CRACK STITCHING

Crack stitching specialists with 35+ years experience repairing cracks in walls. We use helical bar or wall ties, remedial work and/or damp proofing to provide stability in your commercial and domestic buildings.

 

WHAT IS CRACK STITCHING?

In the simplest of terms, this is a way of repairing walls that have cracks and ensure they are structurally sound. This involves the retrofitting of numerous bars for crack stitching that are grouted into place across the wall cracks to connect them again and make the masonry more stable again. Crack stitching is used to stabilize cracked and damaged masonry. We are Crack Stitching Specialists that Specialise in Cracks in Walls requiring Helical Bar or Wall Ties, Remedial Work and/or Damp Proofing. Buildings can move over time and this can result in cracking which affects the inherent strength of the property. At Structural Repairs, we are specialists at identifying these problem areas and rectifying the problem.

How to crack stitch a wall

The process and the reason for the Crack Stitching process is to help strengthen the cracked walls in the buildings that are affected by subsidence. Crack stitching is a permanent and successful method of structural repairs to restore cracked walls and ensuring that they are reinforced in masonry structures and buildings. Slots are made into the walls where the cracks are and the crack stitching bars made from stainless steel are inserted. This is normally in the bed joints as it is easy enough to do. Have a look at our crack stitching case study on a lovely little house in Datchet area to give you a more  information on how we do it.
This cute little cottage was unexpectedly hit by a case of subsidence, Luckily the owners of the property had spotted the issue and contacted us immediately to voiced their concerns. The same day we managed to get one of our Structural Engineers out to the property to view the issue and what we found was that the cottage had suffered minor movement causing the newly built extension to pull away from the house. This is shown in the images below.
By looking at that wall you can’t really see much wrong with it correct? Catching subsidence issues early is vital for your properties structural health that’s where our Structural Engineers come in. We sent Andy Walker over to the property and he will point out all the issues that you should look out for with your property.
As you can see from where Andy is pointing to, there is a crack running through the join connecting the side extension to the house.
The crack runs the length of the wall and is visibly wider at the top of the join which indicates that the extension is being pulled away from the house.
As you can see in the image above cracks have appeared on the house wall which could end up threatening the properties foundational integrity
The red arrows in the image above point to the cracks that run close to a concrete support beam and also an air vent which are both vital points in the wall.
Once all the cracks had been analysed it was time to start addressing the problem. The structural repairs team was called out and briefed on the situation.
After being briefed our Structural Repairs team member got his PPE on and started the crack stitching process.
The process starts with making cuts in between the bricks so that crack stitching rods can be inserted into the wall to help improve the structural regidity
The cuts were then inspected to make sure they were the right depth and also that they were clean, the cuts being clean is an important factor in the next stages.
We then prepped our crack stitching kit.

  1. Thor Helical W60 Flexi Grout
  2. Grout Gun
  3. Thor Helical Twisted Rods
  4. Pointing Tool
The flexi grout was then mixed to the correct consistency for maximum effectiveness.
Flexi grout was then put into the grout gun and carefully put into the cuts made in the wall.
The twisted reinforced crack stitching rods were then inserted into the cuts that have the flexi grout in.
Once the bars had been placed within the cuts filled with flexi grout and left to dry it was time to mix up some cement to fill in the cuts.
Using the pointing tool our Structural Repairs team member filled in the remaining space within the cracks with the cement to seal in the stregthening rods and flexi grout.
The end of the crack stitching process, as you can see it looks good as new! All the cracks have been regrouted and the strengthening rods that are now safely hidden away within the walls help strengthen the wall. The Thor Helical twisted strengthening rods have a TEN YEAR guarantee on them so you’ll be covered if anything goes wrong with them although that is very unlikely. If you have noticed cracks appearing in your walls it’s better to be on the safe side and give us a call so we can come and get an inspection started.

MORE ABOUT OUR CRACK STITCHING REPAIR

Our Team of Experts

Our crack stitching team includes fully qualified structural engineers who will inspect the affected areas, identify the cause of the problem including damp proofing and write a proposed scope of works. The works will then be undertaken by our fully trained staff who are Thor-helical approved installation contractors.

Our Method

Our chosen crack stitching product is Thor Helical international manufacturer of precision-engineered helical bars, wall ties and fixings. Thor products are used across the globe in both new build and refurbishment market sectors.

Other Types of Masonry Repair

We also undertake lateral restraints and all other types of masonry repairs. In instances where the building has become beyond repair, our Structural Engineers are able to design temporary propping schemes which will allow the affected areas to be demolished and rebuilt.

Crack Stitching FAQs

We’re here to help! Here you’ll find the answers to the questions we get asked the most about crack stitching. If you would like to know more, get in touch for a free consultation.
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    How do you repair cracks in brick walls?

    The process starts by identifying the affected area. The grout layer between the affected brickwork is then cut into and helical bars are inserted into the brickwork which bind the wall together. The grout is replaced, returning the wall to its original statement. This whole process stabilises the building and the products used have a 10-year manufacturer’s warranty.

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    How much does crack stitching cost?

    Crack stitching costs vary depending on the amount of crack stitching to be undertaken along with the ease of access. Typically crack stitching cost would start from £450.00 for a vertical crack on a single story building with the crack stitching bars installed at 450mm vertical centres.

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    What is crack stitching?

    Cracks start to appear in walls, ceilings and floors over time due to many reasons, the main reason being because of building/foundation movement. If the reason cracks have appeared is found to be a minor problem, then crack stitching is a great solution.

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