Metal Roof Over Shingles Without Furring Strips

A potential problem with this type of installation is trapped water vapor.

Metal roof over shingles without furring strips.

Metal roofing is also available in the form of shingles. 3 install 1x4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1x4 purlins over the shingle roof. Steel roofing offers many benefits over slate tiles or asphalt shingles. You also could install a corrugated through fastened metal roofing product and probably not have issues.

This is by far the most common way to install a metal roof. While shingle removal is the preferred route tear off is messy and raises the cost of the job. Installing steel roofing over existing roofing materials is fairly simple. As long as the plywood under the shingle roof is in good condition this way can provide many benefits.

Metal roofs can be installed over your existing roof without tearing off shingles provided local building codes allow it. 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. Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board. Screw fasten the purlins using fasteners directly screwed into the trusses or rafters.

If your home s existing shingles are pretty curled you could install a textured metal roof such as a metal shingle shake or tile directly over the curled shingles along with underlayment. Metal roofing is resistant to fire rot and termites. Manufacturers provide 30 year warranties on metal roofing products. If you opt to put the metal roof atop current roof shingles it needs to be done in combination with a synthetic underlayment recommended.

This should then be followed up with galvanized steel hat channel preferred method or 1 x 2 furring strips.