I'm installing baseboard on the outside of a staircase in my home. The staircase doesn't have an open stringer, and the height of my baseboard has created a really interesting angle at the bottom of the stairs where the floor meets the first riser.

Outside Stringer Baseboard

This cut has completely broken my brain. Any insight on how I can find the angles to wrap this around would be really appreciated!

  • (Whoa; it's kind of broken my brain, too.) A diagram showing the distances and angles would really help. Sep 17, 2016 at 19:13

2 Answers 2


From your picture, it looks like if you extend the non-flat sections of the moulding they'll intersect before you reach the vertical at the end of the stair (e.g., pardon my abysmal Photoshopping):

enter image description here

This would certainly be the easiest solution, although it may not be the prettiest one.

  • Looks good to me Daniel!
    – Levi
    Sep 18, 2016 at 0:00

I'd be tempted to put a piece of blocking in to pull this out a bit, to avoid the long awkward angle (just because it would be really hard to get that cut perfectly).

enter image description here

You can use a piece of molding similar to the baseboard (different height maybe) or something more wood-grained to match the stairs.

  • That's it. Show up my Photoshop skills. Sep 18, 2016 at 0:40
  • 1
    BTW, I like the way this will look a lot better than mine, although perhaps using a narrower piece of blocking would be the best solution. Sep 18, 2016 at 0:41

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