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Page 11

INSTALLING STAIR RAILING WITH GLASS INFILL 

FOR CLASSIC COMPOSITE SERIES AND RESERVE RAIL

3

Consult your local building codes for guard and handrail requirements. 

TRIM RAILS

•  First trim both Top and 

Bottom Support Rails to 

dimensions from Step 2. 

TEST FIT for accuracy.

•  Transfer measurement 

from Bottom and Top 

Support Rails to Bottom 

and Top Rails.

•  Trim all Rails to measured 

lengths at appropriate 

angle.

Universal 

Bottom 

Rail

Top Rail

Top 

Support 

Rail

Bottom 

Support 

Rail

2

MEASURE 

SUPPORT RAILS

Support Rails are rotated 90° for 

stair rail applications.

Top R

ail Length

Universal B

ottom R

ail 

Length

Stair Angle

•  Determine 

measurements and 

angle as shown.

•  Trim both the Top 

Support Rail and the 

Bottom Support Rail to 

those dimensions.

•  Test fit rails to check 

for accuracy.

Correct

Incorrect

1

Optimal 39"

INSTALL POST 

SLEEVES

•  Trim Post Sleeves to 

desired length.

•  Slide Post Sleeves and 

Post Skirt over post (do 

not force). Post sleeve 

will be slightly larger 

than the post.

•  Ensure posts are square 

and plumb. Shim as 

neeed to plumb.

Be sure to cut Post Sleeves such that 

finished rail height is at least 36" high 

for a 36" rail application and 42" high 

for a 42" application.
For all rail installations, post and post 

covers must be plumb and aligned with 

one another.
For Over-the-Post applications, it is 

critical that Posts be of a consistent 

height (e.g. the tops of all post sleeves 

are level and on plane with each other).

IMPORTANT NOTES:

This entire section of 

instructions is for installation 

of Classic Composite Series 

and Reserve Rail systems. 

Installation of the RESERVE 

RAIL system is identical to 

the Classic Composite Series, 

except it uses the RESERVE 

BOTTOM RAIL instead of the 

Universal Bottom Rail. 

Summary of Contents for TimberTech Classic Composite Series

Page 1: ... Railing with Glass Infill 11 TimberTech Reserve Rail can be installed with a continuous Top Rail in up to 16 lengths measured from the center of the end posts These applications require the use of a 4 Post Sleeve 4 Post Skirt and a 4 x4 Post as an intermediate post as well as unique fastening procedures This Install Guide details these unique procedures ...

Page 2: ...h Rail application AZEK Co LLC recommends that all applications be reviewed by a licensed architect engineer or local building official before installation If you have any questions or need further assistance please call AZEK Customer Service at 877 ASK AZEK 877 275 2935 or visit our website at www TimberTech com TimberTech Railing is tested as a whole system and should be used that way It is not ...

Page 3: ... post to center of post For all other applications consult a design professional or a TimberTech Railing representative for more information 4x4 lumber posts must be installed plumb and level with each other Cut slowly using a thin kerf finish saw blade to avoid chipping Read instructions completely to get an understanding of how the product goes together and how each piece affects the other For a...

Page 4: ... Sleeve 5 6 32 6 x 6 Post Sleeve 6 32 4 x 4 Post Sleeve 4 25 4 25 COMPONENTS NEEDED FOR INSTALLING ONE TIMBERTECH RAIL SECTION TOP RAIL NOT INCLUDED IN CLASSIC COMPOSITE SERIES Components available separately for mix and match rail systems Additional Components Needed for Each System Sold Seperately Top Rail Sold Seperately 1 Universal Bottom Rail with Classic Composite Series 2 Support Rails Hard...

Page 5: ...OR CLASSIC COMPOSITE SERIES AND RESERVE RAIL DIMENSIONAL CONSTRAINTS FOR STRAIGHT SECTION DIMENSIONAL CONSTRAINTS FOR STAIR SECTION Max of 63 Min 27 75 for 36 Min of 2 Max of 4 Min 27 75 for 36 Glass should be 1 4 thick Max of 63 Min of 2 Max of 4 ...

Page 6: ... sleeve will be slightly larger than the post Ensure posts are square and plumb Shim as needed to plumb Position template at bottom of post sleeve above post skirt Cut the Bottom Support Rail to length Add support blocks as required Attach brackets CUT AND ASSEMBLE BOTTOM SUPPORT RAIL Be sure to cut Post Sleeves such that finished rail height is at least 36 high for a 36 rail application and 42 hi...

Page 7: ... Universal Bottom Rails Top Support Rail and cut to length Measure and cut Top and Bottom Glass Channels and Rubber Gaskets to appropriate lengths Position Bottom Support Rail assembly onto Support Blocks Pre drill holes into post sleeves only Attach brackets with green coated screws 7 64 Pre drill 8 x 3 Semi threaded Screws 8 x 3 Semi threaded Screws Cut Rubber Gaskets with utility knife 5 Glass ...

Page 8: ...ANEL ASSEMBLE LOWER RAIL SECTION Apply Rubber Gasket to bottom of Glass Panel first Set panel gasket assembly into Bottom Glass Channel Place Universal Bottom Rail over Bottom Support Rail Install Bottom Glass Channel utilizing pre drilled holes Pre drill 7 64 8 x 1 Coated Screws Bottom Glass Channel Pre drilled holes are in channel ...

Page 9: ...ALL TOP GASKET AND TOP GLASS CHANNEL Align top Support Rail to center of Posts Attach Brackets to Top Support Rail Place Rubber Gasket on top of glass panel Fit Top Glass Channel onto glass panel assembly Top Glass Channel Pre drilled holes are on side 7 64 Pre drill 8 x 3 Semi threaded Screws 7 64 Pre drill 8 x 3 4 Screws ...

Page 10: ...terior grade caulk applied to the underside of the Cap Attach Top Rail using 2 1 4 coated screws driving screws up through Top Glass Channel into Top Rail 8 x 2 1 4 Coated Screws 3 16 Pre drill through existing holes in Top Glass Channel and through the Top Support Rail Caution Screws must be 2 1 4 to attach the Top Rail on the Straight Rail sections ...

Page 11: ...ils to check for accuracy Correct Incorrect 1 Optimal 39 INSTALL POST SLEEVES Trim Post Sleeves to desired length Slide Post Sleeves and Post Skirt over post do not force Post sleeve will be slightly larger than the post Ensure posts are square and plumb Shim as neeed to plumb Be sure to cut Post Sleeves such that finished rail height is at least 36 high for a 36 rail application and 42 high for a...

Page 12: ...7 64 8 x 3 Semi threaded Screws Attach Mounting Brackets to Top AND Bottom Support Rails Position Bottom Support Rail on the center of the posts and secure Mounting Brackets to posts Trim Foot Block and wedge under Support Rail Attach Pre drill through Bottom Support Rail ONLY with 3 16 bit Bottom Support Rail 8 x 3 Coated Screw INSTALL BOTTOM SUPPORT RAIL Pre drill 7 64 8 x 3 4 Screws Center scre...

Page 13: ...oles are in channel 7 64 Pre drill 8 x 1 Coated Screws 7 ASSEMBLE LOWER RAIL SECTION Place Universal Bottom Rail over Bottom Support Rail Install Bottom Glass Channel utilizing pre drilled holes ATTACH LOWER GASKET AND INSTALL GLASS PANEL Apply Rubber Gasket to bottom of Glass Panel first Set panel gasket assembly into Bottom Glass Channel 6 ...

Page 14: ...r Gasket on top of glass panel Fit Top Glass Channel onto glass panel assembly Top Glass Channel Pre drilled holes are on side INSTALL TOP SUPPORT RAIL Mark Ends of Top Support Rail Rotate Rail assembly out of way to fasten Support Block Secure Mounting Brackets to Posts Pre drill 7 64 8 x 3 Semi threaded Screws Pre drill 7 64 8 x 3 Semi threaded Screws ...

Page 15: ...POST CAPS Attach Top Rail using 3 coated screws driving screws up through Top Glass Channel into Top Rail Attach Post caps using exterior grade caulk applied to the underside of the cap 8 x 3 Coated Screws 3 16 Pre drill through existing holes in Top Glass Channel Screws must be 3 to attach the Top Rail on stair sections ...

Page 16: ...AZEK Building Products 1330 W Fulton Market Suite 350 Chicago IL 60607 REV 07 20 2020 AZEK Building Products All Rights Reserved TimberTech com ...

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