| 摘要 |
A cladding system includes an upper board 3 with a bottom edge recess 7 and a lower board 2 with an upper edge tongue 4, and an extrusion 1 with an external face 11, a lower board engaging portion 5 receiving the protruding tongue 4 of the lower board and an upper board engaging portion in the form of a tongue 6 engaging the recess in the bottom of the upper board. The extrusion is mounted on the lower board, attached to the framing using a fastener 9 through the upper projection 8 which also serves to provide support 10 for the upper board, and then the upper board is engaged with the extrusion, and so on, to clad the wall.
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