Roofing Washington, One Home at a Time
Ice dam prevention corrects the attic heat loss and ventilation problems that let damming ice form at your eaves in the first place.
Ice dams are a symptom of a warm roof deck, so lasting prevention means fixing what happens below the shingles. We air-seal attic bypasses, add insulation, and balance intake and exhaust ventilation so the deck stays cold and snow melts evenly. Where the building cannot be fully corrected, we add ice-and-water shield at the eaves or heat cable as a backstop. This whole-system approach ends the yearly cycle of leaks and emergency removals common in colder Northwest neighborhoods.
Fixes the root cause instead of treating symptoms; Air-sealing and insulation that also cut heating bills; Balanced ventilation to keep the deck cold; Eave membrane or heat cable as a targeted backup; Ends recurring winter leak emergencies
1) Inspect the attic for heat loss, bypasses, and ventilation gaps; 2) Air-seal leaks and top up insulation to code levels; 3) Balance soffit intake and ridge exhaust ventilation; 4) Add eave ice-and-water shield or heat cable where needed
Extent of the air-sealing and insulation upgrades required; Attic accessibility and existing ventilation layout; Whether eave membrane or heat cable is added; Roof and attic size; Complexity of the roofline's valleys and eaves
Do prevention work in the dry season so the attic and roof are ready long before the first freeze.