I am planning on installing a new metal roof this spring and would like to know what is recommended. I have talked to several contractors about the installation and have had different opinions on the subject. My roof is 20 plus years old with a double layer of shingles. The shingles are damaged and not laying flat. What would your recommendations be for the installation?
Linda DuBois
2016-12-09 16:47:48.000000
I am looking at applying the metal over the existing two layers of shingles. I need to know if underlayment and furring strips should be used in the installation. I am getting different opinions from the contractors.
Linda DuBois
2016-12-09 17:18:20.000000
Is felt or some type of vapor barrier recommended between the existing shingles and the metal panels?
Linda DuBois
2016-12-09 20:04:57.000000
What are the reasons for applying underlayment between the shingles and metal panels?
Linda DuBois
2016-12-10 17:27:41.000000
Linda,
Skies the limit. What look do you want to achieve and what look will work with the architecture of the home?
Eric Novotny
2016-12-09 16:52:25.000000
If the shingles are not laying flat, the roof substrate should be leveled via the installation of battens, purlins, etc.
Eric Novotny
2016-12-09 17:44:20.000000
You should review the literature and requirements that are specific to the panel manufacturer, however, a slip layer is always required in some capacity. This is not to control vapor diffusion in this case and much more about protecting the back of the metal panel.