This topic has been closed by the administrator. Comments are no longer accepted.
Some metal roofing , when put directly over wood substraite evenwhen regular underlayment doesent give the desired class A fire rateing. Tell me what underlayment products are there that A contracter can lay down on bare wood that will give the desired class A rateing to the metal roofing?
11/30/2004
Or copy this URL: https://www.metalroofing.com/spirit/comment/4713/find/