For this project, I joined the crew of Living Walls, a Portland-based earth plaster company, led by Joshua Klyber. We did a lime plaster system on the outside and earth plaster with aliz on the interior. And we had a lot of fun! This post will focus on the lime plaster portion and my next will cover the earth plaster work. Enjoy!
The Light Straw-Clay walls to be covered.
Base coat of lime goes up
This finish is at minimum a seven-pass system. First, we prime or lathe all windows edges, corners and other expanses of wood. Then we apply the rough base coat of lime plaster which has a lot of gravel. Next we press the plaster with a wood trowel to compact the lime as it dries. Then we score the surface with a small rake or scarifier. Then we come around again with a finish coat, no gravel in it this time. We follow again with a hard-packing motion with a wood trowel. Then we brush all the loose sand from the surface. Finally we apply a lime wash to give the surface color, actually two coats. So in all, we have come around to every square inch of this exterior wall surface nine times. Labor intense, no joke!