Twistfix
Crack Repair
Crack repair products strengthen cracked masonry walls by enhancing the tensile, flexural and shear strength of brickwork using various brick reinforcement techniques. Sealing fissures with appropriate fillers help to restore compressive strength and protect against water infiltration and frost damage.
Cracks are usually the result of the structural movement of part of a building. The displacement may be historic, cyclic or on-going. Predictably, a masonry structure can move when it exposed to the effects of variations in temperature, chemical reactions, age deterioration, vibration or changes in the moisture content of brickwork, or the ground that supports it. Once a wall fractures, 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.
Identifying and eliminating the cause of the fracturing is essential in ensuring the lasting success of a masonry repair scheme.
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 crack stitching systems Replacement wall ties and restraints tie cavity walls or separating façades, whilst resin injection products efficiently fill and seal cracks in walls
After resolving the source of faults or weakness, fill the cracks and reinforce the zone of brickwork that has fractured to ensure once again it performs like an integrated structural unit. Crack repair techniques include mechanical brick stitching and crack injection resins, whilst various tie and strapping systems help to constrain further movement by transferring and sharing loads.
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1–12 of 39 items
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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
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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
- Price incl. VAT
- £298.56
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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
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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
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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
- Price incl. VAT
- £53.40
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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
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Wall Anchor Kit - 910mm Spiral Fixings - 10 Ties
Wall Anchor Kit with extra-long drive-in wall ties. Quick and easy to fit chemical-free structural connectors, no material compatibility issues. 10pcs 910mm ties, SDS Tool and 1m drill bit
- RRP
- £316.85
- Price incl. VAT
- £239.52
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Crack Stitching Kit
* 10 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
- £188.40
- Price incl. VAT
- £119.52
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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
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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
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Crack Stitching Rods - 100 Pack
Contractors pack of 6mm high tensile helical bars for stitching and reinforcing areas of fractured brickwork - Length 1m - Pack of 100 pieces
- RRP
- £570.60
- Price incl. VAT
- £348.00
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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.
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