Installation Guide
134
TREX
®
 SIGNATURE™ RAILING
NOTE: Construction methods are always improving. Please refer to www.trex.com for the most up-to-date installation requirements.
Over 6’ Rail Spans
9b.   Measure the distance between the vertical end holes 
on both top and bottom rails. Divide the distance 
into thirds and make two marks on top and bottom 
rails.
NOTE:
 Maximum unsupported rod span is 32.25".
Locating and Drilling Midspan Holes
10.  Using the slot on the HZ template, locate marked line 
and drill two 7/64" pilot holes (or mark with a punch).
NOTE: 
Pilot holes will be drilled out larger in next step.
11.   Using pilot holes 
(or marks), drill 1/4" 
holes for all vertical 
supports in both top 
and bottom rails.
NOTE: 
Clean any burrs 
from edges of holes to 
ensure good fit on both 
sides.
Cutting Rods to Length (When Required)
12.   Measure the distance between the end (outer) holes 
(X") on top or bottom rail and add 3/8" to this 
measurement.
NOTE:
 If installed at exact spans, rods do not have  
to be cut.
13.   Cut rods to the length measured in previous step.
Vertical and Rod Assembly 
14.   Insert anti-rattle 
strips into the 
vertical supports. 
NOTE: 
There are two 
anti-rattle strips for 
each support which can 
only be inserted in one 
side.
15.   Attach one end vertical and all intermediate 
verticals to bottom rail using HZ spacer and  
screws provided.
9b
10
2
1
11
X" + 3/8"
X" + 3/8"
12
X" + 3/8"
13
HOW TO INSTALL HORIZONTAL ROD RAILING/CONTINUED 
TREX
®
 SIGNATURE™
STANDARD
14
15
1
1
2










