Vetiver/Clay Follow-up Report

I’m real happy with how the sample vetiver/clay block and earthbag turned out. This follow-up report summarizes some of the pros and cons. You can read the first report here. The block dried in a few days, but the mix in the bag was slow drying (it took about 2-3 times longer to dry) and … Read more

Halcyon Times Dome Home

“Three long months… 2,000 sandbags, 4,000 nails for closing the bags, 90 cubic yards of lava rock, 4 miles of barbed wire, -40 lbs. of combined weight-loss & 37 cans of Cattle Drive Chili… we have completed construction of our dome home.” Halcyon Times blog Note: They used scoria (lava rock) as fill material.

Experiments with Light Clay Insulation

Patti Stouter has been running a series of very interesting, even surprising, experiments with various materials that might be used to insulate earthbag walls. She has focused her attention on light-weight natural or recycled materials that can be bound together with a clay slip. She devised a test apparatus to measure how well the materials … Read more

Instructable: Insulated Earthbag Foundations for Yurts

This Instructable includes complete step-by-step instructions on how to make an insulated earthbag foundation. You can use the same process to make insulated foundations for any type of structure – straw bale, earthbag, cordwood, etc. Yurts or gers are very efficient and practical in harsh, cold climates, as evidenced by centuries of use in Mongolia. … Read more

Instructable: How to Build an Insulated Earthbag House

Energy performance on most buildings can be improved with insulation, including those made of earth such as adobe and earthbag structures. Although most earthen structures are located in hot, dry climates, there is increasing demand for low-cost, eco-friendly earth building techniques in cold climates. This article explores four innovative methods for insulating earthbag buildings, which … Read more

$220,000 Affordable Housing

I almost jumped out of my chair when I read about this ‘affordable housing’ project in Alaska. The estimated $220,000 cost for this home is “less than half of the cost of new homes recently built in the village.” It has 900 sq. ft. conditioned space, 1080 sq. ft. total. (That’s about $204/sq. ft.) I … Read more