[Greenbuilding] R12 for 3" of Roxul Comfortboard IS..

[Michael O'Brien]

Hi, Sacie—

Here are some photos of our chip 'n slip walls:

https://www.flickr.com/photos/mikeobrienpdx/albums/72157625195842336 <https://www.flickr.com/photos/mikeobrienpdx/albums/72157625195842336>

Best,

Mike

On Apr 30, 2016, at 2:12 PM, Sacie Lambertson <sacie.lambertson at gmail.com> wrote:

As I've been hitting hard the info on Roxul vs Zip Sheathing vs an interesting John Straube wall plan that is deceptively simple (mostly blown foam), I too am interested in the responses to using these materials. 

Not so much interested in Passiv as near net zero. 

Don't know what 'chip and slip' is though.

Sacie



On Sat, Apr 30, 2016 at 2:47 PM, Koehn Chris <chris at koehn.com <mailto:chris at koehn.com>> wrote:
Following this discussion with some interest. Beginning stages of designing a small home with the aim of achieving Passive House using (mostly) natural- or healthy- materials.
We built a house recently using 12” deep Larsen trusses with full “chip and slip” infill with clay plaster finishes. Great material, very labour intensive, dries slowly, not the highest insulative values (a problem with Passive House).
So we’re keen to experiment with Roxul board (or other?) for a chunk of the wall, maintaining a 4-6” layer of chip and slip, presumably interior, to reap the hygroscopic benefits of the clay.

Any thoughts or experiences with such a wall?

We’re on Vancouver Island, so pretty low Delta T (at least for Canada) but nearly as many heating degree days as colder climes back east.

Cheers,

Chris Koehn






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