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RST
RST
Restraint Strap Twist
The RST is a high performance strap which can be used to resist uplift.
Z275 - 30 x 1.2mm
Galvanised Mild Steel
Up to 11.80kN
Characteristic Tensile Capacity
Unique geometry allows a fixing on two planes without the clash issues of standard twist straps
Suitable for timber frame and masonry walls
Can be used independently or in addition to truss clips/framing anchors/hangers
Also a suitable strap for providing lateral restraint to timber gables
Lighter than traditional twist straps reducing manual handling risk
Achieves greater tensile capacity before reducing centres enabling us to outperform competitors’ solutions
Installation videos available for all detailed applications
Masonry Fixings to be specified by the building designer.
Paslode 3.4 x 35mm Electrogalvanised Square Twist Nail
Cullen products have been tested and CE marked to the requirements of ETAG015 using 3.4 x 35mm square twist nails.
Masonry Fixings to be specified by the building designer.
Application: Truss to masonry walls
Every truss specified by the building designer.
Application: Gable restraint System
1200mm centres
Every truss is specified by the building designer.
Refer to Cullen Restraint Straps and Gable Restraint Technical guides.
Cullen RST-3 restraint straps at maximum 1200mm centre fixed to longitudinal truss bracing / additional longitudinal bracing with 8 no. 4 x 25mm steel screws fixed to gable panel stud with 3 no. 3.4 x 35 mm square twist nails.
Twisted Strap To Truss
RST strap to be nailed to truss with 3.4 x 35mm square twist nails. Nail quantity dependant on uplift value. Fixings into masonry to be specified by building designer.
Nail quantity dependant on uplift value.
Fixings into masonry to be specified by building designer.
Installation Guidance
Explore the step-by-step RST installation video
The video demonstrates best practice on site, highlighting each stage of the installation process to help ensure accuracy, consistency, and compliance during fitting.
Support you can rely on
Expert technical guidance and customer service, from design to site.