What is efflorescence?

To effloresce means to burst into bloom; to blossom. Unfortunately, in the hardscaping industry, efflorescence is not such a beautiful process. In fact, it can be rather unsightly.

Efflorescence is a crystalline deposit of salts that can form when water is present in or on brick, concrete, stone, stucco or other building surfaces. It has a white or greyish tint and consists of salt deposits left behind when water evaporates. Sometimes this haze appears on stones prior to installing them, but it usually appears within a month or so after installation. Efflorescence is the reason why we always suggest waiting 1 year before sealing your patio, as you don’t want to trap the salts under the sealer.

Remember, efflorescence is a natural process. While it may be unattractive and frustrating to see on your newly installed patio, know that it is only temporary. And there are cleaners to help you speed the process, if you so desire.