Installation Guide
123
RAILING
123
SELECT RAILING
HOW TO INSTALL TREX SELECT STAIR RAILING/CONTINUED
TREX SELECT
NOTE: Construction methods are always improving. Please refer to www.trex.com for the most up-to-date installation requirements.
Attachment of Bottom Rail to Post
6a. Assemble a few of the balusters into the bottom 
and top railings (make sure balusters are setting 
at 90ยบ) and set this on scrap material clearing the 
stair treads to determine where bracket locations 
need to be. Measure to make sure that the bottom 
railing will clear the stair treads and the top railing 
will be aligned with horizontal railing (remember 
in most cases, a longer post and post sleeve will 
be needed on the lower section of stair rail to 
accommodate stair angle).
6b. After locating 
appropriate position for 
bottom rail remove top 
rail and balusters and 
attach bottom rail stair 
bracket to upper post 
using two 
  #8-10 x 3" wood screws 
(provided).
6c. Attach bottom stair 
rail stair bracket to 
lower post using two 
#8-10 x 3" wood screws 
(provided). For best 
results set drill to low 
speed when installing 
these screws.
Install Balusters
7.   Slide balusters into 
bottom rail until 
balusters are fully 
seated.
Attachment of Top 
Rail to Post
8a.  Place top rail onto 
balusters, allowing the 
top rail to rest on the 
surface of the balusters.
8b.  Attach top stair rail bracket to upper post using two 
#8-10 x 3" screws (provided). For best results set 
drill to low speed when installing these screws.
8c. Attach top stair rail bracket to lower post using two 
#8-10 x 3" screws (provided). For best results set 
drill to low speed when installing these screws.
Attaching Post Caps and Installing New Foot 
Block 
9.   Secure post caps 
with silicone or PVC 
adhesive. Attach new
foot block per foot 
block instructions.
NOTE: Clean-up any 
excess adhesive before 
drying.
6a
6b
6c
8a
7
8b
8c
2
9
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