We replace grout and silicone, when grout is damage or missing the only option is to replace it to maintain your shower appearances and stop liking in.
If the silicone start to show black spot or look derty, it need to be replace. As it cannot be clean and it became permeable, allowing water liking in And cause futher damage.
We only use top quality grout and silicone to ensure peace of mind for many years.
Grout and silicone come in many different colors to match any type and colors of tile