![Joist tape (double-joist) applied to top of deck understructure](http://www.deckorators.com/cdn/shop/products/JoistTape_RolledUnderstructure_20x20_crop_center.jpg?v=1695332164)
![Joist tape (double-joist) being applied to deck joists](http://www.deckorators.com/cdn/shop/products/JoistTape_LargeRollBeingApplied_20x20_crop_center.jpg?v=1695332164)
![Joist tape (single-joist) applied to top of deck understructure](http://www.deckorators.com/cdn/shop/products/JoistTape_SmallRollCompositeDecking_web3_20x20_crop_center.jpg?v=1695332164)
Joist & Flashing Tape
Maximize the life of your deck substructure with deck joist flashing tape. Whether your deck foundation is made from wood or a composite material, flashing tape helps protect the top and edges of the joists from moisture and water damage.
Available Options
- 1-5/8" x 50' (Single-Joist) in Black
- 3-1/8" x 50' (Double-Joist/Beam) in Black
Product Details
Find Joist & Flashing Tape installation details below or visit our Installation Instructions page for a more comprehensive list of installation instructions.
Find Joist & Flashing Tape answers here, or visit our frequently asked questions page for answers to more general questions.
What would you recommend using for the understructure of a deck?
Can I fasten Deckorators decking over an existing deck, balcony, or porch?
Can I put Deckorators decking over a concrete patio?
How much space is recommended for proper ventilation underneath a deck?
Visit our Warranty page to view our warranty documents.
Visit our Technical Information page to view our technical documents.