harmful microorganisms and fungi.
Also, sudden changes in temperature is very bad for the foam, and she quickly begins to deteriorate and crumble. Normally closed assembly foam stucco or sealant. But for a bath such options do not work, so the foam is left open and exposed to various influences of air and temperature.
2. Negative temperature. You can not apply the foam core at high subzero temperatures on the street. If you buy a bottle of winter foam, then follow the recommendations written in the manual. Usually, even winter foam can not withstand the temperature below - 20 degrees and freezes at the outlet of the container. And the place foaming recommended wet before, but this is not possible in winter.
3. When working with Penoplex universal foam. When using multigrade (universal) foam are not permitted to Penoplex. The fact that the composition of all-weather foam contained toluene, and he was very aggressive effect on Penoplex sheets, dissolving and softening them. Therefore, a universal foam and penoplex - incompatible. In extreme cases, when you buy a foam look it up, and choose the one where there is no toluene.
4. When installing the chimney. You can not use the foam when installing a chimney. There is certainly a heat-resistant foams, but even those I do not inspire confidence. In direct contact with the chimney and the strong heating, there is a great probability of its fire, or in the best case, the foam will fall apart after 2 - 3 months.
5. Leave in the open sunlight. Polyurethane foam is very much afraid of ultraviolet radiation. Therefore, it is recommended to protect the top of plaster or silicone. If she could stand on the open sunlight, 2 -3, it will begin to break down and crumble.
Can I zapenivat gap between logs or timbers?
Professionals and experts in their field do not recommend it if frame is still fresh. It is supposed to apply the foam to the well-established and settled log cabins. But it is better to collect and log-caulk to tow or moss, in order to avoid accumulation of condensate.
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