Twistfix

Crack Stitching

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Crack Stitching Bars

These 6mm Crack stitching bars for masonry repairs and rein­for­cement of cracks in walls. High tensile (circa 8kN) helical bars for repairing a cracked wall permanently - Pack of 10
  • RRP £69.60
  • £53.40
  • £44.50
Rating 5.0 of 5

Masonry Crack Repair Kit

Complete Masonry Brick Stitching Kit. Contains all products needed for high strength, masonry repairs to cracked brick, block or stone walls. Select 6mm, 7mm or 8mm helical bars. 10 bar kit
  • RRP £189.00
  • £119.52
  • £99.60
Rating 5.0 of 5

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
  • RRP £63.00
  • £47.76
  • £39.80
Rating 5.0 of 5

Masonry Crack Rein­for­cement - HD

8mm & 9mm - Heavy duty masonry stitching bars for crack reinfor¬­cem¬­ent & wall repairs. Bars have a tensile strength of 12kN+ & 15kN+ respectively Pack of 10
  • RRP £103.61
  • £79.80
  • £66.50
Rating 5.0 of 5

Brick Rein­for­cement

5mm-9mm Diameters- 10 Pk
Twistfix brick rein­for­cement stitching bars are used to reinforce and strengthen fractured brick and masonry walls. Reinforcing bars are 1m long.
  • RRP £57.00
  • £43.80
  • £36.50

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.
  • RRP £249.78
  • £191.40
  • £159.50
Rating 4.6 of 5

Structural Repair Ties - 10Pk

Structural repair ties are extra long 12mm diameter drive-in helical wall ties that reinforce vulnerable masonry walls. Lengths 1070 (42"), 1220 (48") and 1370mm (54") - 10Pk
  • RRP £276.42
  • £199.50
  • £166.25

Reinforcing Bars - 480 Brick Stitches

Reinforcing bars for structural brick stitching repairs. High tensile helical rebar is manufactured from corrosion resistant stainless steel. The rein­for­cement stitches cracks in brick walls. 480 x 1m lengths
  • RRP £3214.08
  • £1670.40
  • £1392.00

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.
  • RRP £3024.00
  • £1798.80
  • £1499.00

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
  • RRP £1134.00
  • £537.84
  • £448.20

Crack Stitching Kit

* 5 BAR KIT* Professional crack stitching kit with everything needed to improve the structural performance of cracked brickwork and stone walls. Contains 1m x 6mm helical bars, offering high tensile stainless steel rein­for­cement.
  • RRP £142.20
  • £83.70
  • £69.75
Rating 4.8 of 5

Crack Stitching Repair for Brick Walls

Twistfix Crack Stitching Guide Crack Stitching Guide Twistfix Crack Stitching Specification Crack Stitching Specifi­cation

Crack stitching is a masonry repair technique that reconnects and reinforces cracked walls. Twistfix supplies a range of masonry rein­for­cement products including stainless steel helical bars that stitch across the fractures to strengthen and repair cracks.

When tying cracks in face brickwork these high strength bars are grouted into slots cut into mortar beds, ensuring the rein­for­cement is discreetly concealed once the mortar joint is pointed. Tensile forces are redis­tri­buted along the wall to dissipate load and minimise the risk of further cracking.

Method Statement

  • Remove mortar along selected bed joints.
  • Flush with clean water and bond helical bars (should extend 500mm each side of crack) into each slot using WHO-60 grout. Where several cracks in close proximity they can be stitched in tandem using one continuous bar.
  • Fill and seal fissure to prevent the ingress of water
  • Depth of the slots should be 30mm on single leaf brickwork and 45mm on a solid double brick wall. Thicker walls should be stitched from both sides.
  • Bars should be spaced at 300mm to 450mm intervals

When repairing fractures in rendered walls the reinforcing bars can be installed directly into the brick units to bind them together and, where shear strength is an issue, to permit the use of diagonal rein­for­cement. Stitching offers a quick, easy and reliable method of restoring the structural integrity of cracked walls at cost effective prices.

Product Specifi­cations

  • Helical Bars: 304 Grade stainless steel
    • Diameter: 5, 6, 7, 8 and 9mm
    • Available Lengths: 1.0, 1.5 and 2.0 metres and in 7metre coils.
    • Tensile strength: 1050-1200N­/mm2
  • Bonding Grout: Polymer modified cement based formulation
    • Compressive Strength:­55N/­mm2
    • Tensile Strength: 5N/mm2
    • Flexural Strength:­12N/­mm2
    • Youngs Modulus:­13N/­mm2

As a market leader in the supply of the best retrofit rein­for­cement products in the UK, Twistfix are able to offer technical advice on crack stitching techniques that repair cracks permanently, irrespective of whether they are built from brick, block or stone. Simply call our help line to speak to a masonry crack repair expert.