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I've cut out some tempered pegboard into 11" circles and I need them to be completely sealed so water won't destroy them for at least 6-8 months. They will be the base in an eBucket veggie planter (Veggie Gardening Forum) that will be filled with potting soil that stays consistently damp.
I bought a gallon of Drylock that I was told will waterproof them adequately, if I dip each circle and hang to dry. Please advise proper technique for dipping and drying them that will ensure the peg holes remain open after several coats (2-3) are applied, and that all surfaces are covered.
I considered filling a large enough container with the Drylock and just mashing the "cookie" down until the Drylock was forced up through the peg holes. Then, how should I stand it, or hang it up, or lay it down to drip dry so there's no pinhole created? The slightest pinhole anywhere in the finish would allow water to get in and cause the "cookie" to crumble -- literally!
I thought about hanging them on a paperclip to drip dry, but anything through a peghole wouldn't allow a watertight seal at that point. I could tie a thin thread through one peghole before I dip it, then hang it up to drip dry, and Once it did, just snip the thread off. I also considered laying them down flat on a couple nails coming up through a piece of wood. There'd be that pinhole, where the nailtips touch the "cookie," but then I could go over that area with the roller.
You might want to consider using Thompson's water seal instead. It's meant to soak into wood to form a protective barrier to moisture. It won't make any difference how you hang it to dry since it soaks in and doesn't sit on the surface. Just make sure you soak the disks long enough to penetrate well. The big box stores the HD or Lw"S sell trashcans large enough to fit your cut outs.