When choosing to install a metal roof homeowners need to take into account several trade offs involving cost and performance.
Putting tin roof over shingles.
Make a slat board base on top of the shingles.
Installing metal roofing over shingles is the best solution.
This is the minimum that needs to be done.
Move from bottom to top.
Yes you can install a metal roof over 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.
The main benefit of doing it this way is that it is the fastest way to install a new metal roof over a shingle roof.
The low weight of metal roofing is one thing that encourages this.
The metal used for the roof can be tin copper aluminum or steel.
Another added benefit is that the layers of your old roof will further insulate your home.
Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh.
Can i install a new metal roof over shingles.
The second way to install a metal roof over a shingle roof is with the use of purlins or battens.
You will need to lay some 1 by 4 inch pine boards lengthwise every two feet on your 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.
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.
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.
Yes you can and by doing so you save in the labor and hassle of tearing off the old roof and you won t be contributing to filling our landfills.
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.
Attach them to your roof with 3 inch wood screws in each corner.
Can you put metal roof over shingles the reason why this is important is because a shingle roof is granulated very similar to sandpaper.
On has the metal expands and contracts due to weather changes the metal will actually move.
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.