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 tin roof over existing 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.
Step by step guide step 1.
Yes you can install a metal roof over shingles.
Install the metal edging.
However you ll want to check with your local building department before you make any decisions.
Lay down roofing felt over the entire roof.
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.
Start putting the metal panels.
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.
Asphalt roofs typically last 20 to 30 years depending on the installation and shingle quality.
Get a precise measurement of your roof surface.
The low weight of metal roofing is one thing that encourages this.
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.
Make a slat board base on top of the shingles.
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.
Your goal with the roofing felt is to make sure everything is as.
Getting an accurate measurement will help you determine the.
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.
Install your metal edging around the perimeter of your roof.