Wall Ties and Restraint Fixings

Corrosion of Cavity 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.

 

Ancon 63 Mechanical/Mechanical

 
AL Batavon Distributors Remedial Wall Ties mm63  
 

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

 

Ancon 63 Resin/Mechanical

 

AL Batavon Distributors Remedial Wall Ties rm63

 

 

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

 

Staifix Resin/Resin

 
AL Batavon Distributors Remedial Wall Ties Staifix 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.

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

 

Stairib Bar

 

AL Batavon Distributors Remedial Wall Ties Stairib Bar

 

 

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

Lengths:
As required. Diameter 6, 8mm

 

Ancon AC 31

 

AL Distributors Remedial Wall Ties Ancon AC31

 

 

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

 

Ancon AC 31C

 
AL Distributors Remedial Wall Ties Ancon AC31C  
 

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

Lengths:
175, 200, 225mm

 

Cameron T 47

 

AL Distributors Remedial Wall Ties Cameron T47

 

 

Used for the repair of mass brickwork with an unbonded brick fa�ade, 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)

 

HRT4/R

 
AL Distributors Remedial Wall Ties HRT4  
 

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, 225mm

 

Type A R/R

 

AL Distributors Remedial Wall Ties Type A R/R

 

 

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

 

Staifix-Thor Helical Crack Stitching Kit

 

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 details.