Before you install metal roofing repair any damage to the wood under the shingles.
How to install metal roofing over shingles video.
As long as the plywood under the shingle roof is in good condition this way can provide many benefits.
In this video i cover measuring the roof figuring the metal th.
Otherwise you will need to remove the shingles.
Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.
Make sure roof is square.
Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.
However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof.
Then cover the entire roof with a layer of insulation and secure it with a staple gun.
Consult the guide for your shingle brand to determine the specific method of installation required to preserve the warranty.
Before you reshingle a roof read our step by step guide for adding new shingles over old ones.
A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles.
This is by far the most common way to install a metal roof.
Most metal shingles will be attached to the roof using metal shingle clips but metal roofing shingle installation can be system specific.