Qu'est-ce qui cause les fissures des linteaux dans les structures de maçonnerie?
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What causes lintel cracks in masonry structures?

What Causes Lintels to Crack in Masonry Structures? – A Comprehensive Guide by Maçonnerie Montréal

At Maçonnerie Montréal, we take great pride in empowering our customers with in-depth knowledge about masonry structures. One common concern we frequently address is understanding what causes lintels to crack in masonry structures.

Understanding Lintels

Lintels are integral structural components in masonry buildings. They are horizontal blocks that span the space or opening between two vertical supports. They bear the weight of the structure above the windows, doors, or other openings.

Common Causes of Cracking Lintels

Several factors can cause lintels in masonry structures to crack. They range from environmental impacts to design flaws.

Thermal Expansion and Contraction: Fluctuations in temperature can cause materials to expand and contract, leading to cracks in the lintels.

Design Flaws: Incorrect lintel size or improper installation can result in structural weaknesses, leading to cracks over time.

Age and Wear: Over time, lintels can deteriorate due to natural wear and tear, resulting in cracks.

Load Pressure: Excessive load from the structure above the lintel can lead to cracking if the lintel is not designed to withstand such weight.

Maçonnerie Montréal's Approach to Lintel Crack Repair

At Maçonnerie Montréal, we follow a systematic approach to lintel crack repair. We start with a thorough assessment, then move to repair or replacement, and finish with preventive measures.

Assessing the Damage

Our experts conduct an exhaustive assessment of the structure to identify the extent and cause of the crack.

Repair or Replacement

Depending on the severity of the crack, we either repair the lintel or recommend a complete replacement. In both cases, we ensure the highest standards of quality and durability.

Preventive Measures

Post-repair, we provide advice on preventive measures that can be taken to avoid the recurrence of such issues.

Why Choose Maçonnerie Montréal for Your Lintel Crack Repair Needs?

Choosing Maçonnerie Montréal means entrusting your masonry needs to a team of seasoned professionals who prioritize quality, durability, and customer satisfaction.


Cracked lintels in masonry structures can be caused by a variety of factors, including thermal expansion and contraction, design flaws, age and wear, and load pressure. At Maçonnerie Montréal, we're equipped with the knowledge, experience, and dedication to diagnose and repair these issues effectively.