reroof over existing shingles

Double Layer Roofing Pros and Hidden Pitfalls Explained

by Marc | Sep 7, 2026 | Blog

Should You Reroof Over Existing Shingles? Yes, you can reroof over existing shingles in some cases, but only when there is one sound, flat layer of asphalt shingles, the roof deck is dry and solid, and local code allows a second layer. It can save 40-50% upfront by...