Ice Dam Prevention

Above Sheathing Ventilation(ASV)*

Above Sheathing Ventilation

 

ASV System Installed

ASV Barrier

Barrier/ Vent Gap

ASV Sheathing

Sheathing Installed

ASV Soffit Vent

Intake Vent

Ridge Cap ASV

Exhaust Vent

*ASV systems are perfect for under metal roofs but can also be installed under asphalt shingle roofs.