Installation Guide
Page 7
Installing AZEK Rail Stairs with Balusters
Trim Rails
TRIM RAILS
•  Transfer measurement from Bottom Support Rail to Bottom Rail.
•  Trim Top Rail to match Top Support Rail at appropriate angle.
3
Support Rails are rotated 90° for 
stair rail applications. 
• Determine 
 measurements 
 and angle as shown.
• Trim both the Top 
Support Rail and the 
Bottom Support Rail 
to those dimensions.
• Test fi t rails to check 
for accuracy.
• Trim Post Sleeves to 
desired length.
INSTALL POST 
SLEEVES
• Slide Post Sleeve and 
Post Skirt over post 
(do not force).
• Ensure post are 
square and plumb.
1
2
Top Rail Length
Bottom Rail Length
• 
 Trim Top Rail to match Top Support Rail at appropriate angle.
Bottom Rail
Top Rail
Top Support Rail
Bottom Support Rail
Right
Wrong










