The big blizzard of ‘09 temporarily put the kibosh on construction, but we’re back up and running. The Hemcrete forms have come off of the first floor, Serious Materials windows have arrived, and the roof is moving forward, with horse drawn, local, sustainably harvested hemlock fascia boards from Mountain Works installed this week.
If you’re interested in volunteering for the Nauhaus Prototype Project, please contact Billy.
Click here to view the entire Nauhaus Prototype Construction Chronology.
Wall with Custom Hemcrete Forms
Wall after Hemcrete Forms are Removed
Serious Materials Windows Have Arrived
Serious Materials Windows Waiting for Installation
Head and Jamb of Hemcrete Window Opening
Jamb and Sill of Hemcrete Window Opening
Sustainably Harvested Hemlock Fascia
Closeup of Future Patio Connection at West Wall
Nauhaus Prototype as of December 31, 2009
Tags: fascia, serious materials, Windows
Hi, I was wondering what your cost was for the hemicrete was. I used durisol in my project and was wondering how the two wall systems compared.
Thank you, Adrien
Adrien,
For info on cost, you should contact our distributor, Hemp Technologies. It’s a new material in the US, so cost are fluctuating. It’s not an inexpensive system at this point. However, we couldn’t have gotten the performance that we require with Durisol, as I’m sure you know also not an inexpensive wall system. The theoretical R-value of our hempcrete is about 2.5/inch. Durisol is much lower. Also, since Durisol is essentially an insulated concrete form, that system uses a huge amount of concrete. Hempcrete is about 85% hemp and the majority of the binder is lime. I think heavy mass exterior walls work well in some climates, but not ours. Here, insulation on the exterior, with mass on the interior is our approach of choice.
Clarke