Une mauvaise installation peut-elle entraîner des fissures de linteau?
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Can improper installation lead to lintel cracks?

Can Poor Installation Lead to Lintel Cracks? - An Expert Guide by Maçonnerie Montréal

At Maçonnerie Montréal, we pride ourselves on our extensive knowledge and experience in the field of masonry. Offering a range of services across Montreal, we are particularly proficient in lintel repair. In this article, we will explain how poor installation can lead to lintel cracks, emphasizing the importance of professional intervention in masonry services.

Understanding Lintels and Their Importance

Lintels, the horizontal blocks spanning the space or opening between two vertical supports, serve an essential structural role in every building. Found above doors and windows, these structures bear the weight of the wall above the opening and distribute it evenly across the supporting structures.

The Impact of Poor Installation on Lintel Integrity

Lintel installation requires meticulousness, precision, and proper techniques. A poorly installed lintel can fail to bear its intended weight, leading to stress and eventual cracks. Here are some factors that contribute to poor installation:

  • Inappropriate Material Selection: Different materials respond differently to environmental stresses. A subpar installation might use unsuitable materials for the lintel, leading to less resistance to factors like thermal expansion and load-bearing pressure.

  • Incorrect Load Calculation: Incorrect load calculation during installation could result in the lintel not being able to handle the pressure, leading to cracks over time.

  • Improper Fitting and Positioning: If the lintel is not fitted correctly or placed in an inappropriate position, it may fail to distribute the weight properly, leading to undue stress and eventual cracks.

  • Ignoring Expansion Joints: Expansion joints allow the safe movement of building materials due to temperature changes. Neglecting these in lintel installation can result in the building materials cracking due to thermal expansion and contraction.

Manifestations of Poorly Installed Lintels

Identifying a poorly installed lintel early can save you significant time, money, and safety risks. Here are some signs that your lintel may have been poorly installed:

  • Visible Cracks: This is the most obvious sign. Vertical or diagonal cracks appearing above the window or door frame indicate a failing lintel.

  • Bowing or Sagging Lintel: This could be a sign that the lintel is not able to bear the load.

  • Cracks in the Masonry: The stress from a failing lintel can cause cracks in the surrounding masonry.

  • Dampness or Leaks: If a lintel fails, it can lead to gaps where water can seep in, leading to damp patches or leaks.

The Importance of Professional Installation

Professional installation provides the expertise necessary to avoid poor lintel installation. At Maçonnerie Montréal, we ensure:

  • Correct Material Selection: We select the best material for the lintel based on the building and its environment.

  • Precise Load Calculation: Our professionals calculate the load that the lintel needs to bear, ensuring it can handle the pressure.

  • Proper Installation Techniques: Our masons are trained in the latest techniques to ensure a stable and secure lintel.

  • Expansion Joint Consideration: We account for the need for expansion joints during installation to allow for safe movement.

Trust Maçonnerie Montréal for Professional Lintel Installation

Trust Maçonnerie Montréal for professional lintel installation services that stand the test of time, preventing future cracks and guaranteeing your building's structural integrity.


Investing in professional installation services is essential for the longevity of your lintels and the overall structural integrity of your building. At Maçonnerie Montréal, we bring expertise, skills, and dedication to each project, ensuring your peace of mind and the safety of your building.