I’m a fan of coating the back of wood-based panels with housepaint, to protect them from moisture. Is the same practice recommended for paper supports? I’m thinking specifically of paper supports which have a ground on the front for metalpoint. I understand the weight of the paper is a consideration, and a very thin paper likely couldn’t accept any paint without bleed through or warping. But would a light coating of acrylic paint on, let’s say, a 90 lb watermedia paper, and a more substantial layer of paint on a 300 lb paper, be a good idea?
Thanks, Koo Schadler
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