Ductless Air Conditioning Installation in Boston – What Are the Pros and Cons of Foam Attic Insulation?
Spray foam attic insulation provides all the benefits of any insulating material in terms of energy savings in heating and cooling costs, but it has some distinct advantages and disadvantages when compared to other forms of insulation. The benefits of foam attic insulation include its high R-value, its ability to expand and completely fill gaps in small and awkward spaces, and the fact that it can be sprayed on the underside of the attic roof to prevent heat transfer through the roof.
Some types of foam can be used to not only insulate, but also to create an effective vapor and sound barrier. One disadvantage of this insulation is the expense, as professional installation is required. Moreover, the chemical nature of the material makes it flammable, dangerously toxic when burned and a skin and eye irritant; concerns also exist about possible emissions from the foam as it ages.
How to Install a Mini Split Air Conditioner in Boston? Hydrochlorofluorocarbons.
Another disadvantage is that some forms of spray foam use hydrochlorofluorocarbons (HCFCs) as the blowing agent. This gas contributes to damaging the earth’s ozone layer. The chemical nature of foam attic insulation can also be a problem. The foam material itself is flammable and if burned, releases toxic fumes. There is some concern about offgassing of hazardous vapors, including volatile organic compounds (VOCs), as the foam insulation ages.
Unlike closed-cell foams, open-cell light density foam requires an additional vapor barrier to prevent condensation and moisture problems. This presents an additional expense. Some controversy exists in the industry about the use of foam attic insulation on the underside of the roof. Its use might cause excessive heat buildup in the roofing material that could decrease its lifespan.
Mini Split AC in the USA 