Install Tin Roof Over Existing Shingles

Make a slat board base on top of the shingles.

Install tin roof over existing shingles.

Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh. Lay down roofing felt over the entire roof. 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. Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality.

You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your roof. How to install a metal roof over shingles. The low weight of metal roofing is one thing that encourages this. Step by step guide step 1.

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. 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. 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.

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. Start putting the metal panels. However you ll want to check with your local building department before you make any decisions. Use 1 1 4 inch.

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Getting an accurate measurement will help you determine the. 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. Install your metal edging around the perimeter of your roof.

Your goal with the roofing felt is to make sure everything is as.