Twistfix

Crack Stitching Products

Use Crack Stitching products for lasting masonry repairs that reconnect and reinforce cracked walls. Twistfix supplies a selection of stainless steel masonry reinforcements. Helical bars that can stitch cracks and strengthen brickwork are pivotal to this range.

Stitching cracked walls with helical bars is the 'go-to' crack repair specification from many insurers, councils, and engineers. With increasing numbers of building professionals involved in such work, many turn to Twistfix for the best structural supplies at low trade prices.

How Crack Stitching Works.

Stitch across cracks in face brickwork by bonding stainless steel helical bars into slots cut into mortar beds. Then point the slot to conceal the masonry reinforcement.

Each hidden bar accumulates tensile forces and spreads the loads along the helix. Installing a series of bars creates a reinforced zone. The evenly dispersed loads minimise the risk of further cracking.

How to Fit Crack Stitching Products in Existing Walls.

  • Remove mortar along selected bed joints at 300 to 450 mm vertical centres. Extend the slots 500mm on each side of the fracture. The depth of the slots should be 30 mm in single-leaf brickwork and 45 mm in a solid double-brick wall. The slot height must be at least 3mm larger than the bar diameter.
  • Clear all debris from the slots and flush them with water.
  • Mix WHO 60 grout and use it to fill each slot two-thirds deep.
  • Push spiral rods into the grout and trowel the displaced mortar to fully enclose the helix.
  • Where several cracks are in proximity, use longer bars to stitch across them all.
  • Position the reinforcing bars at 300 to 450 mm intervals.
  • Fill and seal the fracture to prevent water ingress and restore compressive strength. Repoint the slots.

Crack Stitching products are not limited to use in bed-joint reinforcement. Helical bars can be fitted directly into the brick units when repairing fractures in rendered walls to bind bricks together. Where there is no need to disguise the bars within the mortar, diagonal reinforcement or the use of heavier bars is viable where shear strength is an issue.

Crack stitching is quick, easy and reliable. Use our cost-effective helical bars to restore strength and stability to cracked walls.

Our UK-made helix-shaped rods are available in many diameters, lengths and pack sizes. The stainless steel bars provide superb strength and corrosion resistance. Rigorous tests show our bed joint reinforcement products meet and exceed the performance standard of BS EN 845-1. Installation of the bars requires the use of WHO 60 masonry repair grout. The gout is also available from Twistfix separately or in one of our crack stitching kits.

Product Specifications

  • Stainless Steel Crack Stitching Rods.
    • Diameters: 5, 6, 7, 8 and 9 mm.
    • Available Lengths: 1.0, 1.5 and 2.0 metres and in 7 - metre coils.
    • Tensile strength: 1025 to 1225 N/mm 2.
  • Polymer-modified Bonding Grout.
    • Compressive Strength: 55 N/mm 2.
    • Tensile Strength: 5 N/mm 2.
    • Flexural Strength: 12 N/mm 2.
    • Young's Modulus: 13 N/mm 2.

As the UK market leader in supplying the best crack stitching products, Twistfix can offer expert technical advice. Order by phone or buy online for fast UK delivery.

12 items
Sort by:
Crack Stitching Bars 6 mm x 1 m - 10 Pack

Crack Stitching Bars 6 mm x 1 m - 10 Pack

6 mm x 1 m crack stitching bars strengthen cracked masonry walls. These high-quality stainless-steel helical bars are in stock and sold in packs of 10 at low trade prices.
Price excl. VAT
£29.90
Price incl. VAT
£35.88
Crack Stitching Kit

Crack Stitching Kit

Our professional crack stitching kit has everything needed to strengthen cracked walls. The kit contains ten 6 mm helical bars, high-strength grout and a set of installation tools.
Price excl. VAT
£89.95
Price incl. VAT
£107.94
Masonry Repair Grout

Masonry Repair Grout

Masonry repair grout for bonding helical stitching bars into cracked walls. High performance adhesive grout used for structural repairs and reinforcement. Tested at the BRE. Yield 3L
Price excl. VAT
£39.80
Price incl. VAT
£47.76
Brick Stitching Kit - 8 mm helical bars

Brick Stitching Kit - 8 mm helical bars

Brick Stitching Kit with everything needed to reinforce cracked brick, block or stone walls. 1 m long, 8 mm diameter heavy-duty helical bars in a 10 bar kit
Price excl. VAT
£114.00
Price incl. VAT
£136.80
Brick Stitching Bars 8 mm x 1 m - 10 Pack

Brick Stitching Bars 8 mm x 1 m - 10 Pack

8 mm x 1 m brick stitching bars reinforce cracked brickwork and masonry. These heavyweight helical bars are in stock and sold at low trade prices in packs of 10.
Price excl. VAT
£44.90
Price incl. VAT
£53.88
Structural Repair Ties

Structural Repair Ties

Structural repair ties are extra long 12 mm diameter drive-in helical wall ties that reinforce vulnerable masonry walls. Lengths 910 mm (36") to 1670 mm (66") in 150 mm (6") increments. Pack of 10.
Price excl. VAT
£153.98
Price incl. VAT
£184.78
Crack Stitching Rods 6 mm x 1 m - 100 Pack

Crack Stitching Rods 6 mm x 1 m - 100 Pack

Builders pack of 6mm high tensile helical bars for stitching and reinforcing areas of fractured brickwork - Length 1m - Pack of 100 pieces
Price excl. VAT
£279.50
Price incl. VAT
£335.40
Long Crack Stitch Bars 6 mm x 2 m - 10 Pack

Long Crack Stitch Bars 6 mm x 2 m - 10 Pack

6mm crack stitching bars for strengthening cracked masonry walls. CE and UKCA compliant helical bars. High-tensile stainless-steel retrofit reinforcement - Pack of 10
Price excl. VAT
£59.98
Price incl. VAT
£71.98
Brick Pin Fixing Kit

Brick Pin Fixing Kit

A brick pin fixing kit for repairing cracks in walls. These masonry stitching pins are supplied for tying brick buildings, bridges and tunnels. Kit includes 10 heavy duty helical tie bars.
Price excl. VAT
£161.50
Price incl. VAT
£193.80
Helical Stitching Bars 6mm x 1m - 480 Multi-Pack

Helical Stitching Bars 6mm x 1m - 480 Multi-Pack

Helical stitching bars for strengthening masonry walls. These high-tensile helical bars are manufactured from corrosion resistant stainless steel. 6mm x 1m helix x 480 pieces.
Price excl. VAT
£1291.20
Price incl. VAT
£1549.44
Crack Stitching Grout x 48

Crack Stitching Grout x 48

WHO-60 is a high performance grout designed for bonding helical bars into masonry walls. Fully tested at the BRE, this polymer modified grout is sold on pallets of 48 tubs, sufficient for fixing 480 stitching bars.
Price excl. VAT
£1632.00
Price incl. VAT
£1958.40
Boxed Crack Stitch Kits - Wholesale

Boxed Crack Stitch Kits - Wholesale

Boxed crack stitching kits for merchants / resellers. A versatile repair kit with everything needed for the structural repair of fractured brickwork and masonry walls - Quantity 6 boxes
Price excl. VAT
£509.40
Price incl. VAT
£611.28