Wet Valley Rot & Tannic Acid Under Heavy Oak Canopies
The Neighborhood Problem: Memorial is famous for its mature live oaks and post oaks hanging directly over rooflines. Leaves, twigs, and moss pile up deep in low-slope valleys, creating wet dams that never dry out in our humidity. Over time, decomposing leaves release tannic acid that dissolves shingle binders, rusts valley tin, and rots out the plywood decking underneath.
Blowing out leaves and spreading bucket tar is a temporary patch that cracks in weeks. During our targeted Roof Repair, we strip clogged valleys down to bare wood, verify decking firmness, and install puncture-resistant, high-temperature leak barriers. We then lay heavy-gauge metal valley flashings and install algae-resistant Asphalt Shingle Roofing so rain and debris slide off smoothly without soaking your framing.
