How To Put A Metal Roof Over Existing Shingles

Metal roofing sheets have to be installed one at a time.

How to put a metal roof over existing shingles.

Install metal roofing sheets. Well that s why the metal roof is such like an eco friendly product because you don t have to get rid of all of that stuff to the landfills. In terms of aesthetics you need to be careful in terms of choosing your metal roof solution so that it will blend into your surrounding neighborhood. 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.

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. The low weight of metal roofing is one thing that encourages this. Rip cut the starter strip or starter pieces so that they butt up against the second course of existing shingles and are even with the front edge of the existing roofing. A steel roof is a lifetime investment lasting 50 years or more if it s a good one.

The vast majority of installations of the metal roofing systems produced by my company are over existing shingles. Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality. The purlins are screwed or nailed down to the roof deck depending on how the metal roofing manufacturer has testing for their roofing panels and then the metal is installed to the purlins. 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.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Use 1 4 inch metal wood screws to attach the metal sheets to the wood slat board base. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Use a starter strip or cut pieces for a starter course.

The second way to install a metal roof over a shingle roof is with the use of purlins or battens. Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh. Place a sheet from top to bottom on a section of the roof. 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.

Attach with nails along the top edge of the strip. But now that i said that i would tell you that if it was my house i probably would and the reason is i don t want to have all those old shingles under the roof. This method has its benefits as well.