This can’t always be done, but there are a few key considerations you must pay attention to if Efflorescence is a concern: The best way to manage Efflorescence is to try to prevent it from happening in the first place. How do you prevent Efflorescence on a Stone Wall? Make sure to always test the clean in an inconspicuous area first to make sure the results are as intended. Because Natural Stone can be made up of many different types of minerals itself, it is recommended that you confirm with the manufacturer of your stone veneer which cleaner will best suit your needs. Most Efflorescence can be cleaned with specialized Efflorescence cleaners, which are designed to attach the salts and minerals that often make up Efflorescence. How do you remove Efflorescence from Stone Veneer? So while at first it my appear as though the stone is leaching, in fact the stone is acting as a membrane, and the minerals and salts are traveling through it from the substrate. When the moisture fully dries, voila you have efflorescent salts and minerals on the face of the stone.As the sun heats the surface of the stone, minerals travel through to the face of the stone from the back of the thinset.The Sun heats up various parts of the stone application, essentially drying and baking the moisture out of the setting bed.Rain water and the elements saturate the stone veneer application.These cementitious materials (substrate and thinset) all contain various amounts of sand, silica, and lime, along with other trace minerals. It is adhered using a polymer modified thinset. Stone Veneer is selected for an Exterior Application and is adhered to a cementicious substrate, be it CMU, brick, concrete board, or cast-in-place concrete.If you’ve ever seen white residue on the face of a stone veneer application, be it 100 years old or brand new, 9 times out of 10 it’s Efflorescence.Įfflorescence is a chemical process that occurs when cementitious materials, such as cement block, brick, or even thinset or grout come into contact with moisture for extended periods of time, then come into contact with the hot sun, resulting in a white residue on the surface of your stone veneer application. If you’ve been in the industry as long as we have at Norstone, then you will have no doubt heard about Efflorescence at least a handful of times over the years. Understanding Efflorescence on Stone Veneer
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