The first layer to mud packing in between the tires. We used a mixture of cement, clay, sand, straw, borax and water. The borax is to stop any mold or mildew from developing and to stop bugs from eating or digging into the mud. We have plenty of rocks on our property and they are thermal mass as well so we decided to put rocks in the mud instead of cans or bottles like Earthship does.
We decided to start with this back hallway so we can work towards getting our solar system hooked up. Plus this is a good practice room. It won't be used like a living room is. And by the time we get to mudding the living rooms or our bed rooms we should be better at mudding the rooms. Not much science to doing this at the beginning.
This is a close up photo. Always wet the tires and the area where you are putting mud. This will help the mud stick to it.
This is the 4th or 5th layer of mud. We lost track after mudding for a while. We have found to apply this mud mixture you have to slap it on the wall. The mixture is similar to cob. A little more wet than a cob mixture would normally be. We wet the area first then get a mud ball in your hand. Flatten it a little bit in your hand then slap it on. It creates a kind of sound that tells you that it will stick. You need that force to get it to stick really good. When this dries it is very solid.
This gives you the idea of how far we have come with mudding the Systems Room.
After about 6 layers the tires are finally gone.
Mary Severin writes about her families embarkment on a learning adventure to build an Upcycled Home using Earthship Principals. To find out what these Principals are click on the Earthship Principals link above.