First some context:
- Geographical location: City of Sacramento, CA, USA
- Building: Residential detached garage.
- Goal: To keep it cool in the summer and warm in the winter.
- Approach: kraft paper faced fiberglass batt insulation was stapled between the rafters. Now I thought I was finished…not:
Problem: The paper facing states (readable from within the garage):
WARNING! This facing will burn. Do not leave exposed. It must be covered with gypsum board or other code-approved materials and installed in compliance with all building codes. To prevent a fire, keep open flames and other sources of heat away from the facing.
The product documentation, consistently, states:
Kraft and standard foil facing will burn. Do not leave exposed. Facing must be installed in substantial contact with an approved ceiling, floor or wall material.
Question: Is it allowed to staple an aluminium foil radiant barrier (assume fire rating Class A / Class 1, ASTM E-84) over the paper facing to meet code as shown in the figure below? It's easier to install compared to drywall.