防水施工是隐蔽工程，后续的施工也有可能会破坏防水层，如果地砖已铺设完毕，可千万不要砸地砖，用专业的补缝防水材料，把所有的缝隙堵住做好防水就好了。也同样适用于卫生间防水层失效后防水工程。
Waterproof construction is a concealed project, and subsequent construction may also damage the waterproof layer. If the floor tiles have been laid, do not smash the floor tiles. Use professional joint filling waterproof materials to block all gaps and do a good job of waterproof. It is also applicable to waterproof works after failure of waterproof layer in toilet.