Andrew Muehlbauer Roofing | Licensed Roofing Repair in Pittsburgh, PA

This is a very common issue here due to our freeze-thaw cycles. Snow and ice melt and refreeze, expanding and contracting around shingles, flashing, and vents. This can create small openings. When a final thaw happens, water finds these new pathways into your home. A professional inspection can identify and seal these specific vulnerable points before the next winter.

Roof deck rot is typically caused by persistent moisture, often from undetected leaks or poor attic ventilation that allows heat and humidity to build up. In Pittsburgh, ice dams can also force water under shingles where it soaks into the decking. Fixing it involves locating the source of moisture, replacing the rotted wood, and ensuring proper ventilation and waterproofing to prevent a recurrence.

We recommend two key times: in late fall to prepare for winter and identify any vulnerabilities, and in early spring after the last freeze to assess any damage from ice and snow. This proactive schedule helps catch problems typical to our climate—like cracked shingles from ice or clogged gutters from winter debris—before they lead to interior leaks or structural rot.