How To Install Corrugated Metal Roofing Over Shingles. The industry standard for underlayment is often thought of as felt paper (tar paper) but there are also many newer synthetic underlayments that are designed to work well with metal roofing. Can you install metal roof over shingles?
Installing metal roofing over shingles can help solve these issues. Attach your metal sheets to the framing. Minimum you need top do is install a a layer of 30 lb felt to act as a barrier.
Unlike a shingle roof, metal roofing systems use screws and fasteners to stay in place.
This is also the time to make sure your new r… Rather than corrugated, the batts or nailing. When one overlays without a furring strip, the shingles will telegraph through especially on longer sheets over time. However, the combined weight of asphalt shingles and metal roofing may require additional support in.