Building settlement and expansion joint waterproofing process

The invention relates to the technical field of building expansion joints, and discloses a building settlement and expansion joint waterproofing process. The process comprises the following steps of step 1, finding and analyzing the leakage reason of an existing expansion joint; step 2, determining a new waterproof construction scheme; step 3, selecting a waterproof material; and step 4,carrying out waterproof construction operation, specifically, S1, cleaning the two sides of the expansion joint to the concrete base surface; S2, leveling the surface of the expansion joint; S3, carrying out basic treatment; S4, cleaning a base layer; and S5, paving the waterproof coiled material. The building settlement and expansion joint waterproofing process has the advantages that the overall sealing performance and sealing quality can be greatly guaranteed, and the waterproof performance of the expansion joint is good. 本发明涉及建筑伸缩缝技术领域，且公开了一种建筑物沉降及伸缩缝的防水工艺，包括如下步骤：步骤一：对现有伸缩缝的渗漏原因进行找寻分析；步骤二：确定新的防水施工方案；步骤三：选用防水材料；步骤四：防水施工操作、S