Knoxville Guide to Deck Joist Tape and Framing

Deck Builders Knoxville · Oct 12, 2026 · 3m

In this episode of Deck Builders Knoxville, we answer a question many homeowners ask before they build or update a deck: what is joist tape and does it really matter? In simple terms, joist tape is a protective strip applied to the top of wood framing members before the deck surface goes on. Its job is to help reduce the amount of moisture that sits on the framing over time. That matters in Knoxville, where we see mild winters, hot humid summers, heavy rain, and plenty of pollen that can all keep outdoor structures damp longer than homeowners expect.

We also talk through where joist tape fits…