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Adjust Layout for Riser and Nosing — Step 3: Check the Nosing Overhang

Beginner60 mins

Part of project

measure turning treads · Step 3 of 6

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Recognize that the initial floor marks represent the *face* of the stringer where the riser attaches. However, for a finished staircase, you need to account for the thickness of the riser material and the nosing (overhang) of the tread. Re-adjust your layout by measuring from the initial stringer-face mark. For example, if your riser is 3/4 inch thick and your nosing is 1 inch, you would move your effective plumb line back by 1 and 3/4 inches (3/4" + 1"). This new line will represent the *front edge of the nosing* for each step. Use the level again to verify the stringer against these adjusted marks. This ensures that when the risers and treads are installed, the nosing aligns correctly with the desired tread depth.

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