Place a sheet from top to bottom on a section of the roof.
How to install a metal roof over existing shingles.
Use 1 4 inch metal wood screws to attach the metal sheets to the wood slat board base.
In terms of aesthetics you need to be careful in terms of choosing your metal roof solution so that it will blend into your surrounding neighborhood.
Also if the existing shingles on top are not level or in very poor condition you may need to put a layer of roofing felt down or wooden frame over the shingles before installing the new metal roof.
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.
How to install a metal roof over existing shingles.
You must put in a completely new underlayment over the existing shingles before you carry out any installation.
Start with an underlayment over the existing shingles.
This will help prevent water leakage and provide a buffer between the metal roof and the existing shingles.
Metal roofing sheets have to be installed one at a time.
As long as the plywood under the shingle roof is in good condition this way can provide many benefits.
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.
To install it slide the flat wide flange underneath.
Install metal roofing sheets.
This is by far the most common way to install a metal roof.