cause analysis
1: Due to the deep joint of the ceramic tile, no caulking agent was used before construction, which caused some caulking agent to hang in the air and caused grooves after drying. 2. The quality of caulking agent is not enough, and the shrinkage is relatively large, which will also cause deep grooves. 3. Inattention during construction and incomplete filling with caulking agent will also cause deep grooves.
Matters needing attention in construction
After unpacking, the sewing agent flowing out for the first time needs to be discarded, about 3 cm, because under normal circumstances, the sewing agent flowing out for the first time is not evenly mixed, the effect is not good, and it is easy to fade. It is suggested to use an electric glue gun to make the glue outlet more uniform, which is beneficial to the construction and easier to make the construction full.