My stairs have developed a crack, any ideas on how to fix this? I searched the forum but came up with no results. Would it be better/easier to call a professional? I attempted to repair this last week with some waterproof putty stuff, it lasted for a week and I noticed the crack had gotten bigger yesterday, and again added more putty in a futile attempt to keep the water in.
For now I have drained the water below the crack.
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