Installing Metal Roofing Over Asphalt Shingles

Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath.

Installing metal roofing over asphalt 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. After all you ll be making a significant and long term investment. A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems.

We re going to break them down so you know what to look out for. In contrast steel shingles are small panels installed in horizontal rows much like other shingles. If you want to install steel over asphalt your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel. But first here are a few precautions about the underlying material.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Fiberglass core or matting an asphalt coating and a ceramic or stone granule surface give this material its durability. Installation of metal roofing over shingles. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath. 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. 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.

They are available in a variety of colors and textures are low cost and provide a traditional aesthetic. How to install metal roofing over shingles. Asphalt shingles are the most popular roofing material. If you choose to install metal roofing over shingles there are certain things you must keep in mind.

Both metal and shingle roofs are great options for your next roofing project. Otherwise you will need to remove the shingles. Things to know about metal over shingle roof problems. Address any existing roof leaks and replace rotten rafters or.

It depends on the situation. See the full post here.