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ARMA FOIL-VB is a non-perforated radiant barrier, vapor barrier and radon barrier in one roll. It has 95% reflectivity, 0.05 emissivity, and a Class A fire rating with zero flame spread. At 0.0058 perms, it blocks moisture and radon, making it suitable for crawl spaces, floors, and the interior side of insulation in some climates. It is lightweight and tear resistant, and installs with a staple gun and foil tape. Compared to perforated radiant barriers, it offers vapor and radon control, but it must be installed carefully to avoid trapping moisture in the wrong climate.
Availability unknown
Lowest price we've seen: $143.95 on Nov 4 at Energy Efficient Solutions. Tracked across 1 store since Nov 4.
ARMA FOIL-VB is a non-perforated foil that works as a radiant barrier, a vapor barrier and a radon barrier in one product. It has a water vapor permeability of 0.0058 perms. It is made with a proprietary process that produces a lighter weight material that is extremely tear resistant.
The 4 mil foil has an anti-oxidation coating and is bonded, not laminated. It meets current fire standards (ASTM E84 / ASTM E2599) and corrosivity testing (ASTM D3310). It is used as a vapor barrier or radon barrier, on the interior side of insulation in some climates only, and in floors and crawl spaces.
This 51 in x 235 ft roll covers about 1,000 sq ft. Add extra for overlapping seams. It installs with a staple gun and foil tape. Seal all overlaps, penetrations and staple tears with aluminum foil tape.
