#stairs

I want to build the below but I have balusters and an open end on the left side How do you finish the left side verticals in such a case ? Bullnose as well ?

I’m working on a refinishing project for my hardwood stairs and needed some guidance on best practices. Already did all of upstairs with a drum sander and now I have the stairs left to go, which I know will be a challenge. I plan on staining a “weathered grey” color and then applying poly...