GJ MacRae Foundation Repair

The Original Wetbasements Experts – Since 1975

Everything You Need to Know About Efflorescence

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Written and Edited By Gavin MacRae


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Owning a home comes with a long list of responsibilities. One of these responsibilities is ensuring that you regularly monitor your home for any changes to the structure. A common issue that homeowners are faced with is efflorescence on their homes. Keep reading to learn everything you need to know about efflorescence!

What is Efflorescence?

Efflorescence is a crystalline or white powdery substance that is often visible on the surface of your home whether it is concrete, brick, stucco, or even natural stone. These deposits occur when water touches the surface of your home and leaves behind salt deposits. 

Where Does Efflorescence Occur?

Efflorescence can occur on walls, floors, retaining walls, and other surfaces that are made of brick, stone, stucco, or concrete. This substance can also occur under the concrete sealer, which can be concerning. The most commonplace that efflorescence occurs is in a wet basement.

What Causes Efflorescence?

Efflorescence is caused by water and salt. The salt can come from the material that your home is composed of, the grout or cement that is used, from the soil, and even from the water itself.

How Can You Control Efflorescence?

The first step to controlling efflorescence is to find the cause. Efflorescence needs water and salt to form, so by identifying the source of the water and salt and making changes, you can rid your home of this pesky powder. Many times, the solution is to ensure the eavestroughs and downspouts are properly positioned and functioning. Other times, the grading and landscaping need to be examined and altered to deter water from gathering around the home. The good news? Ensuring that the above items are properly addressed is not only a way to prevent efflorescence, it is also a way to keep your foundation healthy and strong.

The GJ MacRae Difference

If you’re having issues with efflorescence in your home, call the team at GJ MacRae. We have been serving homes in the Greater Toronto Area for over 4 decades. Our team of experts will not only fix the surface issue, but we will also work with you to diagnose the route of the problem and keep your home safe and dry. Call us at 1-800-361-3108 or visit us online today to get started!

Gavin MacRae is a professional foundation repair and basement waterproofing expert with over 20 years of experience in the field. He has extensive knowledge about foundation issues such as settlement, and cracks as well as expertise in repair techniques. Gavin is also highly skilled in basement waterproofing using interior and exterior methods. He has worked with hundreds of homeowners to provide permanent solutions to foundation and basement problems.