Wall tie repairs in the United Kingdom
Replace failed wall ties before the outer leaf begins to pull away.
About wall tie repairs
What this service covers
Wall tie repairs replace corroded or fractured metal ties that connect the inner and outer leaves of a cavity wall. When ties fail, the outer leaf loses its structural connection to the building and can begin to bow outward, often showing as horizontal cracking along the mortar joints. A specialist drills small holes into the outer leaf, inserts new stainless steel ties at the correct spacing, and makes good the drilling points. Corroded original ties are treated or isolated depending on their condition and location.
This service suits owners of properties built between the 1920s and the mid-1980s, where mild-steel ties with thin zinc coatings are most likely to have deteriorated. It is also relevant after a wall tie survey has confirmed that replacement is needed, or where a structural engineer has noted tie failure in a report. A free quote is available once the specialist has reviewed the elevation and the extent of the work required.
Quick overview
Wall tie repair service for UK properties, replacing corroded or broken cavity wall ties to restore structural connection between the inner and outer leaves.
Do these match what you are seeing?
- Horizontal cracks running along mortar joints at roughly regular intervals up the brickwork
- A section of the outer leaf that visibly curves or leans when you look along the wall face
- The property was constructed between 1920 and 1980, when mild steel ties were commonly installed
- A buyer's solicitor or mortgage lender has asked for written confirmation of tie condition
- Render or external finish showing a repeating crack pattern across the wall face
- A neighbour in the same terrace or block has recently had tie corrosion confirmed
Stages of the work
Detection survey
The specialist uses a calibrated metal detector across every elevation of the conservatory to locate existing ties, marking their positions and noting any irregular spacing.
Pull-out testing
Selected ties are put through pull-out testing to establish whether each one carries the required load or has weakened through corrosion.
Remedial tie installation
New stainless steel remedial ties are drilled and fixed at the required centres, and all drill holes are filled flush with matching mortar once each tie is in place.
Completion record
A written report is issued covering tie positions, test results, the number of remedial ties installed and the finished condition of each elevation treated.
Why use Conservatory Subsidence across the United Kingdom
A written quote first. The specialist firm puts the price in writing before any work is agreed.
Written record of what the survey shows. The specialist puts the cause and extent of movement in writing for insurers and purchasers.
Specialists with local ground experience. Firms working locally know the soil and clay conditions that cause conservatory movement.
Your choice, your timetable. Review the costs, take whatever time you need, and proceed only if you are satisfied.
What's included
- Electromagnetic scan of all external elevations to locate ties
- Mechanical load testing of a representative sample of wall ties
- New stainless steel remedial ties at required spacings
- Filling of all drill holes after installation
- Written report covering findings and remedial work carried out
Most wall tie repair jobs on a standard semi-detached or terraced house are completed in one to three days on site. Properties with multiple elevations or extensive cracking that needs repointing typically take a little longer.
What wall tie repair involves
Identifying failed ties
Corroded mild steel ties expand as they rust, forcing apart the mortar bed joints and producing horizontal cracking along the outer leaf. The specialist locates affected ties using a combination of visual inspection and borescope examination of the cavity before any remedial work begins.
Installing remedial ties
New stainless steel remedial ties are driven or screwed through the outer leaf and into the inner leaf at the correct spacing. The holes are then made good to match the surrounding masonry. Remedial ties do not rely on the original tie positions, so they can be placed where the wall needs restraint most.
Removing the original ties
Where the original ties are actively corroding and still expanding, the specialist may cut or de-bond them to stop further pressure on the mortar joints before fitting the new ties. This step reduces the risk of further cracking after the repair is complete.
Dealing with existing cracks
Horizontal cracks caused by tie expansion are repointed once the new ties are in place and any active corrosion pressure has been removed. Where cracking is extensive, crack stitching with stainless steel helical bars may be recommended alongside the tie replacement to restore tensile strength to the wall.
Wall tie repairs across the United Kingdom
Specialists carry out wall tie repairs across the United Kingdom, covering Birmingham · Bristol · Cardiff · Leeds · Leicester · Liverpool · Manchester · Sheffield and many more areas; pick a town to see detail on ground conditions and the work involved there
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Request a quote today
Send us the address, what you have seen and which service fits your situation. A specialist will reply with a quote before any work is agreed.