Why a 3-Year-Old Roof in Dellwood Had Major Ice Dams

A roof less than 3 years old should not have ice dam problems. But that's exactly what we found on this home in Dellwood, MN. When something like that happens, it's almost never about the shingles - it's about what's going on underneath.

We found five separate issues working against this roof all at once. A bathroom vent was blowing warm, moist air directly into the attic instead of outside. The roof decking was installed too tight with no room for expansion. The skylight was missing its flashing tape. The soffit vents were completely blocked, cutting off any fresh air intake. And there were no exhaust vents to let heat escape. Any one of those problems can cause headaches. All five together? That's a recipe for ice dams, moisture buildup, and structural damage - fast.

Here's the thing most homeowners don't realize: ice dams are almost always a symptom, not the actual problem. Warm air escaping from the living space heats the roof deck unevenly. Snow melts, runs down, and refreezes at the cold eave. Over and over. The damage that follows - water intrusion, rotted decking, ruined insulation - happens slowly and quietly until it's a much bigger repair.

This is exactly why experience matters in roof repair. A less thorough inspection might have swapped out shingles and called it done. We went further - into the attic, into the decking, into every detail that was driving the real problem. That's the only way to fix something like this for good.

Hidden ventilation failures like these are more common than people think, especially in older homes that have been remodeled or had additions put on over the years. If you're seeing ice dams, staining on your ceilings, or unusually high heating bills, the roof system as a whole deserves a close look - not just the surface.