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.
Installin gmetal roof over shingles.
How to install a metal roof over shingles.
Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof.
The answer to the question of how to install metal roofing over shingles has many advantages among them are.
Typically a roof starts with shingles but did you know that you can actually just install the new metal roof on top of the shingles.
Can i install a new 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.
You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof.
Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.
Yes you can install a metal roof over shingles.
A metal roof reduces cooling costs during the summer months because it can reflect the sun s rays.
In terms of performance many homeowners choose a steel roof making it the most popular option when it comes to creating a metal roof over existing shingles.
However you ll want to check with your local building department before you make any decisions.
This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.
Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.
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.
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.
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.
Most metal shingles will be attached to the roof using metal shingle.
The metal used for the roof can be tin copper aluminum or steel.
Make sure roof is square.
Another added benefit is that the layers of your old roof will further insulate your home.
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.