armaseam-technical-brochure
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Metal Roofing Systems Page Title Alumasc Standing Seam Metal Roofing Systems Alumasc Technical Helpline 01744 648400

Metal Roofing Systems Standing Seam Metal Roofing Systems Armaseam Introduction System Overview Armaseam in Stainless Steel Armaseam Roof System Options Design and Installation The four elements are: ■ Armaseam Standing Seam Metal Roofing Systems ■ Metal Eaves & Drainage Systems ■ Alumasc FTP Flat to Pitched Roof System ■ Insulated Gutter Systems Each element can be specified and detailed individually, but can more effectively form part of a unique package covering water collection on the roof and its safe disposal to ground level. Site Manufacture Standing Seam Metal Roofing Systems is one...

Metal Roofing Systems Standing Seam Metal Roofing Systems Armaseam Introduction Armaseam in aluminium with PVDF silver metallic coating, Smaralind Shopping Mall, Reykjavik Alumasc Technical Helpline 01744 648400

Metal Roofing Systems Standing Seam Metal Roofing Systems Armaseam Introduction Introduction to Armaseam Alumasc Armaseam is a standing seam metal roofing system based on the tried and tested principle of zip-up roofing. It is maintenance free, totally weatherproof with no penetrative fixings, and will provide outstanding performance for the life of the building. Armaseam panels are roll formed from continuous strip coil to any required length, and then mechanically seamed together onto secret-fixed clips. The result is an integral roof covering that has no joints or end laps and makes...

Metal Roofing Systems Standing Seam Metal Roofing Systems Armaseam Features and Benefits Features and Key Benefits Alumasc Armaseam is an extremely versatile, high performance standing seam roofing system that forms a completely weathertight skin and offers significant benefits: ■ No holes or penetrative fixings ■ No joints or laps ■ Suitable for low pitch – down to 1.5 degrees ■ Can be fixed vertically ■ Choice of materials and finishes ■ Virtually maintenance free ■ Panels can be curved ■ System is watertight but not airtight and allows breathability ■ No reliance on mastics or sealants ■...

Metal Roofing Systems Standing Seam Metal Roofing Systems Armaseam System Overview System Overview Armaseam panels are manufactured in a choice of 300 and 400mm widths, with a standard 65mm seam height. The Armaseam system does not rely on mastics or sealants to ensure weathertightness. However, the closed seam does permit any moisture trapped within the construction to vent through to the outside atmosphere, effectively allowing the system to breathe. A capillary groove rolled into the lap of the panel prevents moisture being drawn through the seam. Alumasc Armaseam roofing is extremely...

Metal Roofing Systems Standing Seam Metal Roofing Systems Armaseam System Overview Thermal movement The Armaseam system is designed to permit the thermal movement of panels which will occur, especially on larger roofs. Aluminium panels, for example, will typically expand by 1mm per metre of roof panel. The colour and finish of the roof may cause this figure to vary, with dark colours attaining higher temperatures. However, the panel movement is accommodated by the panel sliding over the head of the fixing clip. The thermal movement is controlled by the introduction of a ‘fixed point’ in the...

Metal Roofing Systems Standing Seam Metal Roofing Systems Armaseam System Overview System Overview Insulation Armaseam roofs can be insulated to satisfy project requirement and Document L2. The new guidelines laid down by the BRE are designed to improve the thermal performance of all buildings, with a minimum standard Uvalue laid down. By working closely with supply partners and specialist consultants, Alumasc have modelled workable solutions for the Armaseam roof itself, and perimeter details. Natural venting The typical Armaseam roof incorporates mineral wool insulation between a metal...

Metal Roofing Systems Standing Seam Metal Roofing Systems Armaseam System Overview Vapour control Alumasc recommend the incorporation of a vapour control membrane within the Armaseam roof build-up to restrict the movement of water vapour from inside the building into the construction. This membrane should always be installed on the warm side of the insulation layer. Particular attention should be given to detailing at the perimeter and around penetrations to ensure vapour-tightness is maintained. Installation of vapour membrane and halters, Schipol Airport, Amsterdam Acoustics The Armaseam...

Metal Roofing Systems Standing Seam Metal Roofing Systems Armaseam Aluminium Armaseam in Aluminium Armaseam in mill finish aluminium is offered in either plain or stucco embossed form. Newly produced, the metal has a very bright appearance. However, exposure to the atmosphere quickly encourages an oxide patina to form which protects the metal from longer term attack. The fully developed patina colours to a matt grey finish which requires no A testament to the longevity of aluminium – Eros, Piccadilly Circus decoration and little long term maintenance. Aluminium is the most abundant metal in...

Metal Roofing Systems Standing Seam Metal Roofing Systems Armaseam Aluminium Armaseam in aluminium with PVDF coating on canopies at Trafford Centre, Manchester Paint Finishes Painting aluminium may increase the life expectancy of the Armaseam panel, but will also ensure continuity of colour across the roof. panels once they have been formed. There is a limitation on panel length, but not on quantity, and even single panels can be powder coated to a required colour. Welding The fact that aluminium can be readily welded even in thin gauges, allows Armaseam panels to be detailed in a variety...

Metal Roofing Systems Standing Seam Metal Roofing Systems Armaseam Copper Armaseam in Copper The traditional methods of constructing ‘hard’ metal roofing with fully supporting timber decking and labour intensive detailing remain in use today. However, this form of metal roofing often appears expensive when compared with modern materials and systems. Modern manufacturing techniques now enable Alumasc to produce roof panels that do not require full under panel support or complex detailing. With Armaseam, it is possible to achieve a high performance, fully weathertight Copper is a natural...