Wall tie replacement quotations should be based on the property and the inspection findings. Cracks alone do not confirm wall tie failure, and a general guide cannot establish which repairs a particular building needs. CavClear provides cavity wall tie surveys, written reports and quotations for remedial work where required.
Start with a cavity wall tie survey
A survey assesses accessible elevations, the wall construction and samples of existing ties. It records findings, photographs, inspection limitations and recommendations. Metal detection and borescope inspection may be used where suitable. Where insulation obstructs the view, selected bricks may need to be removed to inspect ties, cavity width and the inner leaf. Access and making-good arrangements form part of the agreed survey scope.
Older mild-steel ties can deteriorate, but early corrosion does not automatically mean that ties have failed or require replacement. Their type, condition and distribution must be considered alongside the masonry and cavity conditions.
Read about cavity wall tie surveys and reports.
What affects the scope of replacement work?
- Wall construction: masonry materials, cavity width and the condition of both wall leaves influence the suitable tie system.
- Areas requiring repair: the elevations, openings and defects identified during inspection determine the proposed extent of work.
- Access: building height, conservatories, extensions, boundaries and restricted passages affect safe working arrangements.
- Existing ties: isolation of defective original ties may be required as part of the replacement scheme.
- Associated masonry repairs: localised crack stitching or making good may be recommended where the findings support it.
- Cavity conditions: insulation, debris or moisture-related defects may require separate investigation or remedial work.
CavClear confirms the proposed works and relevant access requirements in a property-specific quotation. Recommendations are based on the inspection findings rather than a standard repair package for every home.
Choosing a suitable remedial tie system
Remedial ties are selected to suit the masonry, cavity width, exposure and required fixing performance. Different systems have different installation and testing requirements. No single helical, mechanical or resin-fixed system is automatically suitable for every property.
The specification and installation should follow the selected system’s technical requirements. Where required, testing helps assess fixing performance in the actual masonry. Further specialist design or investigation may be necessary for unusual construction, significant movement or defects outside the scope of the wall tie inspection.
Cracks and cavity conditions
Horizontal or stepped cracks, bulging and movement around openings warrant assessment, but they do not establish the cause on their own. Cracking can have several causes. Replacement ties will not resolve an unrelated foundation, lintel or masonry defect.
Wet or unsuitable cavity wall insulation may require attention where inspection identifies a problem. Its presence does not automatically mean it must be extracted as part of every wall tie replacement. CavClear also provides cavity wall insulation removal and extraction where appropriate.
Making good and guarantees
Installation involves drilling and may require local access to existing ties or masonry. We aim to limit disruption and match disturbed finishes as closely as reasonably practical. Repairs may remain visible because of differences in mortar, render, paint or weathering. Internal access requirements depend on the agreed works.
Any guarantee applies to the actual scope of works and the terms confirmed in the quotation and guarantee documents. Product design life, a contractor’s guarantee and a guarantee of the entire building’s condition are different matters.
Buying or selling a property
If a homebuyer survey recommends a wall tie inspection, send CavClear the relevant comments, property address and access details. We can liaise with estate agents or key holders. The report explains the findings and any recommended work. Buyers and lenders decide what documentation or further action they require.
Arrange a survey and quotation
Contact CavClear for nationwide cavity wall tie surveys and wall tie replacement. Tell us about the property, any cracking, rendering, insulation and access restrictions so we can agree an appropriate inspection scope.
Arrange a wall tie survey or call 0333 220 2463.
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