L'efflorescence peut-elle apparaître sur les murs intérieurs en briques?
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Can efflorescence appear on interior brick walls?

Efflorescence on Interior Brick Walls: Unraveling the Mystery

Understanding Efflorescence

Efflorescence is a term that many might associate with exterior masonry structures. It's recognized by its distinct white, powdery deposits that can often be seen on bricks, stones, and concrete. This phenomenon occurs when soluble salts within the masonry rise to the surface, leaving behind crystalline deposits as the water evaporates.

Can Efflorescence Occur Indoors?

The simple answer is: Yes, it can. While efflorescence is commonly associated with external walls due to their direct exposure to the elements, it's entirely possible for it to appear on interior brick walls as well. Here's why:

1. Moisture is the Culprit

Where there's moisture, there's potential for efflorescence. Interior walls can become damp due to various reasons, such as plumbing leaks, poor ventilation, or even the migration of moisture from the exterior.

2. Construction Phase

Sometimes, if the bricks were wet during the construction phase and were not dried properly, it can lead to efflorescence appearing later when the moisture tries to escape.

3. Basement Walls

Basements are particularly susceptible due to their proximity to the ground, making them more prone to dampness and, subsequently, efflorescence.

Addressing the Issue

At Maçonnerie Montréal, we believe in a proactive approach:

1. Proper Diagnosis

Identifying the root cause of the moisture is paramount. It could be anything from a simple leak to more complex issues like groundwater intrusion.

2. Effective Solutions

Depending on the diagnosis, solutions might range from waterproofing treatments, improving ventilation, or addressing plumbing issues.

3. Preventive Measures

We recommend regular checks, especially after heavy rainfall or if there have been changes to the surrounding landscape, to ensure that the internal environment remains dry.

Why Choose Maçonnerie Montréal?

Efflorescence, while not harmful, can be a sign of underlying issues that need to be addressed. More than just a cosmetic concern, it speaks to the health of the building. At Maçonnerie Montréal, we combine our deep knowledge of masonry with state-of-the-art techniques to ensure that your structures remain not only beautiful but also healthy and robust.


Efflorescence on interior brick walls, though less common, is a reality. With the right knowledge and timely intervention, it can be effectively managed. Trust in Maçonnerie Montréal to guide you through every step, ensuring that your interiors remain as pristine as the day they were built,