Cracks above window lintels are not just cosmetic issues; they can be a sign of serious underlying structural problems. Ignoring these cracks can lead to more extensive damage to your home or building, increasing repair costs and compromising safety. In this blog, we will discuss why it’s crucial to address cracks above your window lintels as soon as they appear, what causes them, and the potential consequences of neglecting them.
Common Causes of Cracks Above Window Lintels
Understanding what causes these cracks is key to knowing why they shouldn’t be ignored. Here are some common causes:
Structural Shifting
Buildings naturally settle over time, and this can cause small shifts in the structure. When the foundation shifts, it can lead to cracks above lintels.
Weathering and Water Damage
Exposure to moisture and temperature changes, especially in cities like NYC, can cause materials to expand and contract. This repeated expansion and contraction can weaken the lintel and cause cracks.
Poor Lintel Installation
If the lintel was not installed correctly, it might not support the load properly, leading to cracks as the wall above the window begins to sag.
Corrosion in Steel Lintels
Steel lintels are prone to rust when exposed to water over time. The rust can cause the steel to expand, leading to cracks in the surrounding masonry.
Heavy Loads
Windows on upper floors may bear extra weight from the structure above. If the load exceeds the lintel’s capacity, cracks can start to appear above the window.
Why You Should Never Ignore These Cracks
Ignoring cracks above window lintels can lead to various serious problems. Below are the reasons why you should act quickly:
Worsening Structural Damage
Cracks often indicate that the lintel is no longer providing adequate support. Over time, this can lead to sagging walls or windows. If left unchecked, these cracks will grow larger, potentially causing structural failure.
Water Infiltration
Cracks allow water to seep into your walls. Over time, moisture buildup can lead to mold growth, rotting wood, and even cause interior wall damage. In cities like NYC, where rain and snow are common, this can happen quickly.
Increased Repair Costs
The longer you ignore the cracks, the more extensive the repairs will be. What starts as a small crack may eventually require significant repairs like full lintel replacement or even reconstruction of the affected area.
Decreased Property Value
Visible cracks can lower the curb appeal and market value of your property. Potential buyers may see cracks as a red flag and either negotiate a lower price or back out of the deal entirely.
Risk to Safety
Most importantly, neglected lintel cracks can lead to severe safety hazards. If the lintel fails, the structure above could collapse, putting the occupants at risk.
Signs You Should Watch For
It’s essential to spot the early warning signs of lintel failure to prevent serious issues. Here are some indicators:
- Diagonal Cracks extending from the corners of the window.
- Cracks that widen over time, indicating ongoing movement.
- Sagging above the window where the wall appears uneven.
- Rust stains if you have a steel lintel, which indicates corrosion.
What to Do If You Notice Cracks Above Your Lintels
Once you notice cracks, it’s essential to consult a professional contractor immediately. Here’s what to expect in the repair process:
- Professional Inspection
A contractor will assess the damage and identify whether the issue lies with the lintel, foundation, or another structural element. - Lintel Repair or Replacement
Depending on the extent of the damage, the lintel may need to be repaired or replaced. Steel lintels might require treatment for rust, while concrete or wooden lintels might need reinforcement or complete replacement. - Masonry Repair
After addressing the lintel issue, the surrounding masonry may need to be repaired. This includes fixing any damaged brickwork, stone, or stucco.
Conclusion
Cracks above your window lintels are more than just an eyesore—they can be a sign of serious structural issues. Ignoring them can lead to further damage, costly repairs, and even safety hazards. If you notice any cracks, it’s essential to consult a professional immediately to prevent long-term damage. Regular inspections, proper installation, and preventive measures like waterproofing can help protect your lintels and keep your building structurally sound.
