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Owing to its helical shape and excellent mechanical properties Bar Flex has a vast use as remedial wall ties and masonry connectors. The hardened fins can be easily driven through the masonry units providing additional interlock and grip. Even a relatively short embedment in the masonry can develop strong anchorage force in the wall while maintaining its flexibility.
Retro Flex is a more robust solution for remedial wall ties fixings, which enables proof testing of the anchorage in the far leaf and improves the anchorage in the near leaf. It is an ideal solution in case strict testing regulations are in place or when the near leaf walls are weak.
Made from Grade 304 or 316 stainless steel
Tensile strength exceeds 10kN
Fire resistance: 30+ minutes
Hard outer fins grip into masonry
Soft core allows flexibility and absorbs stress
Standard walls: 2.5 ties per m² (450 mm vertical / 900 mm horizontal)
Minimum: 1.25 ties/m² (600 mm vertical / 1250 mm horizontal).
Around openings: Max. 300 mm vertical spacing and within 225 mm of edges
Leaves <90mm thick: 5 ties per m²
Custom densities: Higher tie densities are acceptable when needed — lower densities are not recommended
Retro Flex can be randomly tested as required before filling the near leaf hole. Testing should follow BRE Digest 401 guidelines using a Target Load Test Unit, ensuring reliable anchorage in both the near and far leaf.
Typical proof load: ≤ 1 kN.
