40 Hour Property and Building Inspection Practice Test

For insulating efficiency, which foam is typically used in ICFs?

1. Closed-cell foam

2. Expanded polystyrene (EPS)

3. Polyurethane spray foam

4. Fiberglass batts

The correct answer is: Expanded polystyrene (EPS)

Expanded polystyrene (EPS) is commonly used in Insulated Concrete Forms (ICFs) due to its excellent insulating properties, cost-effectiveness, and ease of handling. EPS is a closed-cell foam that provides significant thermal insulation while being lightweight and easy to cut and shape, which aligns well with the construction methods used in ICF systems. The thermal resistance of EPS contributes to maintaining consistent indoor temperatures, enhances energy efficiency, and reduces heating and cooling costs in structures. Additionally, EPS can be produced in various densities, allowing it to be tailored for different insulation needs within ICFs, making it a popular choice in the construction industry. In contrast, other materials like closed-cell foam and polyurethane spray foam, while providing excellent insulation, are not as commonly used in ICF applications due to factors like higher cost or the necessity of specialized installation techniques. Fiberglass batts, while a traditional insulating material, do not provide the same level of air sealing and moisture resistance as EPS does within the context of ICFs.