I know you're just itching to find out how to clean it up.Efflorescence Removal From A Basement Floor

Efflorescence is defined as the loss of water of crystallization from a hydrated salt into the atmosphere upon exposure to air. To explain it in simpler terms, it’s when evaporated salts and other minerals from curing concrete develop into a powder-like substance due to high moisture in the air. It looks much worse than it actually is, as the structure of the concrete floor isn’t damaged at all. The streaky-looking white stains tend to stay on the concrete though, and if left for a long period of time will become harder to remove. Read on to learn how to remove efflorescence from a concrete basement floor.

It's not very pleasant to look at.Materials That You Will Need:

  • Sponge
  • Towel
  • Safety Goggles
  • Wire Brush
  • Nylon Scrub Brush
  • 2 Plastic Buckets and Water
  • Rubber Gloves
  • Protective Clothing
  • 1/2 Cup Trisodium Phosphate
  • Stir Stick

1. Scrub

  • Wear protective clothing like a long-sleeved shirt and long pants as well as safety goggles before you begin.
  • Loosen the efflorescence on the concrete floor by scrubbing at it with a wire brush.

2. Apply Trisodium Phosphate

  • Fill the first bucket with warm water and add 1/2 cup of trisodium phosphate, mixing it well with a stir stick.
  • With a nylon scrub brush and the cleansing solution, scrub again to remove more of the remaining efflorescence from the floor.
  • Fill the other bucket with warm water and use it and a sponge to wipe the remaining trisodium phosphate from the concrete floor.

3. Wipe

  • Using a towel, wipe away the water from the floor and let dry. You have successfully removed efflorescence from a concrete floor!


  • You can use the same steps listed above to remove efflorescence from concrete basement walls as well.

Armed with the knowledge of how to remove efflorescence from a basement floor you no longer have to fear that powdery residue! If you would like some help with this, though, call Home Painters Toronto! Contact us NOW at 416-494-9095 or email Brian@HomePaintersToronto.com.