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Damaged waterproofing flashing: what are the solutions? (2024 Guide)

Damaged Flashing: What Are the Solutions? (2024 Guide)

Are you seeking answers to your questions about damaged flashing? You've come to the right place. At Maçonnerie Montréal, we're here to provide you with in-depth insights and practical solutions to address this common issue in masonry. In this article, we'll delve into what flashing is, why it can become damaged, and what the best repair options are. If you reside in Montreal, Laval, Longueuil, on the South Shore, or the North Shore, this article will be particularly valuable to you.

What Is Flashing?

Flashing is an essential but often overlooked component of masonry, crucial for protecting your building from water infiltration. It's a waterproof material strip installed at areas where two surfaces meet, such as between a brick wall and a roof, or around chimneys, windows, and doors. Flashing prevents rainwater from seeping inside the structure, which could lead to significant damage over time.

Why Do Flashings Become Damaged?

Several factors can contribute to flashing damage, including:

  1. Aging: Over the years, flashing materials can deteriorate due to exposure to weather elements and the sun's UV rays.

  2. Structural Movements: Building movements caused by seasonal freezing and thawing, as well as earthquakes, can result in cracks in the flashing.

  3. Poor Initial Installation: If the flashing wasn't correctly installed from the start, it's more likely to become faulty sooner.

  4. Normal Wear and Tear: Wear and tear due to constant exposure to the elements can also lead to damage over time.

Solutions for Damaged Flashings

Now that we understand why flashings can become damaged, let's explore the available solutions to address this issue.

  1. Flashing Repair: If the damage isn't too severe, it's often possible to repair the existing flashing. This may involve filling cracks, replacing damaged sections, or applying a waterproof coating.

  2. Partial Replacement: In some cases, it may be preferable to replace only the damaged part of the flashing rather than replacing it entirely. This can be a more cost-effective option.

  3. Complete Replacement: If the flashing is too damaged to be effectively repaired, a complete replacement is necessary. This involves completely removing the existing flashing and installing a new one.

  4. Enhancing Waterproofing: In addition to repairing or replacing the flashing, it may be wise to consider waterproofing improvements for your building to prevent future issues. This can include installing additional waterproof membranes or adding waterproof supports around vulnerable areas.

Why Choose Maçonnerie Montréal for Your Flashing Repair Needs?

At Maçonnerie Montréal, we take pride in our masonry expertise and our commitment to customer satisfaction. Here's why we're the ideal choice for flashing repair in the Montreal area:

  • Experience: Our team of experienced masons has in-depth knowledge of flashings and their repair.

  • Quality Materials: We use only high-quality materials to ensure the durability of our repairs.

  • Personalized Service: Every project is unique, which is why we offer customized solutions to meet your specific needs.

  • Punctuality: We understand the importance of meeting deadlines, and we strive to complete every project within the agreed-upon timeframes.

  • Warranty: We provide a warranty on our flashing repair work, giving you the peace of mind you deserve.


In conclusion, damaged flashing can cause significant water infiltration problems in your building. It's essential to take steps to address this issue promptly. At Maçonnerie Montréal, we're here to offer high-quality flashing repair solutions in Montreal, Laval, Longueuil, on the South Shore, and the North Shore. Feel free to contact us for a free assessment of your flashing repair needs. We're here to help you protect your real estate investment.

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