How To Put Steel Roof Over Shingles Roof

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

How to put steel roof over shingles roof.

It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same. Manufacturers provide 30 year warranties on metal roofing products. Most metal shingles will be attached to the roof using metal shingle. Your first row of shingles should overhang the drip edge nail four to six nails below the tar line on every shingle.

Installing steel roofing over existing roofing materials is fairly simple. Make sure roof is square. Put the steel down directly on a vapor barrier. As long as the plywood under the shingle roof is in good condition this way can provide many benefits.

Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board. Start on the lower edge of the roof install the starter shingles by nailing them down using roofing nails. Make a slat board base on top of the shingles. We get asked this question all the time.

Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath. This is by far the most common way to install a metal roof.

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. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. Some consideration for vent stacks and chimneys is required during the design process.

Installing a steel roof will cost approximately 60 per square foot. Attach them to your roof with 3 inch wood screws in each corner. Can i install a new metal roof over shingles. Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath.

Install another set of starter shingles at the sides of the roof ensure the two sets overlap.