We are building our home and have just finished plastering. How many coats of primer and top coat are required for raw plaster?
1 Answers
One even heavy coat of wallboard primer is needed to seal up the pores and neutralize the ph. If the primer is sprayed I recommend backrolling with a lamb's wool roller to help distribute the primer evenly and push it into the pores.
For the finish paint, 2 coats is a good idea. The same application method can be used.
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