Striproll SureSeam™ is a crimp sealed traditional standing seam product.
Standard panels supplied are:
26mm rib x 315mm cover
38mm rib x 295 mm cover
Striproll SureSeam™ is available in:
Colorbond® (22 standard colours)
Colorbond MATT® (6 standard colours)
Zincalume® in 0.55 BMT material thickness.
Steel grade is G300 soft feed.
Care must be taken when fitting panels with flat tray pans to avoid causing dents and creases to these unstiffened and delicate areas.
The Minimum Pitch is 3 degrees for double crimped seam roofing applications. Double seaming provides a more watertight seal but results in a different aesthetic look. Single seamed fixing may be used for roof pitches greater than 20 degrees. Maximum unsupported overhang is 60mm for roofs and 100mm for walls. Do not allow traffic on completed roof. If required provide cushioned walk boards.
Drip edges should be formed at gutters to prevent capillary caused leakages. Pans should be turned up at ridges to prevent blow by.
Panels should be fixed to:
15mm CD grade plywood substrate on max support spacing of substrate at 540mm centres or 17mm CD grade plywood substrate on max support spacing of plywood substrate at 600mm centres. All Plywood joins and edges must be flush and true. Uneven substrate may cause increased unwanted aesthetic imperfections to be visible such as an oil canning effect.
A Breathable vapour barrier such as CSR “Proctor Wrap RW” for walls or “ProctorWrap HT-R for roofing” or Fletchers “Sisalation Vapawrap Metal Roof” should be fitted beneath SureSeam™ sheeting and laid over plywood prior to fixing.
The “sheet starter rib” should be secured with a 0.55 sheet metal over-strap which is flashed over. Alternately a full-length starter over-flashing may be fitted after crimping flat the unused male rib lip. Then the under-lap of the sheet has clips secured over and fastened to the substrate with two 8g-10x25 countersunk head screws with a minimum class 3 coating. The next sheet is then fixed with the overlap placed over the fixed clips and previous sheet’s underlap and crimped together with the Striproll SureSeam™ crimping tool. Remove strippable film prior to fitting panels.
Clips must be fastened every 300mm (or 20% for the building size whichever is greater) around the perimeter as defined in AS4055 and AS1170.2. (0.2 x Building length, not less than 1.2 meters). Clips may be fixed at up to 500mm centres where not about the perimeters if fitting to plywood. Screw heads must be flush with substrate. It is important to select a flat headed screw that will not cause dents to the sheet when fitted. For sheeting longer than 4.0m it is recommended that fixed and sliding clips are used to allow for expansion and contraction of the sheet. Fixed clips are to be used at high end of sheets for 20% of the sheet length for a minimum of 3 fixed clips at 300mm centres, then fixing with sliding clips working downwards to allow for sheet expansion.
It is beneficial to have vice grips to clamp sheets together at the lap to be crimped at the top of the sheets for steep pitches and walling to secure the loose sheet while crimping is completed.
If a timber substrate is undesirable, Striproll SureSeam™ may be fixed to 0.55 BMT x 40mm high steel battens spaced at 300mm centres with fixed clips only, with a maximum sheet length of 6.000 meters. It is always preferable to fix to plywood to avoid denting of the pans and to reduce risk of thermal noise. Clips are 304 stainless and must be isolated from coated steel battens.
IMPORTANT: Do not allow any foot traffic on the roof if fitting to Steel battens to avoid denting and damaging sheeting. If required provide cushioned walk boards.
Thermal expansion of the sheeting is 2.9mm on average per 5 meters of sheet length for 50 degrees Celsius temperature change. No warranties against thermal expansion noise are provided. Fixing to steel battens may increase the amount of thermal noise generated from expansion and contraction. Using a quality vapor permeable water proof barrier may reduce noise from thermal expansion and contraction is recommended.
Some oil canning effect may be evident in this product and may be caused by a number of reasons. For example, oil canning can be due to un-trueness in the flatness of the buildings substrate, turning up or down the sheet ends, handling onsite, inherent (expected) shape in the feed coil; this is expected and common in all flat tray sheet metal products is not a product fault. No warranties are offered against the presence or occurrence of oil canning.
Coverage: +/- 4mm Sheet Length: +/- 7mm Maximum sheet length: 24.000 m Minimum sheet length 0.900 m
Remove all scrap and swarf from completed installation to prevent subsequent Staining from corrosion.
All due care has been taken preparing this information Striproll do not take responsibility for errors or omission. This document is subject to review and periodic updating as information becomes available. It is the responsibility of the roof drainage designer to decide if use of this document is suitable for the assessment of each individual project and situation. This document is intended as an aid to trade professionals specifying and installing Striproll products and not to be a substitute for professional judgement. Except to the extent to which liability may not lawfully be excluded or limited, Striproll disclaims all liability (including liability for negligence) for all loss and damage resulting from the use of information in this publication.