| 摘要 |
PROBLEM TO BE SOLVED: To effectively prevent the scatter of dust of asbestos or the like from a broken part of an existing roof. SOLUTION: A covering material is stuck to the whole surface of an existing asbestos slate roof material 51 to form a covering layer 20, and a plurality of rafters 25 for ventilation extending in a ridge direction from the eaves are fixed onto the asbestos slate roof material 51. A heat insulating material 26 is then fitted and fixed between the rafters 25 for ventilation. A roof ventilating layer 27 extending in the ridge direction from the eaves is formed between the heat insulating material 26 and the asbestos slate roof material 51, and a metal roof material 30 is constructed on the heat insulating material 26. COPYRIGHT: (C)2007,JPO&INPIT
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