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| The Alcan aluminium product range opens up a wide variety of colour choices for your roof application, and allows for intricate detailing in double standing seam technique using rolled-formed sheet trays. |
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The term "Double standing seam" describes a type of lengthwise connection between adjacent sections above the water level. Double standing seams should be at least 23 mm high. This connection is rainproof without applying any additional measure.
The edges of the sections can be formed by roll-former or by hand. The seams can be closed either with seaming machine or by hand.
It is characterized by its sharply defined lines and by its numerous detail variations.
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The term roll cap or batten system characterizes a type of lengthwise connection in which a wooden batten or a Alcan-clip made of galvanised steel, is used to form a box-like joint. The roof panels are connected to the substrate by clips on the wooden batten (or directly by the clip), which is then covered by a capping. The three most popular systems still in use today are:
- The Belgian roll cap system,
- The German roll cap system, and
- The Alcan-click roll cap system.
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Alcan's Astro Snap Lock System is economically viable and has the advantage of a fast installation method. It has a seam height of 38 mm and provides a look of flat trayed seam roofing.
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