First because the frame is screwed directly to the rafters and the interlocked shingles are screwed to the frame the roof can withstand.
Installing metal roof directly over shingles.
Install your metal edging around the perimeter of your roof.
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.
How to install a metal roof over shingles on a budget.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.
Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof.
Can i install a new metal roof over shingles.
Another added benefit is that the layers of your old roof will further insulate your home.
Make a slat board base on top of the shingles.
If you want to install steel over asphalt your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel.
You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof.
Building officials in some areas will only allow a re roof over one layer of shingles while officials in other places may allow you to place the roof over two layers of shingles.
It provides a solid flat surface to attach the new metal roof to it creates an air gap between the back of the metal and the shingle roof which allows for airflow.
How to install a metal roof over shingles hunker.
Install over a framework of 2x2s.
Yes you can install a metal roof over shingles.
Install the metal edging.