GreenGuard GG40-LG XPS Insulation Board
Low GWP formula Type VI XPS, min comp strength of 40 psi & 5 R-value/inch


Attic Rafter Vents comprise XPS that is thermoformed to a shape that, when installed between roof rafters, allows air to flow from the soffit to the attic space, keeping attics cooler in hot weather and help reduce moisture condensation in the attic during cold weather. They help optimize performance of attic insulation by minimizing wind washing, prevent blown insulation from blocking the air-flow, and keep the space between soffit vents and attic space open during construction over time.
Product Highlights
Available in straight or flex variations
For use in 16" or 24" rafter spaces
Does not rot or deteriorate

Helps optimize performance of attic insulation by minimizing wind washing, prevent blown insulation from blocking the air-flow.