Retrofit Wall Connectors are long-series spiral fixings that are used to tie the facade of a building a wall that runs perpendicular to it. The 12mm diameter self-tapping ties are driven deep into masonry to form a mechanical connection that needs no cement, grout or resin, making them ideal for use when connecting walls on heritage houses, listed buildings and ancient monuments.

The heavy-duty 12mm diameter building ties are available in three lengths 610mm (24"), 760mm (30") and 910mm (36"); they have twice the strength of any other self-tapping spiral wall ties of similar design.  The connectors corkscrew into brick, block, limestone and concrete, when hammer-driven into an 8 or 10mm pilot bore, to offer outstanding resistance to compression, tension and shear loads

Manufactured from 316 marine grade stainless steel and with a cross sectional area of 28mm², the structural connectors are ideal for pinning arches and re-connecting wall junctions, such as at corners and at party walls without the need for bonding agents, alleviating issues of material compatibility that often arise when cement grouts are used in old or listed buildings with lime mortar.

To install the Retrofit Wall Connectors simply drill the pilot holes and drive-in using a proprietary SDS adaptor.  The material cost of this heavy-duty 12mm spiral fixing system is similar to that of using traditional 8mm spiral bars with a proprietary cement grout and is at least 10 times as faster to prepare and install, delivering exceptional savings in labour costs.

In addition to tying walls to cross walls and party walls, these versatile structural masonry connectors are ideal for use on on brick or stone buildings to secure quoins, tie thick or rubble filled walls, pin masonry arches or to introduce vertical reinforcement to parapet walls.

• Less disturbance caused to buildings than with any other retrofit system
• Can be used at any temperature including sub-zero conditions
• No material compatibility issues on old historic buildings with lime mortars
• Cost effective with rapid installation rates

Retrofit Wall Connectors are UK designed and manufactured by Thor Helical under Patent No: GB 2439633.