R+Heatshield is perfect over attic insulation (use perforated type), under rafters and over crawl spaces. It works as a complete insulation for metal and post-frame buildings, garages and garage doors. The solid type is ideal wherever a vapor and air infiltration barrier is needed. Perfectly safe to use, requiring no special breathing or handling precautions. 99% Pure aluminum on both sides
Superior tear and puncture resistance
Can span eight feet unsupported
Withstands repeated pressure-washing.

• R+ Heatshield White, II & III Architectual Specs

• Astro-White I & II Tech Data