Shop tip du jour:
Need to waterproof your silkscreen washout room? Line the walls with 4x8’ sheets of coroplast.
It’s a corrugated plastic board often used for signs. It’s cheap, can be cut easily with a utility knife, is easy to install alone, and cleans up nicely.
Look for it at your local plastics or sign-supply shop, then pick up a box of stainless deck screws and finishing washers and you’re good to go!