The first coat of plaster seems to highlight both.
This is the first layer of plaster on our earth bricks. There is minimal cracking so we will use a fine sieve for the next layer and that may be our last.
Our mix for this layer is;
-4 parts clay.
-1 part aggregate; 1 part sand, 1 part pumice, 1 part fine pummice
-3 parts straw
All put through a 1/4 inch sieve pre-mixing.
