Exterior Rigid Insulation and Siding
Hi,
I recently completed a single family home in Va with 6" stud walls (cellulose) and exterior rigid insulation. I wanted to have 2" minimum exterior rigid, but the contractor pointed out that the literature on the specified siding (Hardi-Plank) only supported up to 1" rigid insulation. They also did not seem to support a rainscreen detail of any type when rigid insulation was used.
On the phone, the tech support would say that 2" rigid w/ rainscreen was compatible with Hardi-Plank, but the lack of literature in the installation instructions etc was troubling, especially as it related to maintaining any warranties.
Has anyone had any experience with 2"+ of exterior rigid insulation installed with exterior cement board or siding in a rainscreen configuration? Were you able to get literature from the siding manufacturer that indicated that type of installation was acceptable, and maintained warranty?
Asked by Grayson Jordan
Posted Fri, 02/03/2012 - 08:33
Posted Fri, 02/03/2012 - 08:33
Yahoo
Technorati
Google
Facebook
Delicious
Digg
StumbleUpon
RedditOther Questions in Green building techniques
In Building Code Questions | Asked by michael maines | May 23, 12
In Energy efficiency and durability | Asked by Victor Burgos | May 23, 12
In Energy efficiency and durability | Asked by David Slade | May 21, 12
In General questions | Asked by Robert Hronek | May 23, 12
In General questions | Asked by Holger Herrmann | May 23, 12
Grayson,
Several people have raised this question on our Q&A pages recently. The short answer is, Yes -- you can install Hardie siding on furring strips screwed through 2 inches or more of rigid foam.
Here are some links:
Can I really use 2" of rigid insulation under fiber cement siding?
Anyone back-vented Hardie lap siding over exterior insulation?
Should you use furring strips under Hardie siding?
Posted Fri, 02/03/2012 - 09:24