10 Best Attic Radiant Barrier 2025 in the United States

The INSULATION MARKETPLACE SmartSHIELD 3mm Reflective Insulation roll is designed to act as an effective radiant barrier, reflecting about 95% of radiant heat, which helps reduce heat gain in summer and heat loss in winter. This can lead to noticeable savings on your energy bills. It features a 3mm thick closed-cell polyethylene foam core, sandwiched between highly reflective foil on both sides, making it strong yet lightweight and easy to handle during installation.

The RadiantGUARD Xtreme Heavy Duty Foil Insulation Roll is designed for those seeking effective attic insulation. A significant strength of this product is its high reflectivity, blocking 95% of radiant heat transfer, which can significantly reduce attic temperatures by up to 30 degrees. This feature helps in maintaining consistent home temperatures and lowering utility bills all year round. Verified quality and compliance with ASTM C1313 standards ensure that the product meets stringent safety and performance criteria, including a Class A / Class 1 fire rating, making it a reliable choice for both safety and efficiency.

The SmartSHIELD Reflective Insulation roll is designed as a radiant barrier that reflects up to 95% of radiant heat, making it very effective at reducing heat transfer in both summer and winter. This high reflectivity helps keep your home cooler in hot months and warmer in cold months, which can lead to noticeable energy savings on utility bills. The product has a 1.5mm thickness with a foam core sandwiched between engineered foil layers, which not only boosts durability but also provides a vapor barrier to prevent moisture buildup and condensation—important for attic environments where humidity can cause problems.