0 Helpful?

How do published commercial and residential code requirements for combinations of continuous insulation and stud cavity insulation relate to in-wall condensation concerns?

The 2012 IECC includes minimum requirements for continuous insulation in combination with stud cavity insulation for wood stud walls. The requirements for these combinations differ between commercial and residential buildings. The required R values for continuous insulation are higher for residential buildings than for commercial. Considering cold climate applications, how do these requirements relate to in-wall condensation concerns?

Asked by user-198087
Posted May 13, 2014 2:16 PM ET

Tags:

1 Answer

Select your preferred way to display the comments and click "Save settings" to activate your changes.
1.

Albert,
Q. "Considering cold climate applications, how do these requirements relate to in-wall condensation concerns?"

A. They don't. Following minimum code requirements is no guarantee that you won't have a wet wall. These are minimum requirements, not optimal recommendations. To stay out of trouble, you sometimes have to exceed minimum code requirements for minimum foam thickness.

For more information, see Calculating the Minimum Thickness of Rigid Foam Sheathing.

Answered by user-756436
Posted May 13, 2014 3:03 PM ET

Other Questions in Energy efficiency and durability

SIP roof issues

In General questions | Asked by Matt Melton | Feb 17, 17

How do I insulate an already framed concrete wall?

In Energy efficiency and durability | Asked by Scott Thompson | Feb 10, 17

How to get notifications from comments

In General questions | Asked by Gerald Pehl | Feb 19, 17

Sealing under-layers of built-up exterior foam panel insulation

In Green building techniques | Asked by Gerald Pehl | Feb 19, 17

Passive house exterior door for reasonable price?

In Green products and materials | Asked by Matthew Michaud | Feb 4, 13
Register for a free account and join the conversation


Get a free account and join the conversation!
Become a GBA PRO!