Roundhouse Update: Light Fixtures

We just finished installing light fixtures in our earthbag roundhouse. This step has taken a lot longer than anticipated. The porch light by the front door was easy to find since it is conventional looking. But we wanted something special inside for our three wall sconces because they’re more prominent. Two sconces, one on each … Read more

Straight Versus Zigzagging Barbed Wire

Do not zigzag barbed wire between courses of bags, because this will lessen its tensile strength. A load (stress) on the structure, such as a hurricane, earthquake or differential settling, would tend to pull the structure apart as the slack is taken out of the wire. Zigzagging the barbed wire would provide more attachment points, … Read more

Earthbag Greenhouse at Sandhill Farm

The year-round greenhouse at Sandhill Farm is built with sustainable materials, including earthbags for lower walls and light straw/clay in upper walls. Greenhouse segment starts at 1:12. Maybe someone from Sandhill Farm can chime in here and leave some comments. More info: Sandhill Farm Dancing Rabbit TV

Strong as an Army Bunker

Our roundhouse is nearly finished and so I wanted to share some results. The main impression is one of incredible fortresslike strength — massive walls with no sway. Our roundhouse and dome are probably the two strongest buildings I’ve ever worked on. Our earthbag dome, for instance, never budged as about 15 truckloads of soil … Read more

Interior Walls

Using earthbags for interior walls would take up too much space and so they’re generally not recommended for this purpose. Thinner interior walls are more efficient. The easiest solution is to frame interior walls with 2x4s or, for plumbing walls, 2x6s. But there are more sustainable alternatives. On some of my plans I use adobe, … Read more

Structural Mesh

Wrapping walls in mesh – starting under the first course of bags and going over the top of the bond beam – is a simple way to add a great deal of extra strength to your earthbag structure. Fishing net and plastic lath are ideal for wet climates. Galvanized wire lath or chicken wire is … Read more