Tray Roofing Materials

Traditionally standing seam roofs were manufactured from sheets of copper or pure zinc (sometimes even lead) and these materials are still popular being naturally durable and weathering to a natural patina.  They are also very malleable which allows more variation in intersections and terminations, and they can be soldered.

More common in the New Zealand market are pre-painted steel and aluminium substrates. To increase its formability, Steel is normally supplied in Medium Strength G300 grade and Aluminium in hardness grade H34.

See Materials for a more thorough discussion of roofing material.

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2 - Editing and rearrangement
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Renamed the clause to Tray Roofing Materials. Some minor edits.

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