GOT WHITE SALT BUILD-UP (known as “EFFLORESCENCE” build-up) ON YOUR BRICK – STONE – CONCRETE -OR- MASONRY?
We Use Our EXCLUSIVE “SOFT WASH” Processes and Systems To Remove EFFLORESCENCE (White Salt) Build-up and Restore Your Brick, Stone, Concrete and Masonry … To Their PRISTINE Condition!
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Efflorescence Overview – What Is Efflorescence?
White Salt Build-up On Brick – Stone – Concrete & Masonry
Efflorescence (French for “to flower out”) is the migration of SALT to the surface of a porous material where it forms a coating of white salt stain. This typically occurs on brick, stone or concrete and leaves an uneven white coating of salt that stains the surface. The process usually occurs when the water that exists in the mortar between brick or mortar between stone during construction dissolves internal salts and the process of evaporation during curing migrates the salt to the surface where it dries leaving a white salt stain. This is called “primary efflorescence”. The process can also occur when salt water enters from the outside and then drying occurs, leaving the salt stain deposit on the surface. This is called “secondary efflorescence”.
Efflorescence is a cosmetic, aesthetic issue but (according to Wikipedia) “efflorescence may clog the pores of porous materials, resulting in the destruction of those materials by internal water pressure, as seen in the spalling of brick.”
Another problem occurs on concrete driveways, bridges and parking garages in which a saline solution from road salt is absorbed by concrete “where it can begin to dissolve cement stone, which is of primary structural importance… Where this process has taken hold, the structural integrity of… concrete… is at risk. This is a common traffic infrastructure and building maintenance concern. Secondary efflorescence is akin to osteoporosis of the concrete.”
The immediate and long range solutions are to remove the efflorescence white salt stain from the surface as it occurs. Various techniques of sealing have been tried but none to date are without consequences as bad or worse than the problems brought on by efflorescence.
SAMPLE EFFLORESCENCE (WHITE SALT) REMOVAL … BEFORE
Efflorescence on Stone Chimney
Many contractors will not attempt to remove efflorescence from a brick, stone or masonry structure because it is difficult, time consuming, costly and sometimes dangerous. Removal of this white salt stain requires a knowledge of the material on the surface, proper equipment including safety equipment, proper chemicals and how to handle them safely and efficiently and sometimes an investment in OSHA training to operate the heavy equipment necessary to gain access to the structure’s surface.
SAMPLE WHITE SALT (efflorescence) REMOVAL … DURING PROCESS
Process of Efflorescence Removal
Using safety gloves, safety glasses and plastic to protect nearby bushes, we apply a very strong chemical designed to soften and partially dissolve the salt stain on the surface. Upon contact, the efflorescence foams telling us that the chemical is working.
REMOVING … CLICK TO ENLARGE IMAGE
VIDEO OVERVIEW – DURING PROCESS
SAMPLE WHITE SALT (efflorescence) REMOVAL … AFTER PROCESS – RESULTS
This photo was taken the day after, when the chimney, mortar and stone had dried after first being pressure washed to remove the chemical and all traces of the efflorescence salt stain. As you can see, the chimney has been returned to its original beautiful state. In addition to becoming more attractive, there is also now no danger of the salt eating away at the cement in the mortar which can deteriorate and weaken the whole structure.
Caveat: Efflorescence may or may not return. If it does return, we will repeat this process.
REMOVED … CLICK TO ENLARGE IMAGE
VIDEO OVERVIEW – AFTER PROCESS – RESULTS
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