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Tread Thickness


Does the thickness of the stair tread change the total rise?


The thickness of each stair tread does not affect the total rise whatsoever. When the stair stringer is laid out, the thickness of the stair tread is taken off the bottom of the stair stringer and added on at the top when you install the stringer, so it cancels itself out.

When you put on the stair tread, the rise remains the same, since you add the thickness of the stair tread on the top of the riser and subtract the thickness on the bottom of the same riser. These two also cancel each other out.

When calculating the rise for a stair stringer do not figure in the stair tread thickness. See my article Building Stair Stringers for more information.


(Ask Dave) (About Dave)

Your source for building tips, woodworking & furniture plans, house plans and building advice directly from Dave...

Hi, I'm Dave Osborne. With over 50 years experience as a journeyman carpenter, foreman and contractor in heavy construction I enjoyed working with apprentices and sharing the tricks of the trade that others shared with me. Now I get emails from Members all over the world and we include many of my answers in our Free Monthly Newsletters. Some of my answers include drawings and instructions specific to a project, but may also answer your questions. I use correct construction terminology, so you can confidently inform your building supply dealers or contractors exactly what you need.


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