Construction World November 2015

ROOFING

HVAC units, piping and more, without violating thermal expansion and contraction of the roof. Top quality clamps, such as the S5 range, may be attached to the ribs without penetrating the roof sheet, thus preserving metal material warranties as well as installation warranties on water-tightness. Safintra’s range of roofing products include both pierced (Widek™, Trimflute™, Fluteline, Classicor Corrugated and Tufdek IBR), and concealed fix profiles (Saflock 700 for wider sheet coverage, and Saflok 410 with extra lock down for challenging wind conditions). Safintra also manufactures the Versatile™ profile, which combines the structural benefits of a continuous steel sheet with the aesthetic appeal of a tile. Their products are renowned for their strength and modern visual aesthetic by archi- tects, quantity surveyors, specifiers and interior designers alike. The complete roofing solution includes accessories, flashings and closures, Fixtite fasteners and S5 clamps, which are suitable for most panel and fixture attachment onto roofs. Cleardek multi-wall polycarbonate sheet products allow the ingress of natural light, yet is strong and provides insulation. These products and services are backed up by a dedicated team of technical advisors and engineers. Safintra forms part of the SAFAL Group, which boasts operations in over 11 African countries.

lap, thus avoiding the need to pierce the sheet to secure it. The Newlok mobile mill, which can be transported on-site, rolls the steel forms for the profile in continuous lengths of up to 120metres. Benefits of Newlok include: • The system is suitable for use on extremely low-pitched roofs. • Unique profile offering either a snap- together interlock, or a snap-and-seam locking mechanism for optimum wind stability. • Exceptional hold down strength in excess of 3 kPa on negative wind uplift on the seamed profile. • Interlocking system allows natural thermal expansion and contraction, without unclipping between purlin supports. • Wide purlin supports for economical design. • Concealed fasteners provide increased security, as roof sheets cannot easily be removed from the outside. Metal roofing is making a comeback in house design for its environmental credentials (100% recyclable) and practical values as it is long wearing, unique and low maintenance – and for aesthetic value. When seamed, the standing ‘rib’ provides the perfect attachment substrate for above roof installations such as solar PV panels,

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CONSTRUCTION WORLD NOVEMBER 2015