Another added benefit is that the layers of your old roof will further insulate your home.
Installing steel roof over shingles.
Yes you can install a metal roof over 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.
Make sure roof is square.
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.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.
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.
Install your metal edging around the perimeter of your roof.
Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof.
Make a slat board base on top of the shingles.
Install the metal edging.
Can i install a new metal roof over shingles.
You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof.
If you want to install steel over asphalt your best choice is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel.
How to install a metal roof over shingles hunker.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.