The scratch coat mortar from Mapei is a premixed blend of sand and Portland cement. It is designed to be used with metal lath over plywood substrates, for indoor use only. The dry-thinset mortar must be mixed with water. The product is grey in color and comes in a 22.7 kg package.
Premixed blend of 2 parts sand to 1 part Portland-cement
To be used with metal lath over plywood substrates
Use in preparation for interior residential ceramic tile and stone installations