| 摘要 |
The insulation structure 30 comprises an insulation portion 34 with recesses 32 defined thereon. A water permeable sheet 42 overlies the recesses to define a number of voids suitable for receiving and directing water to drain moisture. The recesses may extend in two orthogonal directions which may not be parallel to the edges of the insulation structure. The recesses may be defined by a shaped or profiled sheet provided on a major surface of the insulation structure. Also claimed is an insulation structure 30 which comprises first and second insulation portions 34 and 36 with a spacing structure 38 between the two to define a void 40 operable to receive and direct moisture across the insulation structure. The insulation structure may be configured to interlock with adjacent structures by using co-operative inter engaging formations along its edges. A pair of insulation may be connected together using a corner connector.
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