Understanding Cavity Wall Tie Failure: A Crucial Guide for UK Homeowners

As a UK homeowner, maintaining the structural integrity of your property is paramount. One of the lesser-known but significant issues that can compromise your home’s stability is cavity wall tie failure. This blog post will delve into what cavity wall tie failure is, how to identify it, and the steps you can take to address and prevent this problem.

What Are Cavity Wall Ties?

Cavity wall ties are metal components that connect the inner and outer leaves of a cavity wall. They ensure that both walls act as a single structural unit, providing stability and preventing bulging or collapsing. Over time, these ties can corrode or fail, leading to serious structural issues.

Signs of Cavity Wall Tie Failure

Detecting cavity wall tie failure early can save you from costly repairs and potential hazards. Here are some common signs to watch out for:

  • Horizontal Cracks: Look for horizontal cracks in the mortar joints, particularly at regular intervals.
  • Bulging Walls: A clear indication that the wall ties are not holding the walls together effectively.
  • Rust Stains: Visible rust stains on the wall surface can be a sign of corroded wall ties.
  • Loose or Cracked Mortar: Deterioration in the mortar between bricks can suggest wall tie issues.

Causes of Cavity Wall Tie Failure

Several factors can contribute to the failure of cavity wall ties, including:

  • Corrosion: Over time, moisture can lead to rust and corrosion, weakening the ties.
  • Poor Installation: Incorrectly installed wall ties can fail prematurely.
  • Aging: Like all building components, wall ties have a lifespan and may deteriorate with age.

The Importance of Regular Inspections

Regular inspections by a qualified surveyor are crucial in identifying cavity wall tie failure early. During an inspection, the surveyor will:

  • Use Specialist Equipment: Tools like metal detectors and boroscopes can locate and assess the condition of wall ties.
  • Assess Damage: Determine the extent of corrosion or failure and recommend appropriate remedial actions.
  • Provide a Detailed Report: A comprehensive report outlining the findings and suggested repairs.

Solutions for Cavity Wall Tie Failure

If an inspection reveals cavity wall tie failure, several remedial actions can be taken:

  • Wall Tie Replacement: Installing new stainless steel wall ties to replace the failed ones.
  • Repointing: Repairing mortar joints to restore stability.
  • Structural Reinforcement: In severe cases, additional structural support may be required.

Preventing Cavity Wall Tie Failure

Prevention is always better than cure. Here are some steps you can take to prevent cavity wall tie failure:

  • Regular Maintenance: Ensure your property is well-maintained and any issues are addressed promptly.
  • Damp Proofing: Protect your walls from moisture ingress to prevent corrosion.
  • Professional Inspections: Regular inspections by a qualified surveyor can catch issues before they become serious.

Why Choose Us?

At Home-MOT, we specialise in comprehensive property surveys. Our experienced surveyors use the latest technology to ensure your home remains safe and structurally sound. Contact us today to schedule an inspection and safeguard your property.


Cavity wall tie failure is a critical issue that UK homeowners need to be aware of. By understanding the signs, causes, and solutions, you can take proactive steps to protect your home. Regular inspections and maintenance are key to preventing costly and dangerous structural issues.

For expert advice and professional surveys, trust Home-MOT. We’re here to help you maintain the integrity of your home.