Metal Roof Over Shingles Without Furring Strips

Or installing the new metal roofing over furring strips 1 x 3s or similar will raise the metal and provide a ventilating air pocket between layers.

Metal roof over shingles without furring strips. Installing steel roofing over existing roofing materials is fairly simple. 3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof. Metal roofs depend on thin strips of wood known as furring to allow air to circulate and prevent rot. This is by far the most common way to install a metal roof.

They are compatible with many different kinds of synthetic underlayment. Manufacturers provide 30 year warranties on metal roofing products. Consult the guide for your shingle brand to determine the specific method of installation required to preserve the warranty. If trapped between the metal roofing and old roofing moisture can build up and cause mold and rot.

Most metal shingles will be attached to the roof using metal shingle clips but metal roofing shingle installation can be system specific. But roofers can install a vented metal roof that eliminates this potential problem. Spacing of furring strips for metal roof when installing a metal roof over an existing roof insulate the spaces between the wood strips with rigid insulation to prevent condensation before. As long as the plywood under the shingle roof is in good condition this way can provide many benefits.

Furring strips are required if you plan to place a metal roof on top of existing shingles. Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board.