We are renovating our 123-year-old house. We decided to use spray foam insulation. What is spray foam insulation, and is it worth the money?
Spray foam insulation is an insulation material applied using a spray gun. It is made by mixing two chemical components, polyol resin, and isocyanate. These chemicals react when combined.
The reaction result is a foam that fills gaps, hardens, and creates an effective thermal barrier. There are two main types of spray foam insulation: open-cell and closed-cell.
Open-cell spray foam has a lower density and is more flexible, allowing it to expand and contract with temperature changes. It is a good choice for soundproofing and can be used in interior applications. Closed-cell spray foam, on the other hand, has a higher density and provides a stronger, rigid barrier. It has a higher insulation value and can be used in both interior and exterior applications.
Excellent insulation properties: Spray foam insulation has a high R-value, measuring its thermal resistance. It can provide better insulation than traditional insulation materials like fiberglass or cellulose.
Air sealing: Spray foam insulation expands and fills gaps, creating an effective air barrier. This can help prevent drafts and reduce the energy loss caused by air leakage.
Moisture resistance: Closed-cell spray foam has a high moisture resistance, which can help prevent mold growth and water damage.
Soundproofing: We sprayed the bedroom subfloors with closed-cell foam to stop our wood floors from creaking.
Cost: Spray foam insulation is generally more expensive than other insulation materials. The installation cost can vary depending on factors such as the size of the area to be insulated and the type of spray foam used.
Installation: Spray foam insulation requires professional installation. It involves mixing and spraying the chemicals, which should be done by trained and experienced installers to ensure proper application.
Health and safety: During installation, the chemicals used in spray foam insulation can release fumes that may be harmful if inhaled. It’s important to follow safety protocols and allow sufficient time for the foam to cure before occupying the space.
Whether spray foam insulation is worth the money depends on various factors, including your specific insulation needs, budget, and long-term goals. It can be a worthwhile investment if you prioritize energy efficiency, air sealing, and moisture resistance. It’s advisable to consult with insulation professionals or contractors who can assess your requirements and provide recommendations based on your situation.