Installation Guide

Maximum Spacing Center-to-Center on Stair Stringers and Bullnose
Maximum Spacing Center-to-Center on Stair Stringers and Bullnose
Maximum Spacing Center-to-Center on Stair Stringers and Bullnose
Profile
Dimensions
Spacing
US07 Solid Board
5.5 x 0.9 inches
12 inches
US01 Solid with Grooves
5.5 x 0.9 inches
12 inches
US33 Bullnose
5.5 x 0.9 inches
12 inches
36 inches minimum
width with 4
stringers required
11 inch minimum depth
Stair Tread
Stringer
Minimum 13/64
inch gapping
Stair Tread Installation
Review Diagram 12 and the table below with the
maximum spacing from center to center for stair
tread installation.
Stair treads built with NewTechWood must meet
requirements by the major national building
codes. Consult your local municipality for
specific requirements.
A minimum of four (4) stringers are required.
Overhang on a stair tread should not exceed
more than 5/8 inch.
Note: Stair treads should only be installed
using solid profiles. Using any type of hollow
board for stair treads will not be warrantied.
Diagram 12
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