This Instructable describes an innovative way to build walls using bamboo or wood saplings and bags of insulation. We’ll be using bamboo for this Instructable since it is rapidly renewable, low cost and readily available in many parts of the world. Let’s start with some background information to better understand what is involved. People often … Read more
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
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
From time to time we answer reader’s questions. Jeff: We are looking at building a home on acreage in central north Michigan. It is extremely cold in the wintertime where we are looking. Would an earthbag home insulated with rice hulls (using 10″ tube sandbags on exterior of earthbag walls) be sufficient for that kind … Read more
A reader asked if perlite is a good choice for building earthbag roundhouses. Perlite should work if you make some adaptations. It has excellent R-value and so, in my opinion, is well worth a little extra effort. In fact, it’s a top choice because of its R-value of 2.7 per inch. So 15″ would give … Read more
If you’ve been reading our blogs and websites, you’ll often see reference to scoria. Scoria, also known as lava rock, has numerous properties which make it a great building material. The key breakthrough for earthbag building was Kelly Hart’s house made with bags of scoria. His house stays comfortable year round in a very cold … Read more