1、聚氨酯的防水基层应按设计要求用1∶3 的水泥砂浆抹成1/50 的泛水坡度，其表面要抹平压光，不允许有凹凸不平、松动和起砂掉灰等缺陷存在。排水口或地漏部位应低于整个防水层，以便排除积水。有套管的管道部位应高出基层表面20mm 以上。阴阳角部位应做成半径10mm 的小圆角，以便涂料施工。
1, waterproof polyurethane should be according to the design requirements for 1 to 3 of the cement mortar with 1/50 flashing slope, the surface should be smooth light pressure, rugged, loose sand and dust and other defects are not allowed. Drain or floor drain should be lower than the entire waterproof layer, in order to remove stagnant water. The pipe position with casing shall be above 20mm above the base surface. The angle of yin and Yang should be made into a small radius of 10mm, so that the paint can be constructed.
2、所有管件、卫生设备、地漏或排水口等必须安装牢固，接缝严密，收头圆滑，不得有任何松动现象。
2, all fittings, sanitary equipment, floor drain or drain must be firmly installed, tight seams, head smooth, no loose phenomenon.
3、施工时，传统聚氨酯防水涂料施工时，防水基层应基本呈干燥状态，含水率小于9%为宜，其简单测定方法是将面积为1㎡、厚度为1.5——2.0mm 的橡胶板覆盖在基层面上，放置2——3 小时，如覆盖的基层表面无水印，紧贴基层一侧的橡胶板又无凝结水印，根据经验说明其含水率已小于9%, 符合施工要求。我公司生产的911型聚氨酯涂料无这项要求，只要基层无明水即可施工。
3, the construction, the traditional polyurethane waterproof coating construction, waterproof base should be basically in dry condition, the water content of less than 9% is appropriate, it is a simple method to determine the rubber plate area of 1 square meters, the thickness is 1.5 —— 2.0mm coverage at the grassroots level, place 2 to 3 hours, such as covering the base layer surface no watermark, one side of the rubber plate base condensation watermark close, according to the experience that the moisture content is less than 9%, to meet the construction requirements. The 911 type polyurethane coating produced by our company is no such requirement, as long as the basic construction can be no water.
4、铝型材发泡设备建议施工前，先以铲刀和扫帚将基层表面的突起物、砂浆疙瘩等异物铲除，并将尘土杂物彻底清扫干净。对阴阳角、管道根部、地漏和排水沟口等部位更应认真清理，如发现有油污、铁锈等，要用钢丝刷、砂纸和有机溶剂等将其彻底干净。
4, before the construction, with blade and a broom to bumps on the surface of the base, such as mortar bumps and dust debris to completely clean. On the corner, pipe root, floor drain and drainage should be carefully cleaning Mizoguchi and other parts, if there is oil, rust, use wire brush, sandpaper and organic solvent to be thoroughly cleaned.