In Anchorage, attic moisture problems are usually caused by air leakage — not roof leaks. Warm indoor air escapes into a cold attic, condenses, and covers your sheathing in frost. When that frost melts, it can drip back into insulation and ceilings. Most homeowners are surprised to learn their roof isn’t leaking — their house is.

Even when you don’t see water inside the home, moisture in the attic reduces insulation performance, feeds mold growth, and slowly damages roof framing.

During inspections, we commonly find disconnected bath fans, leaky attic floors, blocked soffit vents, and unsealed chimney chases and plumbing penetrations. These are all fixable issues — but left alone, they create expensive winter problems.