Crack Stitching & Wall Tying in Cape Town
We deliver specialist crack stitching and wall tying solutions using Thorhelical products—designed for strength, durability, and long-term performance. This method effectively repairs cracked masonry, secures unstable walls, and restores structural integrity.
Thorhelical Installer
We are proud to be an installer of Thorhelical products, the world's leading helical reinforcement system. These innovative solutions provide superior strength and durability for masonry repair and reinforcement applications.
Proven Technology
30+ years of global engineering excellence
Superior Strength
High-tensile stainless steel construction
Long-Term Solution
Designed for permanent reinforcement
Crack Stitching
Helical reinforcement bars are inserted into pre-drilled holes across cracks, bonded with high-strength grout to create a permanent repair that's stronger than the original masonry.
- Stops crack propagation
- Minimally invasive installation
- Compatible with all masonry types
Reinforcement
Wall tying and reinforcement solutions that strengthen existing structures, prevent future movement, and provide long-term stability for both load-bearing and non-load-bearing walls.
- Structural strengthening
- Prevention of future movement
- Suitable for heritage buildings
Our Installation Process
Assessment
Structural evaluation and crack analysis
Planning
Custom solution design and material selection
Installation
Precision drilling and helical bar insertion
Finishing
Surface restoration and quality assurance
All work is completed to manufacturer specifications and industry best practices. We ensure minimal disruption while delivering repairs that provide permanent structural solutions. Every installation comes with comprehensive documentation and warranty coverage.
Signs You Need Crack Stitching
Not every crack is a problem, but these are the signs that a wall needs a proper assessment:
- Stepped or diagonal cracks that follow the mortar joints
- Cracks wider than a hairline, or that have grown since you first noticed them
- A crack that shows on both the inside and the outside of the same wall
- Wall sections that bulge, lean or separate, for example at corners or where walls meet
- Doors and windows that stick or no longer close properly
Why Walls Crack
Walls crack when something moves. The usual causes are ground settlement or seasonal moisture changes under the foundations, tree roots, expansion and contraction with temperature, and older masonry with little or no reinforcement or wall ties.
Finding the cause matters. A crack that has stopped moving can be repaired permanently, while one that is still moving needs the movement dealt with first.
Crack Stitching Versus Filling a Crack
Filling a crack with filler or paint only covers it, and a structural crack will usually open again along the same line. Crack stitching ties the masonry back together: helical bars are bonded with high-strength grout across the crack, which spreads the load into the surrounding wall and stops the crack from opening further.
The method is minimally invasive, and the wall is made good afterwards so the repair is hardly visible once it has been repainted.
Crack stitching repairs the wall but does not remove the cause. If a crack is still actively moving, for instance because of subsidence or a failing foundation, we will say so and recommend a structural engineer's input before any repair work starts.
Our Crack Stitching Process, Step by Step
- Free assessment. We inspect the cracks, look for the cause and check whether the wall is still moving.
- Written quote. You receive a clear scope of work, so you know what is included before anything starts.
- Preparation. We protect your property and prepare the line of the crack so the bars can be installed.
- Installation. Helical bars are bonded with high-strength grout across the crack to tie the masonry back together.
- Making good. The wall is repaired and finished to match, whether that is re-pointed brick or plaster.
- Repaint and handover. Repaired areas are painted to blend in, and we walk through the finished work with you.
What Affects the Cost of Crack Stitching
We quote after an assessment rather than from a price list, because no two walls are the same. The main factors are:
- The number and length of the cracks
- The type and thickness of the wall
- How hard the area is to reach, for example upper storeys
- The finish that has to be matched, such as face brick or plaster
- Whether the repaired areas, or the whole building, are being repainted afterwards
Older and Heritage Buildings
Older and heritage buildings often have solid or lime-mortar walls with little reinforcement, which is where crack stitching is particularly useful because it adds strength without rebuilding the wall. For wider repair work, see our structural repairs and heritage restoration service. To understand what you are looking at, read our guide to what each type of wall crack means.
Crack Stitching Across Cape Town
We carry out crack stitching and wall tying throughout Cape Town and the Western Cape, including Claremont, Constantia, Newlands, Plumstead, Rondebosch and the Cape Town CBD. Not sure whether we cover your area? Call us on (073) 1888 328.
Need Professional Crack Stitching or Wall Reinforcement?
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