Corroded Wall Ties? Specialist Survey and Stainless Steel Replacement
Corroded or missing wall ties cause cracking and structural movement. We survey and replace them using specialist stainless steel helical ties with minimal disruption.
About Cavity Wall Tie Replacement
Cavity wall ties connect the inner and outer leaves of a cavity wall. In properties built between roughly 1920 and 1980, these ties were often made from mild steel that corrodes when exposed to moisture — expanding as it rusts and forcing horizontal cracks through the mortar bed joints. If left untreated, corroded ties cause significant structural damage and compromise the stability of the outer leaf. EverDry Damp uses specialist equipment to locate existing ties and assess their condition, then installs stainless steel helical wall ties through the outer leaf with minimal visual impact.
Signs You May Need Cavity Wall Ties Treatment
- Horizontal cracks in mortar beds at regular intervals (matching tie spacing)
- Visible bulging or bowing of the outer leaf
- Cracks running along the same course as mortar joints
- Outer wall appearing to separate from the main structure
Common Causes
- Original mild steel ties corroding due to moisture in the cavity
- Cavity wall insulation trapping moisture against ties
- Properties built between 1920–1981 using butterfly or fishtail ties
- Missing ties due to poor original workmanship
Frequently Asked Questions
How do you detect corroded wall ties?
We use calibrated electromagnetic detection equipment to locate existing ties through the outer leaf. This is non-destructive and does not require opening up the wall. We can also use borescope inspection through small drill holes to visually assess tie condition.
Is wall tie replacement covered by a guarantee?
Wall tie replacement does not carry a written guarantee. Stainless steel does not corrode, so correctly installed replacement ties will last the lifetime of the building. We provide a full written report on all work carried out.
Will my cavity wall insulation need to be removed?
Not always — in many cases we can install new ties without removing existing insulation. Where insulation has contributed significantly to tie corrosion, we may recommend partial or full clearance.
Cavity Wall Ties — Areas We Cover
We provide cavity wall ties treatment across Newport, Cardiff and throughout South Wales.
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