Two layer polyethylene bubble core attached to two layers of highly reflective metallized aluminum polyester film. The core is designed to hold staples without tearing, delivering lightweight yet durable insulation. It does not compress, collapse or disintegrate. Key features and benefits - Reflects up to 97% of radiant heat - Provides effective radiant barrier performance - Meets ASTM E84 Class A and ASTM E2599 Class 1 radiant barrier specifications - Durable and maintenance-free - Lightweight, tear-resistant construction - Not affected by moisture or humidity - Easy to install - Cut easily with a utility knife or scissors - Install easier than fiberglast - Just place in position of staples, nails or adhesives - No mess and no itchy fiber Material and performance details - Composition: two-layer polyethylene air bubbles bonded to the two layers of reflective metallized aluminum polyester film - Fire and radiant barrier rating: ASTM E84 Class A; ASTM E2599 Class 1 - Moisture resistance: not affected by moisture; helps prevent condensation - Durability: resists tearing, tearing during installation, and disintegration over time Installation and compatibility - Installation method: designed to be installed in place of staples, nails or adhesives - Maintenance: maintenance-free - Compatibility: suitable for use in various applications where a radiant barrier and insulation are needed 2-3 practical use scenarios - Attic and roof deck insulation - Install under roof decking or between rafters to reflect radiant heat from the roof, helping to keep attic spaces cooler in hot weather and reducing cooling load in the home or building - Exterior walls of metal buildings or insulated structures - Use as a radiant barrier and insulation layer to reduce heat transfer from exterior surfaces into the interior, improving comfort and energy efficiency - Crawl spaces, basements, or utility enclosures - Install to minimize condensation and thermal transfer, contributing to drier, more comfortable spaces and lower energy consumption year-round Performance impact - Energy efficiency: reduces radiant heat transfer, contributing to lower energy bills throughout the year - Comfort: helps stabilize interior temperatures by reflecting radiant heat - Practicality: lightweight, easy to handle, and simple to cut to fit existing spaces without specialty tools This product provides a straightforward, maintenance-free solution for improving thermal performance and reducing radiant heat transfer in a variety of structural applications, while staying easy to install and mess-free.