Installation Guide

ManualsBrandsTrex ManualsBalusters & Spindles30-1/4 in. White Composite Baluster Kit (16-Pack)

HOW TO INSTALL DECKING

Stringer

1” x 8" Riser

11" min. depth

1/4" - 3/8" gapping

Fasten treads to

all stringers

3/4" max. overhang

See chart below

Riser removed for clarity

36" minimum width – 4 stringers are required

Above 36" width – 5 stringers are required

SPANNING REQUIREMENTS FOR TREX STAIRS

Note: English measurements are shown, convert to metric measurements if necessary.

STAIRS

Stairway Detail

» Stair treads built with Trex meet requirements by

the major national building codes. Consult your local

municipality for speciﬁc requirements.

» Fasten stair treads continuously across at least four

stringers.

» See chart (at right) for center-to-center spacing of

proﬁles.

» Dress the sides of the stringers and risers with trim or

Trex fascia for a ﬁnished look.

» When installing risers, use two screws per every

stringer.

» Fascia fasteners can only be used if fascia boards

are being used for risers. If deck boards are used,

recommended composite deck screws must be used

(glue is not required for this application).

» Most model building codes require the stair treads to

be constructed under the following requirements:

› Stairways must be at least 36" wide*

› Stair treads must be at least 11" deep

» Gapping between Trex boards on stair treads must be

1/4"–3/8".

» The overhang of the stair tread is not to exceed 3/4".

* For railings that are installed directly over stair treads, the stair

treads may need to be larger than 36" wide. Refer to local building

code regulations for details prior to installing stairs and railings.

NOTES:

» Trex rails meet all major building codes for use as a

guardrail system. Local municipalities may require a

graspable handrail on stairways. Check with your local

building code ocial for local requirements. See Trex

ADA Handrail System in the Trex full catalog.

» Trex Porch Boards should not be used for stair applica-

tions. Use square-edge composite decking boards and

manually rout these where needed to allow for use with

hidden fasteners.

MAXIMUM SPACING ON CENTER OF STAIR

STRINGER

Transcend & Enhance 1" x 6"

Actual dimensions - .94" x 5.5"

12"

Select and Escapes 1" x 6"

Actual dimensions - .82" x 5.5"

Transcend & Select 2" x 6"

Actual dimensions - 1.3" x 5.5"

12"