How to seal concrete floors with PVA

Written by paul massey
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How to seal concrete floors with PVA
Seal concrete floors with PVA before painting. (7mirror/iStock/Getty Images)

Polyvinyl acetate -- or PVA -- is a versatile chemical compound with a wide range of uses. It is a fast-drying, water-thinned bonding agent that is most commonly used as a sealer before painting a concrete floor with enamel or epoxy-based paints. PVA is environmentally safe and meets UK environmental standards, making it the preferred concrete sealer for home and commercial use.

Skill level:

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Things you need

  • Scraper or wire brush
  • Broom
  • Vacuum cleaner
  • Trisodium phosphate cleaner (TSP)
  • Bucket
  • Scrubbing brush
  • Polyvinyl acetate
  • Wide paintbrush
  • Paint roller and roller pan

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  1. 1

    Clear the floor area of any equipment or furnishings.

  2. 2

    Remove any debris from the concrete surface with a scraper or wire brush.

  3. 3

    Sweep and vacuum thoroughly to clean the floor area.

  4. 4

    Apply a solution of trisodium phosphate cleaner, mixed according to the manufacturer's directions, and use a scrub brush to remove any oil, grease or other stains from the concrete surface. Rinse the floor thoroughly with clean water.

  5. 5

    Fill a roller pan with PVA, full-strength or diluted according the manufacturer's specifications for your application, and use a paint roller to coat the concrete surface with an even layer in overlapping strokes. Cut-in the PVA solution next to any steps or walls where the roller does not reach.

  6. 6

    Allow the floor to dry for at least two to three hours. If you're applying a second coat of PVA, allow the area to dry for six to 12 hours between coats. The floor should cure for a minimum of 24 hours before replacing equipment or furnishings.

Tips and warnings

  • Clean up with warm water.
  • PVA concrete floor sealer is best applied when the concrete floor temperature is 15C to 20C.

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