Installation & Assembly
Decking Installation Guide / v20191125US 11
Stringer
Minimum 13/64 inch gapping
11 inches minimum
36 inches minimum
width with 4 stringers
required
Stair Tread
Maximum Spacing Center-to-Center on Stair Stringers and Bullnose
Prole 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
DIAGRAM 10
Review Diagram 10 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 specic 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 proles. Using any type of hollow board for
stair treads will not be warrantied.