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Capabilities · Standing seam
SA Construct is an Adelaide cladding, roofing and facade contractor, founded in 2011 and based in Beverley, and a Master Builders SA award winner since 2014.
Standing seam is a metal roof or wall sheet joined at raised seams and held by concealed clips, so no fastener pierces the weather face. It comes in steel, aluminium, zinc and copper, as snap-lock profiles or double-lock seams closed on site. We install standing seam roofs and walls for architects and head contractors across South Australia.
Delivered on: snap-lock standing seam cladding in five Colorbond colours on Findon Technical College, and long sheets milled on site at Whyalla Secondary College and on Kangaroo Island at Southern Ocean Lodge.
Projects
Buildings with standing seam or long sheets milled on site. Open any of them for the details and the photos.
For flat-pan, concealed-fix and pierced-fix roofs on commercial and industrial buildings, see commercial metal roofing.
Zinc and copper need a ventilated or structured underlay so the underside stays dry. The roof build-up carries a vapour-permeable membrane to AS 4200.1, the Section J insulation layer and, on Class 2 buildings, the NCC Part F8 condensation requirements. Sliding clips and expansion joints suit the metal: zinc runs are usually broken at around 10 to 15 m, steel runs can go longer. On walls, the clip spacing is designed for the AS/NZS 1170.2 wind pressure and the full build-up needs an AS 1530.1 position.
More of this work by sector: technical colleges and schools, and Southern Ocean Lodge and visitor centres.
Questions
All three hide the fasteners. Double-lock standing seam is a folded seam closed on site with a seaming tool, used for zinc, copper and aluminium. Snap-lock profiles clip over a concealed clip without seaming. Concealed-fix steel profiles such as Fielders FreeForm and Lysaght Klip-Lok are roll-formed and clip-fixed. Double-lock is the most weathertight at low pitch and the usual choice for curved and tapered zinc.
Yes, with a mobile mill. The coil is rolled into sheets at the building, so a run can be longer than a truck can carry. We have milled long sheets on site at Whyalla Secondary College and on Kangaroo Island at Southern Ocean Lodge.
Zinc and copper need a ventilated or structured underlay so the underside stays dry, because water trapped against bare zinc causes white rust. Pre-weathered zinc products carry engineered backside coatings that reduce the risk. They still need a drained, ventilated build-up.
Double-lock standing seam with sealed seams is commonly accepted down to 3 degrees, and lower with seam sealant and the manufacturer's written approval. Snap-lock generally needs a steeper pitch. The engineer and the manufacturer's technical office sign off anything below 3 degrees.
Yes. The same profiles run vertically or horizontally as rainscreen wall cladding over a drained cavity. Findon Technical College has snap-lock standing seam wall cladding in five Colorbond colours. Wall applications need wind-pressure design for the clip spacing and an AS 1530.1 non-combustibility position for the full build-up.
Convex and concave curves are made by crimp-curving or stretch-curving the profile, or by choosing a profile flexible enough to lay to a large radius. The minimum radius depends on the metal and the profile, so the supplier's curving limits are checked before the architect's geometry is locked.
Send sketches or a specification through our tender page, email tenders@saconstruct.com.au or call +61 8 7123 0833. Tell us the profile, metal, radius and longest run you have in mind.
