Helically twisted crack stitching bars are stainless steel reinforcing rods that permanently reconnect and reinforce cracked walls. Our standard stainless-steel helical bars are 1.5 metre long and 6 mm in diameter and sold in packs of ten. Ideal for stitching corner cracks. Can also stitch a seris of cracks.
Cut or grind slots along the selected bed joints, min 500 mm, on each side of the crack. The height of the slot must be 3 mm more than the bar diameter. Clean the openings and flush them with clean water. Mix WHO 60 grout and load it into the applicator. Dispense the mixture to fill each slot to two-thirds deep. Push the rods into the grout and trowel the displaced mortar to fully cover the rod. The grout sets around the peaks and troughs of the helix and bonds the reinforcing rods firmly within the wall. Finish by pointing the wall to conceal and disguise the installation. This crack stitch method repairs vertical, diagonal, and step-cracks in brickwork.
Each grout-bonded helical bar stitches across the crack, absorbing axial loads and spreading them along the entire helix length. A series of stitching bars centred along a crack creates a reinforced zone that increases the brickwork's tensile, shear and flexural strength.
Our 6 mm helical bars comply with EN 845-1 for retrofit masonry reinforcement. One grout-bonded bar delivers tensile resistance of over 8 kN, and two bars in one slot 16 kN. The reinforcement reconnects cracked brickwork, restoring its strength and resistance to further cracking.
Buy our British-made crack stitching bars; the rods have patented engineering tolerances. To fix the helical reinforcement bars into walls, you need WHO 60 grout, a mixing paddle, a pointing iron and a mortar applicator.
Twistfix keeps its best-selling crack stitching bars in stock, ready for fast delivery across the UK. Click here for help & expert advice on how to repair cracked walls.
Below is the standard tariff for guidance purposes.
Actual costs will be confirmed at point of sale and any variances you will be notified within 24 working hours of receipt of order
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We offer free next-day delivery for all orders over £150 (ex VAT) (UK Mainland Only).
Next day delivery is available for orders placed before 2pm Monday - Friday (working days). Delivery will be made on the next working day.
For orders placed before 2pm on a Friday, delivery will be made on the following Monday. For orders placed after 2pm on a Friday and over the weekend, delivery will be made on the following Tuesday. For orders placed on a Bank Holiday, goods will be dispatched on the next working day (e.g goods will be dispatched on the Tuesday for delivery on Wednesday).
These delivery options are available at an extra charge. Delivery prices are shown at checkout stage. Orders need to be placed before 2pm Monday - Friday (working days) for delivery on the following working day.
By placing an order on our website, you acknowledge and accept that delivery times are estimates and may be subject to delays due to various factors beyond our control, including, but not limited to, weather conditions, transportation issues, or other unforeseen circumstances. While we make every effort to ensure timely delivery, we cannot guarantee specific delivery dates.
If there are significant delays, we will do our best to keep you informed.
Thank you for your understanding and patience.
You have 14 days from the date of purchase to notify us you wish to return your items and receive a full refund (ex. delivery and card fees) in line with our terms and conditions. Please email us to request a return at sales@twistfix.co.uk