Remedial Wall Ties

Corrosion of Cavity Wall Ties

Traditionally, 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.

Ancon 63 Mechanical/Mechanical 

Used when tying together two leaves of solid materials, this tie has mechanical expanders at each end. Requires 10mm hole.

Lengths:
200mm for 35-60mm cavities
225mm for 61-85mm cavities
250mm for 86-110mm cavities
300mm for 135-160mm cavities

Ancon 63 Resin/Mechanical

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 11mm hole.

Lengths:
200mm for 35-60mm cavities
225mm for 61-85mm cavities
250mm for 86-110mm cavities
300mm for 135-160mm cavities

Staifix Resin/Resin

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.

Stairib Bar

Stainless Steel ribbed bar, resin-grouted into the inner and outer leaves. Requires 10mm Ø hole (6mm dia. bar) or 12mm Ø hole (8mm dia. bar).

Ancon AC 31

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.

Ancon AC 31C

Similar to the AC 31 but cranked by 25mm to aid fixing to the inner leaf. Requires 10mm holes.

Lengths:
175, 200, 225mm

Cameron T 47

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. Requires 12mm holes.

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