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Home isolation proves to be a highly efficient way to reduce heat loss, which typically occurs inside the house. Despite the fact that manufacturers of insulators offer us numerous options these days, experts still consider foam board insulation the most effective and widespread solution. It may be done using either polystyrene or polyisocyanurate core boards.
Polyisocyanurate insulation (which is the improved version of polyurethane) is distinguished from other options by the higher content of methylene diphenyl diisocyanate. Depending on the available ratio of this substance (which may typically vary from two hundred to five hundred), the foam boards may have diverse stiffness, durability, chemical and thermal performance. Thus, your final choice should basically depend upon the purpose and place of isolation.
Nowadays lots of house owners tend to use this material, since it features higher chemical and thermal stability. It is quite sturdy and durable, due to which it may be applied on any foundation, be it exterior or interior surface. It is also able to withstand high temperatures, therefore you may utilize it when isolating your attic or roof, for example. If you want it to be moisture-resistant, it is better to use it in combination with aluminum facing.
Core panels produced of this material have a wide range of R-values, the most typical of which vary from 5.5 and up to 8.8 per one inch of its general thickness. However, if you suddenly realize that you require higher r value, you may increase this index by means of adding special protective aluminum foil. Thus, you will not only enhance the rate, but stabilize thermal performance as well. These characteristics are important, since they will help you decide what type of foam board insulator exactly you need.
Polyisocyanurate isolations are frequently produced either in the form of foam based sprays or rigid thermal materials that are distinguished from the majority of others by perfect thermal conductivity and high temperature resistance. Due to such characteristics, this insulator is used not only for home insulation needs, but for encapsulation of residential and industrial piping and other purposes.
The only aspect you have to bear in mind when purchasing this product is that panels, produced of this material have a tendency to shrink with the lapse of time. However, in the majority of cases, it is the manufacturer (not the purchaser) that is expected to consider potential shrinking allowances. Still, the higher the quality of the material is, the more durable and long-lasting it proves to be.