Spray foam insulation is sprayed on walls, ceilings and roofs of new construction and existing homes to provide excellent thermal performance and soundproofing. It is typically sprayed in attics, crawl spaces and rim joists of existing homes and pole barns, while wall cavities and unfinished basements are often insulated with it in new construction.

While spray foam insulation is a great choice for many homeowners, it is not without its issues. Its disadvantages include poor air flow through a home, moisture entrapment and an increased fire risk in some homes. Its high cost can also be a problem.

The Science Behind Spray Foam Insulation: Green Earth Spray Foam Explains

The main advantage of spray foam is that it provides an air seal that stops heat energy and sound from escaping a home. It has a higher R-value per inch than fiberglass batt insulation and creates an effective vapor barrier. It is available in open or closed cell. Closed-cell is more expensive but physically stronger and more durable than open-cell. It is not as flexible as open-cell, however.

A common problem with spray foam is that moisture can get trapped under the insulation, which allows mold to grow. When it gets to this stage, the mold can cause serious health problems in a home and may require extensive remediation costs.

Another issue with spray foam is that it can be difficult to remove. The spray foam forms an adhesive bond with anything it touches, making it a challenge to remove even when the proper tools are used. It can also form a hard-to-reach film around cracks and crevices, which requires special care to remove. To avoid these issues, homeowners with SPF insulation should consider installing an enhanced home ventilation system such as an energy recovery or heat recovery ventilator (ERV / HRV). These systems will allow for proper airflow through a home and help reduce humidity, as well as remove pollutants.

Quality Insulation
205 Hawk Trail #2, Winchester, VA 22602, United States
540-532-5929