How To Install Tin Roofing Over Shingles
Give an allowance for flashing to be placed in chimneys, dormers or other seams to improve waterproofing.
How to install tin roofing over shingles. Steps to installing a metal roof over shingles. I have a roofing problem similar to one described by jim (message from 04/09). For ideal results you should ensure that the boards are 24″ apart.
A common installation tactic for adding metal roof over shingles is to add small slats of wood and secure those slats of wood to the roof decking. On flat, even roofs, you can place the metal roofing directly on top. By removing the old roof before the new roof’s installation, you are able to give the underlayment a thorough inspection to ensure there are no damages that could cause leaks or other issues with your new roof.
Asphalt roofs typically last 20 to 30 years, depending on the installation and shingle quality. If you wish to install metal roofing over shingles, it’s recommended to do it one of two ways. A steel roof is a lifetime investment, lasting 50 years or more if it’s a good one.
What is the best way to install a metal roof over shingles? The national average is approximately $6,000. You place the wooden strips at this point to secure the felt.
A layer of underlayment installed on top of the existing shingles will help keep the granules of the old shingles from rubbing against the back of the metal and causing possible corrosion. The cost of a shingle roof can vary based upon a number of. The first panels need to overlap with your edging by about ½”.
Cool outside air travels under the shingles to the vented ridge, pulling out moisture and heat. Lay the felt and wooden strips. Though there are many ways to install a metal roof over shingles, we recommend this installation method, which provides the most durability over time.
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