How To Installing A Metal Roof Over Shingles

Installing metal roofing over shingles is the best solution.

How to installing a metal roof over shingles.

Metal roof over shingles condensation metal roofs must be laid flat on a vapor barrier because steel will condensate if there s any air space underneath it. The metal used for the roof can be tin copper aluminum or steel. 1 remove the shingles before installing the metal roof the first way to install a metal roof over shingles is by completely removing the old shingles before installing the new metal roof. Put the steel down directly on a vapor barrier.

It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same. Make sure roof is square. What s involved in how to install metal roofing. Install your metal edging around the perimeter of your roof.

Replace all these with the new metal roofing. Use 1 1 4 inch. Anatomy of a steel roof. How to install a metal roof over shingles.

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. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Most metal shingles will be attached to the roof using metal shingle.

Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise. Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. A benefit to doing it this way is that you can see if there is any rotten plywood that needs to be replaced before installing the new roof.

The vast majority of installations of the metal roofing systems produced by my company are over existing shingles. Yes you can and by doing so you save in the labor and hassle of tearing off the old roof and you won t be contributing to filling our landfills. Make a slat board base on top of the shingles. We get asked this question all the time.

The low weight of metal roofing is one thing that encourages this. You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. Work at a comfortable steady pace trying not to rip up or carry off too much old roofing at once.