EFFLORESCENCE

A common problem with masonry is the appearance of efflorescence deposits on the surface of the masonry.  This issue occurs when salts and calcium from the stone, brick and mortar interact thus depositing a white chalk like substance on the surface.

You will need:

Muriatic Acid
A stiff brush
Water
Protectant Gloves
Eye Protection
A Vapor Mask

Next pour diluted Muriatic Acid on the effected areas

As you will see, the acid and water will begin to interact with the efflorescence causing a bubbling reaction that is similar to hydrogen peroxide.

Next agitate the application areas with a stiff brush.  Repeat process for stubborn areas.

Rinse well with water, being very cautious of the runoff.  Place old towels or other substance to collect excess runoff.

Make sure that the environment around in which you are working is protected from any excess spillage or run off of waste.  Muriatic Acid can be harmful to plants, grass and the environment.  Do not perform this task if you have not worked with chemicals before.  Read all labels and warnings before you begin.  Be familiar with your local, state and national EPA standards