Alabama Contractors License Practice Exam

Spray foam applied to the interior cavity side shall have a minimum density of ___ lbs per cubic foot to meet the insulating sheathing requirement.

1. 2

2. 3

3. 4

4. 6

The correct answer is: 3

To meet the insulating sheathing requirement, spray foam applied to the interior cavity side is required to have a minimum density of 3 pounds per cubic foot. This density provides the necessary thermal resistance and structural support that is critical for effective insulation in various building applications. The correct density ensures that the foam performs well in terms of insulation value, helps prevent air infiltration, and adheres properly to surfaces. Spray foam insulation that meets this density not only enhances energy efficiency but also contributes to moisture control and sound attenuation. It is essential for contractors to be aware of these industry standards to comply with building codes and ensure optimal performance of the materials being used in construction projects. Meeting or exceeding the specified minimum density is key to achieving the desired performance characteristics of the insulation. Higher densities may exist in other applications or insulation types but for this specific requirement within the context of insulating sheathing, the minimum of 3 lbs per cubic foot is the standard to aim for.