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Wall ties play a crucial role in keeping your home structurally sound — but over time, they can corrode, loosen, or fail altogether. If left unchecked, damaged wall ties can lead to cracks, bulging brickwork, and even structural instability.

If you suspect your cavity walls need attention, search for wall tie replacement services in Londonderry with Checkatrade for a commitment to quality and a job done right.

What is wall tie replacement?

Most modern cavity walls consist of two layers of brick or block with a gap (the cavity) between them.

Wall ties are metal connectors that hold these layers together, ensuring the wall acts as one solid structure.

Over time, older steel ties can rust or break, causing the outer wall to bow or crack.

Wall tie replacement involves identifying the failed ties, installing new stainless steel ones, and making good the mortar joints — restoring strength and stability to your property.

How much does wall tie replacement cost?

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Costs vary depending on your property size, accessibility, and the extent of corrosion.

For more information, check out our wall tie replacement cost guide.

Common wall tie issues

Some of the most common wall tie problems affecting UK homeowners include:

• Corrosion of galvanised steel ties in older homes
• Cracks appearing in mortar joints or at corners
• Bulging or bowing external walls
• Poor workmanship or incorrect tie spacing during installation
• Loose or missing ties detected in surveys

If you notice any of these signs, it’s important to arrange a wall tie survey as soon as possible.

Wall tie replacement process

Wondering what wall tie replacement involves? Here’s what you can typically expect:

• A surveyor locates and assesses existing ties using a metal detector and endoscope
• Damaged or corroded ties are isolated or removed
• New stainless steel wall ties are installed at precise intervals
• Holes are repointed for a seamless finish

The process is generally non-invasive and can often be completed from the outside of your property without major disruption.

Why wall tie replacement is important

Modern stainless steel wall ties are designed to last 50 years or more, far exceeding the lifespan of older galvanised versions.

Key benefits of wall tie replacement include:

• Restores structural integrity to cavity walls
• Prevents further cracking or movement
• Improves your property’s safety and value
• Peace of mind knowing the issue is permanently resolved

What should be included in your quote?

When comparing quotes from wall tie replacement services in Londonderry, ensure the following details are covered:

• Wall tie survey or inspection included (if required)
• Number of ties to be replaced and type of stainless steel used
• Labour and material costs
• Repointing and finishing details
• Waste removal and clean-up
• Estimated project duration

A transparent, detailed quote helps you compare services fairly and ensures you know exactly what you’re paying for.

What to look for when hiring a wall tie contractor

When hiring a wall tie contractor, it’s important to check for:

• Membership of recognised bodies (e.g., Property Care Association or similar)
• Experience with cavity wall inspections and repairs
• Positive reviews from previous customers
• Insurance and guarantee on completed work

Hiring a tradesperson with the right credentials helps protect your home and your investment.

Tips for hiring a wall tie replacement company in your area

Before hiring a wall tie replacement service near you, follow these steps to ensure you hire right:

• Read reviews on Checkatrade to see feedback from real customers
• Check services offered, e.g., wall tie surveys, replacements, or repointing
• Compare several quotes to ensure you receive a fair and competitive rate

For tradespeople committed to quality and a job done right, search for wall tie replacements in Londonderry with Checkatrade.