确定（屋顶）防水堵漏方案：
determine the waterproof plugging scheme:
堵漏前必须进行现场调查，摸清现场施工情况，分析渗漏水的缘故原由，查清漏水部位、裂缝、裂纹或穿孔的宽度、长度、深度和贯穿情况，并了解雨天和晴天的漏水情况，测量漏水的流量与流速等，通过充分调查，精确拟定堵漏方案，做好各项预备工作。
Must conduct on-site investigation before plugging, to find out the site construction conditions, analysis of the causes of seepage Water Leakage, identify Water Leakage parts, crack, crack or perforation of the width, length, depth and penetration, and to understand the situation Water Leakage sunny and rainy days, the Water Leakage measurement of flow and velocity and so on, through the full investigation, plugging scheme is correct to do the preparatory work.
材料性能特点：
2 material properties:
油性聚氨酯注浆材料与水即反应，因为水参与了反应，浆液不会被水稀释冲走，这是其他灌浆材料所不具备的好处，浆液在压力作用下，灌入混凝土缝隙或孔洞，同时向缝隙四周渗透（百度排名优化），继承渗入混凝土缝隙，最终形成网状结构，成为密度小，含水的弹性体，有优秀的适应变型能力（河北人事考试中心），止水性好。
Oily polyurethane grouting materials and water reaction, because the water in the reaction, the slurry can not be diluted with water washed away, this is the advantage that other filling materials do not possess the slurry under pressure, pouring concrete cracks or holes, at the same time to penetrate the gap around, continue to penetrate into the concrete cracks, and ultimately the formation of network structure, a density a small, elastic body water, has a good ability to adapt to change, good waterproof.
灌浆孔的设计和布孔：
3 design and hole filling:
灌浆孔的布孔有骑缝和斜孔两种情势，根据现实情况和必要加以选择，需要时两者并用。
The grouting hole hole perforation and inclined hole two forms to choose according to the actual situation and needs, and both when necessary.
（1）灌浆孔的设计：灌浆孔的位置，应使孔和漏水裂缝闲暇相交，并选在漏水量最大处。
(1) the design of the grouting hole: the location of the grouting hole, should make the hole and the gap between the water leakage cracks, and selected in the largest amount of water leakage.
（2）布孔原则：注浆孔眼的位置和数量，需根据不同漏水情况进行合理安排，以导出漏水为目的，在集中漏水处布孔，裂缝大、水流量大则孔距大（江苏人事考试中心），缝隙小则孔距小。
(2) hole principle: the position and number of grouting holes, need reasonable arrangement according to different Water Leakage, Water Leakage to export for the purpose of the focus at Water Leakage cloth hole, crack, water flow, hole distance, small hole distance and small gap.
