How To Installing A Metal Roof Over Shingles

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

How to installing 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. Anatomy of a steel roof. Make sure roof is square. The low weight of metal roofing is one thing that encourages this.

Most metal shingles will be attached to the roof using metal shingle. Put the steel down directly on a vapor barrier. How to install 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. Install the metal edging. Start at the highest point and the furthest point from the trash container and take off all the old shingles flashing vents and boots. We get asked this question all the time.

Install your metal edging around the perimeter of your roof. 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. 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.

Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps. Work at a comfortable steady pace trying not to rip up or carry off too much old roofing at once. Make a slat board base on top of the shingles. Can i install a new metal roof over shingles.

The vast majority of installations of the metal roofing systems produced by my company are over existing shingles. Use 1 1 4 inch. Codes vary so call your local building department to know how to install metal roofing over shingles properly code wise. You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof.

Installing metal roofing over shingles is the best solution. What s involved in how to install metal roofing. 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.