Installation Guide

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

HOW TO INSTALL DECKING

LOCATION AND INSTALLATION OF SURFACE MOUNT POST – DECKING/

CONTINUED

Line Post Installation

3. Install two 2" x 8" (5.1 cm x 20.3 cm) cross-bracing

frames in between joists at 7-1/4" (18.4 cm). Attach

a total of twelve 3" (7.6 cm) pressure-treated

compatible screws (not provided).

4. Install two 2" x 8" (5.1 cm x 20.3 cm) boards as

blocking under post location. Securely attach

blocking using a total of twenty-four 3" (7.6 cm)

pressure-treated compatible screws (not provided).

5. Using post a template, mark locations of holes.

6. Drill through decking and blocking boards using

5/8" diameter bit (long drill bit will be required).

7. Insert the (2) stainless

steel barrier strips

under the mounting

bolt holes. BARRIER

STRIPS ARE REQUIRED

ONLY IF ATTACHING

POST DIRECTLY TO

PRESSURE-TREATED

FRAMING.

8. Attach posts using

four 3/8" x 6" (1 cm

x 15.2 cm) hex cap

bolts, washers, and

nuts, along with

aluminum back plate on

underside of blocking.

If the project requires

IRC compliance, this

back plate MUST be

installed under the

decking to ensure

this will meet code

compliance. Reference

SKU part number

ALPOSTHWDECK for

required hardware and aluminum plate. (Consult

local code ofﬁcial for more information on IRC

Compliance.)

NOTES:

» Use composite shims or similar material (not

provided) if posts are not plumb. Ensure that post

is placed on decking surface so that it clears the rim

joist and there is enough clearance on the underside

blocking for the back plate to be installed.

» Rim joist removed to show proper attachment of

hardware.

Install Guide Blocks

NOTE: Pre-drilling is not required but is optional for at-

tachment of guide blocks to post. Use a drill bit slightly

smaller in size than that of

screw being installed.

9. Place or rest bottom

aluminum guide block

on bottom of post. Place

guide on post so that

notch is on a side that

does not require railing

to be attached.

Blocking

boards

7-1/4"

(18.4 cm)

7-1/4"

(18.4 cm)

Cross-bracing

frame

Cross-bracing

frame

notch

barrierbarrier