Build & Install Concrete Countertop
At 16:26 in
DIY Under Staircase Makeover | Closet to Pantry
What happens here
Build a mold for the concrete countertop using melamine, ensuring it is perfectly sealed and smooth. Degrease the mold with rubbing alcohol, apply a light coat of automotive wax, and then apply a liberal amount of silicone into all joints and edges, spreading it with a caulk tool to create desired bevels. Mix fiber-reinforced concrete (e.g., Quikrete Pro) to an oatmeal-like consistency, using approximately 3.5 80-lb bags for a typical counter. Pour the concrete into the mold, screed it level, and then trowel for a smooth finish. Allow the concrete to cure for at least three days. Once cured, remove the mold, fill any exposed air bubbles with a Portland cement slurry, wet sand the surface, and apply several coats of concrete sealer for protection against staining. Carefully transport and install the finished concrete countertop onto the base cabinets.
Goal: Construct a melamine mold, mix and pour fiber-reinforced concrete, cure, finish, and seal a custom concrete countertop for the bar area.
Tools and materials
- Automotive Wax
- Caulk Gun
- Caulk Tool
- Concrete Trowel
- Gloves
- Melamine Sheets
- Respirator
- Rubbing Alcohol
- Safety Glasses
- Screed Board
- Concrete Sealer Unspecified
- Portland Cement Quikrete
- Silicone Sealant Unspecified
- Water Unspecified
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