TimberTech PRO-Tac Deck Flashing & Joist Tape
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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 - the tape's strong backing won’t tear easily, even when walking on or dragging boards across the joist.

High Quality 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 degrees.


A heavy duty, flexible, all weather flashing and joist tape to extend the life of decking substructures, with a strong superior seal that prevents water penetration and protects joist lumber from rot.

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.

Use PRO-Tac tape to protect the top of joists before deck installation, as flashing for ledger board attachment to homes, or to protect exposed/raw end-grain.


Manufacturer TimberTech
Brand TimberTech
Sub Brand PRO-Tac
Color Black
Material Butyl
Package Quantity 1

Weights and Dimensions

Length (Feet) 65
Thickness (Inches) 28.5 mils (+/- 2 mils)

Info & Guides

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