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Industry Ideas and Tips Cutting Stair Stringers Mon Dec 07 1998 Stair Stringers 1. Measure from Finished floor to finished floor. (height) Riser Height should measure between 7 & 8 inches. Riser Height + Tread Cut should measure between 17-1/4 to 18-1/4 inches. (Minimum to maximum) Note: You always have 1 more riser than tread because you’re top step is a finished floor or deck. Note: Always allow 1-1/4” overhang on steps. Example: Floor to floor height of 47-1/4” 47-1/4” divided by 8 inch (maximum riser height) = approximately 6 treads. Use of 11-1/4” treads – 1-1/4” over hang = 10” tread cut on your riser. 47-1/4” divided by 6 = 7-7/8” riser cut. Check: 10” tread cut + 7-7/8” riser cut = 17-7/8” (which falls within the range of 17-1/4 minimum to 18-1/4” maximum. 2.Cut, assemble and install stair stringers and treads as needed. Lumber, tools and videotape instructions are available for purchase and viewing at our store. Tools Needed: 1. Tape measure or wood rule. 2. Square with adjustable gages. 3. Hand saw and/or power saw. 4. Hammer, nails and pencil. 5. Plumb bob and string 6. Level and Apron