RE: [SB-r-us] Re: Strawbale Wrap
- Fantastic advice Laren. As much as we love eco-friendly methods, we have found that there are certain applications to which they simply are not practical.
--- Original Message ---
From: LarenCorie <larencorie@...>
Sent: April 21, 2013 13-04-21
Subject: [SB-r-us] Re: Strawbale Wrap
Posted by: "jill" greenbiobean@...
> Hi, We are hoping to retrofit an existing poorly designedHi Jill;
> house in one of the driest locations in Montana with shed
> overhangs and a strawbale wrap. We are still very preliminary
> but are seeking some critical thinking about our ideas.
I am a bit hesitant to recommend an alternative, on a
strawbale list, but, it would seem that your strawbale
solution would require a rubble trench foundation and
grade beam. For less work and cost, you could either
fur out your walls, or wrap them in recycled foam to
achieve about as high Rvalue, without needing additional
foundation, or the building of a much larger roof area.
You also would not need to move your windows outward.
> On the interior we would like to fill the existing 2x4I recommend not tearing off your interior finish, and blowing
> space with light straw of clay slip and then plaster.
the wall cavities with dense packed cellulose. That will get
you a better insulation value, and reduce your labor to a
fraction of what it would be with the straw clay. You can
still use a natural plaster finish.
> All of the plumbing and electrical would remain in theThe pros and cons of that are similar, regardless.
> existing stud walls.
> Solar gain to the south will be consideredBuild a low-mass sunspace (sunporch) over your existing
South wall, so that the wall will not require super-insulation
(blow it full of cellulose). Between doing that, and doing the
insulation/sealing upgrade you could reduce your heating
loads to very tiny. How big is the house? Is it single
story? What type of foundation/floor?
Natural Solar Building Design and
Solar Heating/Natural Cooling/Energy
Efficiency Consultation Since 1975
www.ThermalAttic.com (many new
photos and pages, coming soon)
Read my Solar house design articles in:
-Energy Self-Sufficiency Newsletter-
Home base-LittleHouses YahooGroup
Founder-WoodGas - Power from wood