Metal roofs have a long history of use.
Installing metal roof over shingles.
In terms of building codes many municipalities now have placed limits.
You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on 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 hunker.
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.
Can i install a new metal roof over shingles.
Install the metal edging.
Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof.
Yes you can install a metal roof over shingles.
Install your metal edging around the perimeter of your roof.
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.
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.
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.