第二层露天平台防水工程施工工艺，程序须知 1 原楼板填缝，各坑洼处抹平。（作用：节约防水材料） 2 地脚线位置，开凿凹进2cm。（柔性防水材料，必须用沙浆覆盖）
3 地面除灰尘，沙粒。 并且楼面须干燥一天。（增加防水的附着性）
4 采用有弹性的沥青油材料，滚涂仔细不留死角。（弹性须适应南非约翰内斯堡的昼夜巨大温差，不发生脆裂）
5 在沥青油防水层上，覆盖纤维布。
6 在纤维布上再重复滚涂沥青材料一次。（增加强度和防水性能）
7 覆盖塑料薄膜膜后。做7天闭水试验。不漏水，成功防漏后，进入下一步工序。（及时发现并整改，减少更大的损失）
8 膜上铺设钢丝网，轻拿轻放，保护好防水层。用沙浆做走水坡面面。保证有5cm落差。落水口为两110管。（不积水，雨水流走快速）
9 干燥后，在走水坡面上涂刚性聚合物防水剂。（防止砂浆层存水。注意：室内浴室防水只需此道工序） 10 铺设地砖，留0.5cm砖缝。用膨胀性水泥填缝。
The first floor open platform waterproof project construction proce, program instructions 1 original floor seam filling, each place certainly some pits.Function: save (waterproof material), 2 the anchor line position, digging 2cm instead.Flexible waterproofing materials, must (with mortar) 3 ground remove dust, sand.And the floors shall be dry.(the adhesion) increased waterproof 4 using elastic material, coating of asphalt oil not carefully.Johannesburg, South Africa (elastic must adapt to the huge difference does not occur embrittlement), 5 oil in asphalt waterproof, covering fiber cloth.6 in fiber cloth repeat roll asphalt material.(to increase the intensity and waterproof properties), 7 cover plastic membrane.Do 7 days shutting water test.Don\'t slack, leakproof, after the succeful entering the next procedure.Timely discovery and rectification, (reduction greater lo), 8 the laying of steel wire, membrane gently with good protection of waterproof.Do everything with mortar don slope.Ensure 5cm gap.Water mouth for two 110 tube.(don\'t run fast, rain water),
