double skinned roofs are incredible One of my exploration...

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    double skinned roofs are incredible

    One of my exploration vehicles had a double metal roof - top was steel, 25 mm gap and aluminium skin below.

    In 45 or more in full sun in WA - you could always put your hand on the roof from the inside - it was warm on the hottest days.

    And when the sun went down - the heat inside dissipated rapidly. Amazing really, just for 2 sheets of metal
 
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