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Expert cavity wall tie replacement and inspection service
Cavity Wall Tie Installation by JTC Structural Repairs – Professional, reliable & guaranteed
At JTC Structural Repairs, we specialise in expert cavity wall tie replacement and installation services for residential, commercial, and industrial properties across the East Midlands. We primarily cover Leicester, Nottingham, Derby and Northampton but can cover further afield on enquiry. Using the latest equipment and techniques, our experienced structural repair team ensures your property remains structurally sound, safe, and compliant with building regulations. Read below to see how we do this.
What Is a Cavity Wall Tie?
A cavity wall tie (also known as a remedial wall tie, dryfix tie or helitie) is a corrosion-resistant metal connector that links the inner and outer leaves of a cavity wall. It ensures the two masonry skins act together structurally, while also helping to control moisture transfer across the cavity.
A visibly rusted and failed wall tie from within a cavity
Purpose and function of cavity wall ties
Cavity wall ties are installed during the construction of a cavity wall. Their purpose is to tie the inner leaf masonry to the outer leaf masonry via the cavity within the wall- working cavity wall ties are essential to ensure the wall remains stable and resistant to wind loads and wind suction. Wall tie failure or incorrect density of cavity wall ties leads to structural failure or collapse of the wall.
How to identify cavity wall tie failure
Failed cavity ties can be identified by horizontal cracking of the exterior masonry or bulging of the outer leaf masonry. Corroded ties can be identified by physical inspection of the cavity - either by brick removal, or endoscopic camera investigation via a small pilot hole after ties have been found from the outer leaf by use of a metal detector.
Methods we use to identify cavity wall tie failure
Walls are physically inspected for cracking or displacement of brickwork.
Tie density is then checked with the use of metal detectors
Tie condition is physically checked with endoscopic camera inspection via a small pilot hole- as seen in photos below.
Methods we use for cavity wall tie replacement
Firstly we carry out engineering calculations for wall tie requirements based on location, slope of land, vertical height of the building and thickness of the wall.
Once required pull out values of replacement ties are confirmed we test proposed replacement ties using a test tie and carrying out load test to proof capacity (using a specialised load tester, as seen in photos below) in accordance with B.R.E guidelines.
A full report is then issued to our client along with the results of the proof tests
Once testing has been completed, we carry out the full installation of ties as per the client's specification, repointing brickwork with coloured matched mortar so that our installation will be barely noticable.
Live Wall tie load testing in progress- results generated into a printable report and graph for the customer
Is this something we can do for you? Submit an enquiry below or get in touch on one of the following:
Tel: 01162375082