Installing Tin Roofing Over Shingles

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.

Installing tin roofing over shingles.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. 3 install 1x4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1x4 purlins over the shingle roof. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems. In terms of performance many homeowners choose a steel roof making it the most popular option when it comes to creating a metal roof over existing shingles.

Although you can install corrugated metal roofing over shingles for the best foundation it is recommended that all the old roofing be removed. Make sure roof is square. Or installing the new metal roofing over furring strips 1 x 3s or similar will raise the metal and provide a ventilating air pocket between layers. A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles.

The industry standard for underlayment is often thought of as felt paper tar paper but there are also many newer synthetic underlayments that are designed to work well with metal roofing. Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise. Anatomy of a steel roof. The metal used for the roof can be tin copper aluminum or steel.

However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. If you choose to install metal roofing over shingles there are certain things you must keep in mind. Installation of metal roofing over shingles. Installing metal roofing over shingles is the best solution.

But roofers can install a vented metal roof that eliminates this potential problem. If trapped between the metal roofing and old roofing moisture can build up and cause mold and rot. Things to know about metal over shingle roof problems. Both metal and shingle roofs are great options for your next roofing project.

When choosing to install a metal roof homeowners need to. What s involved in how to install metal roofing. Address any existing roof leaks and replace rotten rafters or. Work at a comfortable steady pace trying not to rip up or carry off too much old roofing at once.

After all you ll be making a significant and long term investment. This is by far the most common way to install a metal roof. We re going to break them down so you know what to look out for.