Installing Corrugated Metal Roofing Over Shingles

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

Installing corrugated metal roofing over 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. Install the metal edging. Laying steel roofing over shingles the right way. There are really two ways to install a metal roof over a shingle roof.

You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise. Our metal roofing profiles. However you ll want to check with your local building department before you make any decisions.

Step 1 work safely. Brace your extension ladder. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. Step 3 install slat board.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. So when we talk about metal roofing over shingles how does it work. Anatomy of a steel roof. Make a slat board base on top of the shingles.

Most metal shingles will be attached to the roof using metal shingle. The first one being that the new underlayment will act as a second line of defense in case water would to somehow get underneath the metal roof. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. Install your metal edging around the perimeter of your roof.

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. Metal roofing resists rot is not susceptible to insect damage and is non combustible a boon in fire prone areas. How to install a metal roof over shingles hunker. A corrugated metal roof is quieter than pvc when it rains.

Step 4 install edging. The first way is to run new underlayment over the existing shingle roof completely covering the old roof. Metal roofing is very slippery when wet. One downside is that the metal sheets have a susceptibility to denting both in installation and during hailstorms.

It provides a solid flat surface to attach the new metal roof to it creates an air gap between the back of the metal and the shingle roof which allows for airflow. What s involved in how to install metal roofing. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof. Step 5 install metal.

Step 2 measure roof.