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Is efflorescence a problem?

Ultimately, efflorescence itself isn’t dangerous. However, it can lead to potential moisture problems that can cause structural damage to building materials. That means if you notice efflorescence in the basement or on concrete and other structures, it’s important to take action.

What is the main cause of efflorescence?

CAUSES OF EFFLORESCENCE Simply stated, efflorescence occurs when water containing dissolved salts is brought to the surface of masonry, the water evaporates and the salts are left on the surface.

How long does it take for efflorescence to fade on concrete?

about 60 days

What causes efflorescence on stone?

Efflorescence is often found on natural stone surfaces, concrete surfaces, stucco and bricks. The deposits occur when moisture on the stone’s surface evaporates and leaves behind salts & minerals. Surprising to some, the moisture usually comes from inside the stone, and brings salts & minerals to the surface.

How do you get efflorescence out of colored concrete?

Luckily efflorescence is one of the easier stains to clean, especially if new. Dry brushing with water and a stiff brush can often remove light stains. Heavier, well-established efflorescence from salts is generally removed by using muriatic acid in a solution: 1 part acid.

How do you prevent efflorescence in bricks?

Mixing-water used for mortar or concrete may be taken from a natural source which has been in contact with a sulfate-bearing soil. In this instance, efflorescence can be reduced by using a low water-cement ratio mix for concreting. Clay products such as building bricks and face bricks may also contain soluble salts.