3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof.
Do it yourself metal roofing over shingles.
If you choose to install metal roofing over shingles there are certain things you must keep in mind.
Otherwise you will need to remove the shingles.
Address any existing roof leaks and replace rotten rafters or.
Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.
But first here are a few precautions about the underlying material.
Installation of metal roofing over shingles.
Installing steel roofing over existing roofing materials is fairly simple.
But some steel shingle manufacturers offer do it yourself systems that cost about the same as an installed asphalt roof for those who want to learn how to instal a metal roof on their own.
We re going to break them down so you know what to look out for.
Next use 1 inch nails to secure some metal edging to the perimeter of the roof.
Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.
Before you install metal roofing repair any damage to the wood under the shingles.
Before you reshingle a roof read our step by step guide for adding new shingles over old ones.
Doesn t provide the flattest surface for the metal roofing to be installed over each course of shingles is about a 1 8 higher than the course just below it.
However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof.
These systems aren t attached to a frame but instead install directly on the old roof.
Then cover the entire roof with a layer of insulation and secure it with a staple gun.
Metal roofing is also available in the form of shingles.
Make sure roof is square.
Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.