Comment puis-je éviter que les linteaux ne se fissurent?
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How can I prevent lintels from cracking?

How Can I Prevent Lintels from Cracking? – A Comprehensive Guide by Maçonnerie Montréal

As the leading masonry company, Maçonnerie Montréal, we've often come across queries concerning lintel maintenance and prevention of cracking. In this in-depth guide, we aim to offer an extensive explanation on how to prevent lintels from cracking.

Understanding Lintels and Their Role in Masonry Structures

Lintels are critical components of any masonry structure, serving as horizontal supports above windows, doors, and other openings. Their stability directly impacts the integrity and safety of a building. It's crucial to understand their role to implement appropriate measures for preventing cracks.

The Importance of Correct Installation

The first step to prevent lintel cracks is ensuring correct installation. This process should account for: Material Selection: The lintel material should be strong and suitable for the specific type of construction. Appropriate Sizing: The lintel must be of appropriate length and breadth, extending beyond the opening's width. Load Calculation: The lintel should be capable of bearing the load of the structure above it. Proper Placement: It should be placed evenly and horizontally over the opening. Seamless Integration: It must be adequately integrated into the masonry work to distribute loads evenly.

Regular Maintenance and Inspection

Performing regular maintenance and inspections is an excellent way to prevent lintel cracking. Check for visible signs of damage such as small cracks, displacement, or signs of rust in steel lintels. Regular waterproofing can also prevent water damage and the associated risks of cracks.

Moisture Control

Moisture is a significant cause of masonry damage. It can weaken the mortar and cause corrosion in steel lintels, leading to cracks. Effective moisture control methods such as adequate drainage, sealing of cracks, and use of water-resistant materials can help in prevention.

Temperature and Environmental Factors

Temperature fluctuations and environmental factors can cause the expansion and contraction of lintels, leading to cracks. Incorporating flexible joints and suitable materials can mitigate these effects.

Addressing Minor Damages Promptly

Addressing minor damages promptly can prevent them from turning into major cracks. Timely professional intervention can correct minor issues and extend the lifespan of the lintel.


Proper care and preventive measures can significantly reduce the risk of lintel cracking. At Maçonnerie Montréal, we strive to provide the best masonry services in Montreal, including high-quality lintel installation and repair. We are dedicated to delivering exceptional craftsmanship and advice to protect your masonry structures.