Cleaning Brick or Stone Surfaces Affected by Smoke Damage

Procedure - Alkaline Cleaning

  1. Remove dry soil with a HEPA vacuum and dusting brush.
  2. Using pump-up sprayer and your alkaline stone cleaner, spray a 3' x 3' area (start at the bottom and work your way up).
  3. Using a nylon brush, agitate the sprayed area.
  4. Rinse with clear water.


Procedure - Acid Wash

Acid washing will remove a microscopic layer of the brick/masonry facing, making it more vulnerable to moisture. It is recommend that a sealer be applied to any exterior masonry/brick after acid washing.


WARNING:  Never use muriatic acid on stone or masonry.  Acid will etch most stone/brick/masonry surfaces. Avoid uneven or prolonged contact because etching, uneven cleaning, or streaking can result.


  1. Prepare a diluted solution of your acid-based cleaner.
  2. Using a pump-up sprayer, spray a small area (no larger than 3' x 3'). Immediately lightly agitate the area.
  3. Rinse well with clean water

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