Spray insulation is a type of building material that is sprayed on walls, roofs, and attics as an air and vapor barrier. It consists of 2 composite materials, polyurethane and isocyanate, which are combined to create a chemical reaction that expands and hardens as it is applied. Professional contractors can apply the product faster and more efficiently than homeowners using a do-it-yourself kit, as well as ensure that the work meets all local and state construction requirements.
The most obvious benefit of spray foam is that it seals a home’s building envelope, which prevents energy leakage. A typical home loses enough energy to power two blimps every day due to gaps and cracks in the walls, floors, and doors. The air seal created by spray insulation stops drafts and saves on heating and cooling bills year-round.
Another major benefit of spray insulation is that it can be used in older homes or to retrofit wood-framed walls. The process involves drilling holes in the wood studs and filling them with spray foam, which can be a more cost-effective way to add insulation than replacing the drywall.
One downside of spray insulation is that it contains chemicals with a high global warming potential (GWP). During the application process, these compounds release volatile organic compounds that can contaminate indoor air quality and are dangerous to breathe. Choosing a contractor that uses non-toxic closed cell spray polyurethane insulation made from recycled plastic waste, such as HEATLOK SOY, will reduce these harmful compounds in your home and environment.