Twistfix

Crack Repair

Crack repair products strengthen cracked walls by enhancing the tensile, flexural and shear strength of masonry using various brick rein­for­cement techniques.

Cracks are usually caused by structural movement attributable to temperature variations, chemical reactions, age deteri­ora­tion or changes in the moisture content of brickwork, or in the ground that supports it. Once there is as fracture it is no longer a composite structural unit.

Typical defects that may trigger cracks include any one or a combination of:

  • Ground movement – Subsidence, land slip or heave
  • Inadequate support – Localised foundation failure, lintel failure, masonry arch failure, etc.
  • Insufficient restraint – Lack of wall ties, restraint straps, poor bonding, etc.
  • Resizing – Expansion or shrinkage due to thermal or moisture variations
  • Rusting metals – Wall tie corrosion, expansion of hoop irons or fixings, etc.

Before a crack repair can be done the cause of the fracture needs to be established and eliminated.

Generally crack repair strategies fall into one of two categories:

  • Sub-structure repairs for below ground foundation movement issues, typically an insured risk
  • Supers­truc­ture rein­for­cement for above ground building defects, typically an uninsured risk

Sub-structure repairs may include underpinning or piling.

Supers­truc­ture rein­for­cement generally includes structural repairs accomplished by the insertion of helical bars that form retrofitted brick beams or are used for crack stitching. Replacement wall ties and restraints tie cavity or separating façade walls whilst resin injection systems efficiently fill and seal cracks in walls

Once the cause of the fracturing has been eliminated then all that is required is to reinforce the cracked masonry so that it once again acts as a composite structural unit. Crack repair techniques include mechanical brick stitching and crack injection resins, whilst various tie and restraint systems help to transmit and share loads.

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Helical Bars 7M Long Kit

Helical Bars 7M Long Kit

Helical bars in a kit for retrofit masonry rein­for­cement. High tensile 6mm x 7mm reinforcing bars, grout and fixing kit for structural repairs or for forming window-spanning brick beam lintels
RRP
£426.00
Price incl. VAT
£298.56
Masonry Crack Repair Kit

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
Price incl. VAT
£119.52
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.
RRP
£249.78
Price incl. VAT
£191.40
Crack Stitching Bars

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
Price incl. VAT
£53.40
Wall Anchor Kit - 910mm Spiral Fixings - 10 Ties

Wall Anchor Kit - 910mm Spiral Fixings - 10 Ties

A Wall Anchor Kit with long-series drive-in wall ties that form a chemical-free structural connection. Quick and easy to install with no material compa­tibility issues. 10pcs 910mm ties, SDS Tool and 1m drill bit
RRP
£316.85
Price incl. VAT
£239.52
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
RRP
£63.00
Price incl. VAT
£47.76
Crack Sealer Plus

Crack Sealer Plus

Crack Sealer Plus is a pure injection filler designed to bond those hard to fill narrow cracks in bricks, blocks, render and concrete. Small flexible nozzles enables masonry cracks as fine 2mm wide to be filled and sealed.
RRP
£59.51
Price incl. VAT
£46.55
Crack Stitching Kit

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
Price incl. VAT
£83.70
Masonry Crack Reinforcement - HD

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
Price incl. VAT
£79.80
Structural Repair Ties - 10Pk

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
Price incl. VAT
£199.50
Brick Reinforcement

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
Price incl. VAT
£43.80
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
RRP
£1134.00
Price incl. VAT
£537.84