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近年来涂膜防水材料用于屋面防水在增加。然而发现有些涂膜防水屋面的保护层是用绿豆砂做的,这显然是不妥的。因为《屋面工程技术规范》(GBJ50207-94)规定,涂膜防水层的厚度:沥青基防水涂膜在Ⅲ级防水屋面上单独使用时,不应小于8mm;高聚物改性沥青防水涂膜不应小于3mm;合成高分子防水涂膜不应小于2mm。实际施工时,涂
In recent years, waterproofing of coated film for roofing has been increasing. However, it was found that some of the protective layer of the waterproof roof was made of mung bean sand, which is obviously inappropriate. Because “Technical Specifications for Roof Engineering” (GBJ50207-94) stipulates that the thickness of coating waterproof layer: asphalt-based waterproof coating should not be less than 8mm when used alone on Grade III waterproof roof; polymer modified bituminous waterproof coating Should not be less than 3mm; synthetic polymer waterproof coating should not be less than 2mm. When the actual construction, painted