TimberTech® PRO-Tac™ Flashing and Joist Tape
Superior Sealing
Keeps water out by providing a superior seal around screws at the fastening site. Won’t bunch, bind, or tear during screw driving.
Heavy-Duty Use
This tape’s strong backing won’t tear easily, even when walking on or dragging boards across the joist.
High-Quality
The butyl adhesive provides an advanced, secure bond to joists that won’t peel off.
All-Weather
Use in all weather conditions; rated for use in temperatures from -70°F to 200°F.
Available Widths (Black)
1.625” for single joists (16 rolls x 65’ length)
2.5” for single joists (10 rolls x 65’ length)
3.25” for double beams (8 rolls x 65’ length)
4” for general flashing (6 rolls x 65’ length)
12” for general flashing (4 rolls x 25’ length)
Also available in 36-case pallets, with the exception of 12” tape
Tape Construction
• Adhesive: Butyl Rubber (20 mils)
• Liner: PET (2 mils)
• Backing: TPO (6.5 mils)
• Total Thickness: 28.5 mils (+/- 2 mils)
Instructions
Select a tape width that allows for overhang on each side and apply to the top of a joist or beam using firm pressure (preferably with a hand roller) to ensure adequate adhesion. It’s best to apply this tape to clean, dry lumber.
Questions about usage?
Download the Sell Sheet_PRO-Tac.
Questions About Installation?
We’re here to assist you with videos, guides, and more. View installation help.
The Best Warranty Coverage
TimberTech products are engineered the right way, to last. And many are covered by leading warranties. See full warranty details.
What temperatures are rated for use?
PRO-Tac is rated for application temperatures from 20°F to 170°F and service temperatures from -70°F to 200°F. It’s best to apply this tape to clean, dry lumber.
What material is PRO-Tac tape?
PRO-Tac is a self-adhesive Butyl Tape with PET Liner.
What about double joists?
PRO-Tac is offered in five widths to accommodate a variety of applications. Use 1.625” or 2.5” tape for single joists, 3.25” tape for double beams, and for general flashing, use 4” or 12” wide tape.