What is used to finish walls and ceilings in a domed or vaulted structure?
Usually it is recommended that a mix of about one third clay with the rest sand is best for an earthen plaster, because the straight clay has a tendency to expand or shrink, depending on its moisture content and the sand tends to stabilize this. A finish coat of a lime plaster will produce a more durable finish. I have also used papercrete to plaster the interior of an earthbag dome. Q: I LOVE the idea of earthbag housing but I come from a wet country (Southern New Zealand) and also don’t like concrete. How do I make an exterior surface that will stand up to wet conditions without using concrete? Do you need chicken wire when you plaster your house or will the baling twine be enough? Would old fishing net do the job? A: You could use an earthen plaster stabilized with emulsified asphalt or you could use a lime plaster…or both. For a dome that might receive lots of rain, you might want to first cover the bags with plastic sheeting before the plaster. In this case you would definitely
