Cavity wall tie repair and replacement specialists

Northwest Wall Ties proudly stands as a family-operated team of seasoned professionals serving communities across the North West of the UK. Our unwavering commitment spans projects of all sizes, positioning us as the premier choice for comprehensive wall tie surveys, repairs, and replacements.

Looking for help? Get in touch with us

Cavity wall tie repair and replacement specialists

Northwest Wall Ties proudly stands as a family-operated team of seasoned professionals serving communities across the North West of the UK. Our unwavering commitment spans projects of all sizes, positioning us as the premier choice for comprehensive wall tie surveys, repairs, and replacements.

Looking for help? Get in touch with us

Request a call back

If you have any questions or would like to book a survey, complete the form below and a member of our team will call you back.

What are cavity wall ties?

Cavity wall ties serve as essential metal connectors, seamlessly joining two masonry walls. Crafted from either galvanized steel or stainless steel, these ties are strategically embedded within mortar joints, ensuring a robust bond between courses of bricks or blocks.
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Cavity wall tie replacement

Our expert team will conduct a thorough assessment to precisely determine the necessary repairs and replacements for wall ties. This inspection will be scheduled at your convenience by one of our highly skilled and experienced surveyors.
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What Causes Cavity Wall Ties to Corrode?

What causes cavity wall ties to corrode?

Originally, cavity wall ties were crafted from iron or steel, but these metals corrode under damp conditions. To counteract this, wall ties were coated with zinc. However, this protective layer can deteriorate over time, leading to tie failure. The first British standard wall tie with a defined zinc coating was introduced in 1945 and further refined in 1981.

Pre-1981 wall ties are prone to premature failure due to various factors like corrosive mortars, exposure to rain, and substandard galvanizing. Corroded fishtail ties can cause cracking in the outer leaf, while wire Butterfly ties may snap without warning, leading to bulging in the wall. Though Butterfly ties typically last around 35 years, conditions can shorten their lifespan significantly.

To mitigate future tie failures, modern wall ties are made from stainless steel, eliminating corrosion concerns. Replacement of wall ties requires specialised expertise and is recommended to be done by professionals to ensure structural integrity.

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Signs of cavity wall tie failure

Signs of cavity wall tie failure
  • Horizontal Cracks

    Found in the mortar, often at a high level.  This is caused by the expansion of corroded wall ties on the external leaf.

  • Bulging Brickword

    A sign of snapped wall ties, which can make your property unstable.

  • Internal Cracking

    Internal cracking is caused by the expansion of corroded wall ties.

  • Cracks in the render

    Vertical cracks in the render

  • Roof edges lifting

    The inner leaf carries the roof load, but as corroded wall ties expand and crack the mortar, the outer leaf takes the load resulting in forcing the roof upwards or the gable ridge to rise

Signs of cavity wall tie failure

  • Horizontal Cracks

    Found in the mortar, often at a high level.  This is caused by the expansion of corroded wall ties on the external leaf.

  • Bulging Brickword

    A sign of snapped wall ties, which can make your property unstable.

  • Internal Cracking

    Internal cracking is caused by the expansion of corroded wall ties.

  • Cracks in the render

    Vertical cracks in the render

  • Roof edges lifting

    The inner leaf carries the roof load, but as corroded wall ties expand and crack the mortar, the outer leaf takes the load resulting in forcing the roof upwards or the gable ridge to rise

Book a survey

Whether you want to book a survey, or get a quote, simply complete the form below and a member of our team will be in touch.

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Testimonials

Warren and his team were friendly and efficient, working well together to get the job done properly and quickly. He quoted for the work back in September, and the price stayed the same despite us not confirming the go-ahead until December. All in all professional and I would recommend them to anyone needing wall ties in future.

Nathan Jones

After wall tie failure was highlighted on our building survey, North West Wall Ties produced a professional pre-purchase report for us in really good time, and gave us what seems a perfectly reasonable quote for the work. Hopefully our purchase goes through and then we’ll be able to get the required work done with this company.

Tom Withers

Warren was fantastic. From the first point of contact to the job was complete he was contactable, reliable, extremely fair in price and more than punctual.

Very professional manner and very thorough in his work. Extremely approachable, happy and pleasant. Very highly recommended.

Victoria Ward