Tag: efflorescence

  • Removing Efflorescence from Concrete

    Removing Efflorescence from Concrete

    What is that white substance on your concrete? Usually white in color, efflorescence is a discoloration caused by crystalline deposits of salts on masonary, stucco and concrete surfaces. These deposits often contain compounds such as calcium, sodium and potassium hydroxides or carbonates, bicarbonates, chlorides, and sulfates of calcium and magnesium. These substances typically originate as […]

  • Efflorescence: What Causes it and How do You Remove it?

    Efflorescence: What Causes it and How do You Remove it?

    by Joe Nasvik, based upon an interview with Stan Stratton, Director of Technology Development, L.M. Scofield Company What Causes Efflorescence Efflorescence occurs with all concrete and is the most frequent problem that concrete contractors face with colored concrete. Owners don’t care about “plain” concrete, but colored concrete is another matter. They complain that their contractor […]