STYRORAIL SR.AIR™ Rigid Insulation with Air & Weather Barrier

STYRORAIL SR.AIR™ is a high-performance exterior insulation panel that combines Type 2 expanded polystyrene (EPS) rigid insulation with an integrated air and weather barrier. Designed for installation on the exterior of framed walls, SR.AIR™ helps create a continuous thermal envelope while reducing air infiltration, thermal bridging, and the risk of water penetration.

The built-in breathable membrane allows moisture vapour to escape while directing water droplets toward the exterior. Its 4" overlapping edges on two sides help create sealed joints and can eliminate the need for sealing tape at joints covered by furring, making installation faster and more efficient.

Key Features:

• Combines rigid EPS insulation with an integrated air and weather barrier

• Provides continuous exterior insulation to help reduce thermal bridging

• 4" overlapping edges help create a complete air-tight assembly

• Breathable membrane allows moisture vapour to escape

• Helps protect against air and unexpected water infiltration

• Meets CAN/ULC-S701.1 requirements

• Type 2 EPS listed under CCMC 13271-L

• Air and weather barrier listed under CCMC 13292-R and CCMC 13329-R

• Available in multiple thicknesses and R-values from R4.0 to R12.0

• Graphite EPS options are available for higher R-values

Ideal for residential and light commercial wall assemblies where continuous insulation, air sealing, and weather protection are required.