Polyurethane foam - has found its application as ainsulation even in the sixties, when it was used in refrigerators. But more widespread use of polyurethane insulation (foam) was obtained in the late nineties.
There are several opinions about the material, someone claims that this is an excellent insulation, and someone on the contrary, rejects the very possibility of its use in homes and even offices.
Pros and cons of polyurethane foam insulation
It is believed that the combustible material is a polyurethane foam. Yes, it really burns, but just like all polymeric materials for insulation. Absolutely not burn only basalt fiber and expanded clay and then, subject to certain conditions. Also, foam lit only by direct exposure to a flame. Moreover, modern polyurethane flame retardants are composed and therefore are self-extinguishing.
Active use of PRP was made possible not onlythanks to its thermal insulation properties, and ease of use. Foam insulation is a liquid easily penetrates into the far corners of roofs, pipes, deformed surfaces.</ Blockquote>
Polyurethane foam is toxic. However, it can only be considered environmentally friendly wood and stone, and not treated with chemicals. Most items made of plastic emit harmful for the body and the nature of the substance. Therefore, the norms of maximum permissible concentration of air pollutants. New books, for example, release of lead contained in the paint, plating a new car - a complex toxin, and such examples in everyday life are many. By the way, polyurethane foam allocates residual gases only three days, after that it becomes practically harmless.
A test was conducted, which resulted inIt revealed that mineral wool retains about 18% moisture. Penoizol absorbs 13-14%, and high-density polyurethane foam retains only 1-2% of water. From this we can conclude that the thermal insulation made from polyurethane rather hygroscopic. Warmed house not be chilled and not be struck by a fungus or mold. However, it should be remembered that the foam should have a sufficiently high strength, otherwise such an effect will not work.
Timely care for heater - guarantee longevity
Polyurethane foam is destroyed by about 1 mm per year. But if it is to cover oil or latex paint, insulation will last another 30 years.
If the surface is well degreased and dry, the polyurethane foam adheres to almost everything, it allows you to apply it even on inclined surfaces, which is very convenient and practical.
Unlike many insulation, polyurethane foam can be used as the outside of buildings, as well as within them. Polyurethane foam is treated with even the walls and bottoms of cars of small vessels.</ Blockquote>
So, if you follow the rules of operation anduse high-quality, dense polyurethane foam insulation, as well as choose to perform the work of a qualified expert in the field, a heater will last for many years and without harm to health.