I’m not sure what material or style these steps are, but they’ve started crumbling after water got into a crack and froze during the winter. It seems to be getting worse and I’m wondering how to address it. Is this something that can be patched or do I need to remove all this material and start over?
agree with previous comments you can't fix but if you're determined to diy maybe get some outdoor tile and tile over them? must be non stick and you'd need the right mastic but might work (?)