What is the whitish deposit I see on some paver installations?

You are probably referring to EFFLORESCENCE, a natural and common occurrence in concrete and brick products. Efflorescence is the result of natural salts in the materials used in production migrating to the surface of the pavers. This is not a defect nor harmful to the pavers, and will usually weather away with time. Although it is best to allow a year or more for efflorescence to weather away, if you don’t want to wait for it to weather away, Techniseal® offers an excellent cleaning product to remove it. Do not use efflorescence cleaners repeatedly. Once the pavers are cleaned, it is recommended that they be sealed.

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