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Roofing Over Existing Shingles: Best Practices and Guidelines
Can GAF Shingles Be Installed Over Existing Shingles? Yes, GAF shingles can be installed over existing strip shingles, T-lock shingles, wood shingles, laminated shingles, and other asphalt premium shingles. This can be a cost-effective solution for homeowners looking to upgrade their roofs without a complete tear-off. What Is Required to Roof Over Existing Shingles? For…