Install Tin Roof Over Existing Shingles

Install the metal edging.

Install tin roof over existing shingles.

The problem with this is that as the metal heats up and expands or cools down and contracts it moves a little on the roof. The vast majority of installations of the metal roofing systems produced by my company are over existing shingles. Make a slat board base on top of the shingles. 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.

You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. Your goal with the roofing felt is to make sure everything is as. 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. Getting an accurate measurement will help you determine the.

Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh. A steel roof is a lifetime investment lasting 50 years or more if it s a good one. How to install a metal roof over shingles. Some people think that they can just install the metal roofing right over the old shingles roof without any barrier in between but this is highly not recommended.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Use 1 1 4 inch. Get a precise measurement of your roof surface. Step by step guide step 1.

Yes you can install a metal roof over shingles. Lay down roofing felt over the entire roof. Install your metal edging around the perimeter of your roof. Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality.

However you ll want to check with your local building department before you make any decisions.