Reroofing is the practice that involves installing a new roof over an existing one.
Installing metal roofing on shingles.
You will also need to invest in some specialty tools to help you get the job done.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.
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 a slat board base on top of the shingles.
How to install a metal roof over shingles hunker.
Metal roofing is much more difficult to install than asphalt 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.
You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof.
Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.
Space the screws about 12 in 30 cm apart.
Install the metal edging.
Some roofers recommend this practice to homeowners who are planning on switching from an asphalt shingle roof.
1 remove the shingles before installing the metal roof the first way to install a metal roof over shingles is by completely removing the old shingles before installing the new metal roof.
Should old shingles be removed before new installation.
Most metal shingles will be attached to the roof using metal shingle.
Make sure that the screws are all aligned evenly as you will be able to see them from the ground if they are.
However you ll want to check with your local building department before you make any decisions.
Use your neoprene washer head screws to secure the metal to the sheathing.
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.
A benefit to doing it this way is that you can see if there is any rotten plywood that needs to be replaced before installing the new roof.
Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.
March 11 2020 by safe harbor roofing.
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.
If you don t know how to cut metal roofing panels you can warp them or damage the protective coating that prevents rust.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.
This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.