Remedial Wall Ties

Prior to 1978, wall ties were usually manufactured from galvanized mild steel. These ties were expected to last the lifetime of the building, but for many years it has been recognised that some of these wall ties have corroded after only 15 or 20 years. When these ties corrode, they can expand to seven times their original thickness. This causes the brickwork to crack at the mortar joints and can result in major damage and sometimes the collapse of walls.

Used when tying together two leaves of solid materials, this tie has mechanical expanders at each end. Requires 10.5mm hole.

Lengths:
195mm for 50-70mm cavities
220mm for 71-95mm cavities
250mm for 96-125mm cavities
300mm for 126-175mm cavities

For use when the material in the inner leaf is perforated, of low-density or friable material. A resin fixing may be used to eliminate any imposed stress. Requires 10.5mm hole.

Lengths:
195mm for 50-70mm cavities
220mm for 71-95mm cavities
250mm for 96-125mm cavities
300mm for 126-175mm cavities

Used where mechanical expanders are unusable. Normally inserted into a 10mm hole, but if test facilities are required, a 12mm hole must be used.

A plastic sieve can be used to retain resin and is particularly useful in perforated brick or hollow blockwork. A 12mm hole is required to fit sieve.

Lengths:
180mm for 40-60mm cavities
200mm for 61-80mm cavities
220mm for 81-100mm cavities

Stainless Steel ribbed bar, resin-grouted into the inner and outer leaves.

Lengths:
As required. Diameter 6, 8mm

Used where bricks are removed then replaced in the outer leaf. The wavy end is resin-bonded into the inner leaf in a 10mm hole. The triangular end sits in a bed joint. Ancon AC31 can be supplied with a drip or a neoprene ring.

Lengths:
175, 200, 225mm

Similar to the AC 31 but cranked by 25mm to aid fixing to the inner leaf

Lengths:
175, 200, 225mm

Used for the repair of mass brickwork with an unbonded brick façade, sometimes built from snapped headers. The T end is built into the bed joint and perpend, and hidden when the brickwork is repointed.

Lengths:
200, 250, 300mm (4.7mm diameter)

Used for tying the two leafs of a cavity wall or separating wall where the first leaf has already been built. The wavy end is resin-bonded into the existing wall in a 10mm hole. The tie is based on the Staifix HRT4 and has similar properties.

Lengths:
200, 225, 250mm

This is designed as a remedial tie for a separating wall. It will normally be inserted in 10mm holes and resin-bonded into both leaves. It meets the requirements of a Type A wall tie to Approved Document E.

Length:
225mm

New from Ancon, the Staifix-Thor Helical Crack Stitching Kit is a high strength, non-disruptive solution for the permanent repair of cracked masonry. Click here for more information.