I'm restoring a 100 year staircase and there is varying widths of openings between the inside of the treads and the vertical risers between them.
The treads will be stained and poly'd, the risers painted.
I think I need a filler that will be flexible, because each step will cause at least a tiny bit of flex or movement.
Does anyone have a recommendation for what to use?
I've been hearing great things about Lexel caulk, for example.
Thank you,
Joseph