Installation Guide
INSTRUCTIONS
STEP 1
» 
Clean the joist 
surface making 
sure it is dry and 
free of any debris.
STEP 2
» 
Cut the membrane 
to the desired length 
and remove tape 
backing. 
STEP 3
» 
Apply tape to any 
surface that can 
hold water: all joists, 
rim joists, beams 
and ledger board.
TREX JOIST & BEAM TAPE INSTALLATION
PREPARATION
» Trex Protect Joist & Beam Tape 
can be applied to horizontal 
and vertical surfaces.
» Trex Protect Tape has two widths 
making it convenient to apply to 
double beams and joists. Use 
1–5/8” (4.13 cm) Joist Tape for 
joists and 3–1/8” (7.94 cm) 
Beam Tape on all double beams. 
» For best results, the Trex Protect 
Tape should be installed when 
temperatures are 50˚F (10˚C) 
or greater.
»
 If installing in cold weather or 
when joists are wet, staple Trex 
Protect to hold it in place while 
attaching the deck boards. 
The tape will seal when the 
product warms above 40˚F 
(4.5˚C).
» When pulling deck boards onto the 
deck, a piece of plywood or wafer 
board can be used to overhang the 
edge of the deck. This will prevent 
the product from rolling up and 
pulling up from the joist.
JOIST & BEAM TAPE
For more information, visit trexprotect.com or call 1-877-348-1385
© 2019 Trex Company, Inc. All rights reserved. Trex
®
 Protect
™
 is manufactured and/or distributed by Dri-Deck Enterprises, 
LLC. Trex
®
 is a trademark of, and is used by Dri-Deck Enterprises, LLC. under a license with, Trex Company, Inc.
NOTE:
 Trex Protect cannot be used when installing Trex RainEscape.

