Steel & Metal Buildings: Airpace Requirements for Reflective Insulation
This entry was posted on March 21, 2012.
Reflective insulation requires an existing airspace on one side of the insulation in order to work properly as a radiant barrier. This airspace may be small but it is essential. Foil insulation used without an airspace, as in under concrete insulation for example cease being a radiant barrier. You still get some insulation value but it's in the form of a thermal break, not a radiant barrier.
Tempshield double bubble reflective both or reflective one side products have been tested in various metal building applications and achieved various r-values depending on the installation.
Please take a look at our metal building insulation airspace page where you can find the required airspace, application, and r-value for all of your barn insulation needs.