Installation Guide
152
SELECT RAILING
NOTE: Construction methods are always improving. Please refer to www.trex.com for the most up-to-date installation requirements.
HOW TO INSTALL TREX SELECT STAIR RAILING/CONTINUED 
TREX SELECT
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 
90°) 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 Foot Block 
9.   Secure post caps 
with silicone or PVC 
adhesive. Attach foot 
block per foot block 
instructions.
NOTE: Clean up any 
excess adhesive before it 
dries. 
6a
6b
6c
8a
7
8b
8c
2
9
1










