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Self-check

Wall tie survey checker

Answer a few quick questions about what you've noticed. This gives an initial read of how likely wall tie failure is: not a diagnosis. Only a survey confirms what is actually going on in the cavity.

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Self-checks

Could it be wall tie corrosion?

Have you noticed horizontal cracking along a mortar joint, rather than diagonal cracking?
Does any part of the wall look like it bulges or bows outward compared to the rest?
Is there rust staining bleeding through the brick or render in a regular, evenly spaced pattern?
Roughly when was the property built?
Has a mortgage lender or surveyor asked for a wall tie survey?

A rough guide only; the confirmed answer comes from an investigation. Request an assessment to arrange one.

Reading the levels

Signs point toWhat it means
Low likelihoodThe signs you described are minor and often unrelated to wall ties. Still worth a photo record to keep an eye on.
PossibleThe combination of signs is worth a proper look. A survey will confirm whether tie corrosion is actually involved.
Worth surveying soonThe signs point to possible wall tie failure, especially given the property's age. Book a survey soon: early diagnosis keeps any replacement smaller and cheaper.

Look-alikes

  • Thermal or seasonal movement: Fine diagonal cracks that open and close with the weather, often around windows, are usually harmless thermal movement, not tie failure.
  • Render cracking alone: Shallow cracking in render alone, with no pattern in the brick beneath, is often just a render defect.
  • Old, stable settlement: A wall that has looked the same for many years without change is less likely to be showing active tie failure.

No pressure

Book a wall tie survey

Give the address and a few lines on the brickwork, and a specialist covering your area will confirm the visit at the set price.

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