How to Remove Efflorescence From Bluestone

Efflorescence is a white or colored crystalline deposit that forms on the surface of concrete, brick, and other masonry materials. It is caused by the evaporation of water that contains dissolved salts. As the water evaporates, the salts are left behind on the surface.

How to Remove Efflorescence:

- Sweep or scrub the surface to remove any loose or flaky deposits.

- Rinse the surface with clean water to remove any remaining water-soluble salts.

- Apply a commercial efflorescence remover according to the manufacturer's instructions.

- Rinse the surface again with clean water and allow it to dry completely.

If the efflorescence is severe, you may need to repeat the above steps several times.

How to Prevent Efflorescence:

- Prevent water from accumulating on the surface of masonry materials by providing adequate drainage.

- Add a waterproofing sealant to the surface of masonry materials before they are exposed to water.

- Use a concrete mix that is resistant to efflorescence.

Note

In cases of chronic Efflorescence, water may be migrating up inside a walls core from ground beneath rather than on a surfaces as rain or condensation and may require further evaluation / repairs to stop water intrusion at ground levels and / or below.