To enhance drainage and execution by providing a water channel along one diagonal line of a planar square plate-like body.
Thicknesses of two sides of a planer square plate-like body are same with each other, shape in which the thickness is gradually thinned toward the top direction of one of the plate-like body, i.e., a sloped insulating material with a water channel 4 is constituted with the water channel on one diagonal line. Next, the shape of the cross section orthogonally intersected with the water channel is substantially V-shaped or U-shaped on any region, water is always collected on the diagonal line, and guided into the downstream side. Next, the conventional sloped insulating material C and the sloped insulator 4 are disposed on bed material such as an ALC panel, a waterproof sheet is stuck on the surface, and a sloped roof is completed. Since the sloped insulating material 4 is square, it can be user for execution of the roof as it is, the sloped roof having the water channel toward a roof drain can be easily formed by combination of the sloped insulating materials C, 4, and execution and drainage can be enhanced.
SUZUKI ETSUJI
SENDA HITOSHI
HORIE YASUNORI
DAIWA HOUSE IND
KANEGAFUCHI CHEMICAL IND