How To Put Steel Roof Over Shingles Roof

Some consideration for vent stacks and chimneys is required during the design process.

How to put steel roof over shingles roof.

Move from bottom to top. Start on the lower edge of the roof install the starter shingles by nailing them down using roofing nails. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. Can i install a new metal roof over shingles.

Make a slat board base on top of the 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. This is by far the most common way to install a metal roof.

Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. As long as the plywood under the shingle roof is in good condition this way can provide many benefits. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Metal roof over shingles condensation metal roofs must be laid flat on a vapor barrier because steel will condensate if there s any air space underneath it.

Yes you can and by doing so you save in the labor and hassle of tearing off the old roof and you won t be contributing to filling our landfills. Put the steel down directly on a vapor barrier. 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. 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.

It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same. Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board. Attach them to your roof with 3 inch wood screws in each corner. You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof.

Your first row of shingles should overhang the drip edge nail four to six nails below the tar line on every shingle. We get asked this question all the time. Make sure roof is square. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

Installing steel roofing over existing roofing materials is fairly simple.