Specification

Windblock®- Rafter Infiltration Block
Provides the best moisture and air infiltration seal between the rafter vent and wall top plate.
Works well with Durovent® and proVent® to provide a moisture-impervious vent and block system.
• Polyboard material is waterproof and prevents moisture infiltration
• Secures vent in place eliminating blow-out during construction
• Blocks moisture from exterior and acts as an insulation stop for interior
• Great option for both 16" and 24" on-center applications