Helical bars installed in mortar courses, or drilled in through the masonry itself, to traverse cracks or to provide structural connections across movement joints. The helical (Helifix and Thor) system provides a versatile means of restoring structural integrity to buildings and structures where the masonry has cracked or failed as a result of ground movement, weathering and increased loads and stresses. The rapid installation procedure minimises disruption and provides economical solutions to many structural problems. Suitable for use on historic and listed structures (English Heritage approved) and all Thor approved schemes are available with a 10 year insurance backed structural warranty.