Guest User
12/5/2008
My contractor says he can only put 1 1/2 inch of ISO b/c of "clamp" down issues associated with screwing the mental roof down and causing valley's at the screw point. What are some "usual" insulation methods to get a higher R value?
Guest User
12/6/2008
The best method and what we usually do is to put 1/2 inch OSB over the ISO board. That will sandwich your ISO board between two solid substrates. We have done it up to 4" and it works great. [email protected]
Todd Miller
Classic Products, Inc.
12/6/2008
Thanks Wade. That is good advice.
Guest User
12/14/2008
I was informed a 5/8" substrate was required for a screw application. Is 1/2" thick enough?
Find a Contractor

Get Started Today

Take the first step to increasing the value of your home with a great looking, durable, fire resistant and energy efficient metal roof. Browse our list of qualified MRA Member Roofing Contractors in your area for a free consultation and estimate.