Installing metal roofing over shingles 1.
Putting shingles over metal roof.
This allows the new underlayment to act as a line of defense in the event that water somehow gets under the metal roof.
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.
There are two primary methods implemented when installing metal roofing over shingles.
Apply roofing felt all over your roof you need to make the roof as straight as possible.
Covering your existing asphalt shingles with metal roofing might be worth the expense.
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.
This method has its benefits as well.
Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof.
Use a starter strip or cut pieces for a starter course.
Here are some pros and cons.
Attach with nails along the top edge of the strip.
Need a new roof.
Yes you can install a metal roof over shingles.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.
Determine the measurement of your roof the measurement of your roof will help you know the number of materials you.
It provides a solid flat surface to attach the new metal roof to it creates an air gap between the back of the metal and the shingle roof which allows for airflow.
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.
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.
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.
Thus wood strips would be.
What to consider when putting a steel roof over asphalt shingles.
The first is running new underlayment over an existing shingle roof thus covering the old roof.
By the diy experts of the family handyman magazine.
Can you put steel roofing over asphalt.