Installation Guide
Page 8
Installing AZEK Rail Stairs with Balusters
ASSEMBLE BALUSTERS
• Attach Balusters to Top and Bottom Support Rails and attach Brackets to 
Top Support Rail. 
6
Trim Baluster ends to required 
angle as shown.
Important: Start cut at top 
edge to maximize the length.
Aluminum stair Balusters are 
precut to a stair angle and are 
not to be cut on the job site.
TRIM BALUSTERS
• Place the Bottom Rail 
and the Top Support 
Rail together as 
shown to keep the 
holes aligned. 
• Trim Foot Block to 
stair angle as well.
DRILL BALUSTER 
HOLES
4
5
Tip for Bottom Rail: 
Partially drive screws 
into all Balusters 
before driving them in 
completely.
Brackets must be on the 
side of the rail facing 
the stairs.
Bottom 
Rail
Top 
Support 
Rail
Pre-drill  3/16” 
Scrap piece 
of wood cut 
to stair angle
Bottom Rail
Top Support 
Rail
#8 x 3” Coated 
Screws
#8 x 2” Coated 
Screws
Top Support 
Page 8
Pre-drill 
7/64”
#8 x 3/4” 
Coated 
Screws
Center screw 
aligned with 
rail centerline
Pre-drill 










