Last week, we covered the basics of wall ties and their importance within your home’s structure. This week we take a closer look at what you need to do if your wall ties have failed.
If wall tie failure is confirmed, the most common solution is wall tie replacement. This involves locating the old, corroded ties and then isolating them so that they no longer affect the structure. This is usually done by drilling into the wall or using metal detectors. Once the old ties have been located, new stainless steel wall ties will be inserted through the outer wall into the cavity at the correct spacing and depth. Once in place, the holes are sealed to match the existing brickwork. In some cases, the old ties are removed or treated to prevent further damage.
The new ties used are often stainless steel or helical types, both of which are designed to resist corrosion and last for decades.
How much does wall tie replacement cost in the UK?
The cost of wall tie replacement varies depending on the size of the property, the condition of the existing brickwork, and how easy the walls are to access. For a typical semi-detached house, expect to pay between £600 and £1,200. For a detached house, the cost can range from £1,200 to over £2,000. Some companies also charge by wall area, with prices typically falling between £25 and £45 per square metre of brickwork. It’s always wise to get multiple quotes and choose a specialist with proven experience.
When to call a specialist
You should consider calling a wall tie or structural specialist if you see horizontal cracks in your mortar joints; if your home was built between 1920 and 1980 and has never had a wall tie inspection; if you are buying an older property and want peace of mind; if you notice bulging or movement in your external walls; or if a surveyor raises concerns during a homebuyer’s report.
Many building and surveying firms offer wall tie surveys that include a borescope inspection. This involves inserting a small camera into the wall cavity to assess the condition of existing ties with minimal disruption.
Do you need building regulations approval?
Wall tie replacement is generally considered repair work and does not require planning permission. However, the work must comply with UK Building Regulations. A trustworthy contractor will ensure this and should provide a certificate of compliance once the work is completed.
If your home is showing signs of wall tie failure or you're concerned about an older property, don’t wait. Acting early can prevent more serious and costly structural issues in the future.
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