TimberTech® PRO-Tac™ Flashing and Joist Tape

A heavy-duty, flexible, all-weather flashing and joist tape that helps extend the life of decking substructures by preventing water penetration and protecting joist lumber from rot.

Available widths: 1.625”, 2.5”, 3.25”, 4”, and 12”

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.

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.

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