AtticFoil - The ORIGINAL Do-It-Yourself Radiant Barrier Foil! Tearproof, commercial quality - ready to install. Reduce attic temperatures up to 30 degrees. FREE AtticFoil seam tape included. Other products will call their product (Attic Foil) We ONLY use PURE Aluminum – Double Sided Foil. We REFUSE to use the cheaper quality metalized plastic film product like many of our competitors - basically, a potato chip bag. These products will degrade over time in a hot attic. THIS is the difference between 97% reflectivity and 95% reflectivity and why we can offer a lifetime warɾanty. Perforated - AtticFoil has tiny holes to allow moisture to pass through. This reflective insulation is NOT a vapor barrier. (You don’t want a vapor barrier in your attic that can trap moisture, leading to air quality issues). All products have an internal tearproof tarp-like fabric. AtticFoil Multiple Sizes: Available in 26” and 48” - 26” is best to run vertically (up/down) in truss-style attics. 48” roll insulation is best to run horizontally (left/right) in standard open-frame attics. We ARE the RADIANT BARRIER EXPERTS! Complete install guide, videos, technical advice and great customer service.

AtticFoil is the ORIGINAL do-it-yourself radiant barrier—trusted by homeowners and professionals for over 20 years. Our reflective insulation rolls are made with 100% pure aluminum foil on both sides, not metalized plastic film (the same shiny stuff used in snack bags that deteriorates in heat). That’s the difference between 97% reflectivity and 95%, and it’s why we confidently back every roll with a lifetime warranty.

Available in 26" and 48" wide rolls, AtticFoil gives you flexibility for your attic layout. Choose 26" rolls for truss-style framing (ideal for vertical runs) and 26" for truss-built attics (great for horizontal runs). No matter which width or square footage (1000, 1500, or 2000 sq. ft), you’ll get a tearproof woven core that won’t rip during install—unlike fragile bubble foil products.

This reflective radiant barrier insulation is perforated for breathability, meaning it won’t trap moisture and is not a vapor barrier. That’s key for keeping your attic dr. Each roll also includes a free high-temperature acrylic tape to seal seams and maximize performance.

Whether you're improving energy efficiency, reducing attic temps by up to 30°F, or replacing failing foil insulation, AtticFoil delivers unmatched results. With expert install videos, guides, and top-rated customer service, it’s clear why we’re still the radiant barrier experts after all these years.