Metal Roof Over Existing Asphalt Shingles

Can you avoid tearing off your old asphalt shingle roof by putting a steel roof over it.

Metal roof over existing asphalt shingles.

Most codes now allow no more than two layers of roofing before requiring a complete tear off. 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. In some areas building officials only allow a re roof over one layer of shingles. If you don t want to take our word for it check with your local building department.

Doesn t provide the flattest surface for the metal roofing to be installed over each course of shingles is about a 1 8 higher than the course just below it. Can you install metal roofing over asphalt shingles. Asphalt shingles can weigh up to four pounds per square foot depending on the brand. To vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath.

However before you decide on reroofing with a metal roof you have to keep in mind that there are specific conditions that make reroofing with a. 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. The metal used for the roof can be tin copper aluminum or steel.

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 shingles is the best solution. Some roofing contractors recommend reroofing with standing seam metal because the total roof weight is but a fraction of a standard asphalt shingle roof which helps preserve the roofing integrity. Address any existing roof leaks and replace rotten rafters or.

This post discusses using stone coated metal shingles over the top of asphalt shingles. Metal roofing weighs less than one pound per square foot. When choosing to install a metal roof homeowners need to. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

We re going to break them down so you know what to look out for. Installation of metal roofing over shingles.