Won t earthen renders wash away?
Earthen renders have been used for a very long time. There are many examples from around the world of earthen renders enjoying a century or more of hanging on. They are available to everyone. They are ideal for owner-builders everywhere. Every soil has its own qualities and needs experimentation to find the best recipes and combinations. The use of cement certainly adds stiffness to a rendered wall. If a crack appears in our earthen wall it can be simply repaired with the same earth, re-creating a homogenous wall. Repairing cement renders is not as easy and involves chemical use. An important part of the building design is to protect the walls with a good roof and eaves but this is not so much of a problem if you live in a low-rainfall area.