| 摘要 |
PURPOSE:To suppress rise in temperature at the rear of a roof effectively, prevent building materials inside the roof from being damaged by dewing, and also prevent a worker from feeling itchy uncomfortableness. CONSTITUTION:The both faces of a plate inorganic fiber system heat insulating material 12 are covered with permeable surface covering materials 13 and 14 of 1.5m<2>.h-mmHg/g or less in water vapor permeable resistance. Also at least one side surface covering material 13 shall have a glossiness of 600% or more in glossiness measured by the method in accordance with JIS Z-841. The density of the inorganic fiber system heat insulating material 12 must be desirably 30 to 70kg/m<3>, and the thickness of it must be desirably 20 to 100mm. Then a roof heat insulating material 11 is arranged by arranging vent layers inside the roof material. |
