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.
Installing metal roof directly over shingles.
Install your metal edging around the perimeter of your roof.
Best setting for installing a metal roof over shingles on tight budget.
How to install a metal roof over shingles hunker.
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.
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.
You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof.
Yes you can install a metal roof over shingles.
This framework has three big advantages.
Install the metal edging.
Install over a framework of 2x2s.
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.
However you ll want to check with your local building department before you make any decisions.
Make a slat board base on top of the shingles.
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.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.