Asphalt shingles can weigh up to four pounds per square foot depending on the brand.
How to steel roof over shingles.
Before you reshingle a roof read our step by step guide for adding new shingles over old ones.
In some areas building officials only allow a re roof over one layer of 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.
Yes you can install a metal roof over shingles.
Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.
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.
Other areas will allow you to re roof over two layers.
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.
A steel roof is a lifetime investment lasting 50 years or more if it s a good one.
Make sure roof is square.
If you don t want to take our word for it check with your local building department.
In contrast steel shingles are.
Otherwise you will need to remove the shingles.
Anatomy of a steel roof.
Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.
However before you decide on reroofing with a metal roof you have to keep in mind that there are specific conditions that make reroofing with a metal roof safe.
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.
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 metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles.