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Windblock - Rafter Infiltration Block is an attic ventilation system that is used with Durovent cuts energy loss at attic perimeter 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.
Windblock rafter air infiltration block maximize attic ventilation performance when used with Durovent rafter vent. For more details about Durovent, please click HERE. Benefits of WindBlock Windblock prevents wind-driven moisture and cold air infiltration between the wall top plate and rafter vent; reduces energy loss at the attic perimeter. The Benefits of a Ventilated Attic