For older houses, how is radiant barrier foil provided?

Radiant barrier foil in older houses is commonly provided as a roll for retrofitting. This approach is preferred because it allows for easy installation in various configurations, accommodating the diverse layouts found in older homes. The roll format is flexible, making it easier for installers to cut and fit the materials into spaces such as attics or between rafters.

This method is particularly advantageous during retrofitting projects, where workers need to adapt to existing structures rather than relying on premade panels or individual sheets, which may not fit as versatile or may create seams that could reduce effectiveness. Spray applications are also not commonly used for radiant barriers, as they require a different application method and may not provide the same level of performance that foil can in reflecting radiant heat.

Thus, using rolls for retrofitting ensures a practical, efficient, and effective way to install radiant barriers in older homes, enhancing energy efficiency while being relatively straightforward to implement.