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Stesso

Clean and Seal the Mold

2:40
11:06
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At 2:40 in

DIY Concrete Countertops For DUMMIES

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What happens here

After assembling the mold, thoroughly clean its interior surfaces. Use a vacuum to remove any sawdust or loose debris. Scrape off any adhesive residue, such as sticker remnants, with a razor blade. Finally, wipe down the entire surface with a degreaser like acetone and a clean rag to ensure it's completely free of oils and particles. Then, apply a bead of 100% silicone caulk along all internal seams of the mold. Use your finger, a caulk tool, or an old credit card to smooth the caulk and create a seamless, rounded edge. This ensures a smooth, uniform edge on the finished concrete slab and prevents concrete from leaking out.

Goal: Prepare the mold for concrete by cleaning thoroughly and sealing all seams to create rounded edges.

Tools and materials

  • 100% Silicone Caulk — Sealing mold seams and creating rounded edges
  • Acetone PSC — Degreasing and wiping surfaces
  • Caulk Tool / Credit Card — Smoothing caulk beads and creating rounded edges
  • Clean Rag — Applying degreaser and wiping surfaces
  • Gloves — Protecting hands from chemicals and caulk
  • Razor Blade — Scraping off adhesive residue
  • Vacuum — Removing dust and debris

What they say

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better than yogurt but it's hot hi boys and girls we've heard this before prep work as everything said don't be a dummy spend your time use a vacuum and suction out any of the dust particles that are still left in the mold from your dirty dirty workshop then take a razor blade and scrape off any of the glue any of the gunk in this position it's gonna be the sticker take rubbing alcohol or an acetone wipe the area down make sure there's no residue to make to really make this area clean come on there's no need to explain this then take a caulk and use the caulk to cover every seam every bead every joint that's there creating that rounded over edge the seamless rounded over edge that our concrete is gonna have now to really ensure the proper consistent round over edge we're gonna use an end of a credit card an old credit card that has that like three-eighths rounded over edge and scrape off all the excess caulk from the area this will ensure that everything is symmetrical and continual through the entire slab once that's done all I'm doing is using my finger and pulling away any of the leftover residue making sure that there's no voids left in the

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