Thickness Of Stair Risers

Thickness in natural unfinished red oak.

Thickness of stair risers.

Maximum 7 3 4 inch stair riser height. Most stair companies use 1 1 16 industry standard tread thickness. Minimum 10 inch stair tread depth with nosing or minimum 11 inches with no nosing. In a given run of stairs the greatest step height and the smallest step height should not vary more than 3 8 inch 9 5 mm.

Building codes limit variation to 3 8 10 mm the underside of risers should be sloped or have a 60 angle minimum between nosings and the horizontal surface open risers are not allowed under ada guidelines. Handrail height to be placed a minimum 34 inches to 38 inches. A stair riser is the back vertical part of a step. Maximum 12 3 vertical height rise for a flight of stairs.

Unfinished the surewood lnl 48 in. This is not the case for open riser staircases. Designed for interior use our tread can be stained to match other stair parts or surrounding decor. Thick stair treads are often used in open rise staircases where there is only one supporting stringer.

Open risers with openings more then 30 inches 762 mm vertical to the floor should not permit the passage of a 4 inch diameter 102 mm sphere. This should be no more than 7 3 4 inches. It s also important to note that if you do build a closed riser staircase your stair treads will need to have a note as well. The surewood lnl 48 in.

Riser and tread dimensions should be continuously uniform for safety. Handrail graspability to be either type i or ii with a minimum 1 1 2 inch clearance from a wall. This type of staircase requires a stair tread thicker than the standard 1. In fact many professionals recommend risers with a thickness of.

Unfinished oak stair treads have a 1 in. 7 3 4 inches maximum. I never lost a cent on the jobs i didn t get. Item 17656 model 7d48 oak.

If you need a size or species you don t see listed here please contact us for a quote. Staircase riser height translates to the distance you move your foot either up or down from one step to an adjacent step. Step riser specifications riser height 7 75 or in some codes 7 0 or in canada 8 25 maximum and 4 inches 102 mm minimum. The following user says thank you to greg24k for this useful post.

We can make these thicker stair treads in most species and colors. According to general specifications your stair riser thickness should be no less than.