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Ensuring Decking Board Bearing

2:15
2:58
29.2M views

At 2:15 in

Learn why decks fail and how to install a deck 💪 #decks #learn #carpentry #flashing

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What happens here

The presenter demonstrates the importance of proper bearing for decking boards. When grooved-edge decking meets a square-edge board (or another grooved board that isn't interlocking), it must sit directly on a joist for support. If a board's edge does not sit on a joist, it will flex or even fall through when stepped on, creating a hazardous situation.

Goal: Ensure all decking boards are properly supported by joists.

Tools and materials

  • Grooved-Edge Decking Board — Demonstrating decking support
  • Joist — The supporting member for decking
  • Square-Edge Decking Board — Demonstrating decking support

What they say

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installed with lags and full blocking, makes this post super strong. Measure from finished deck height down to your ground height. Install backing and then you can install your stairs. When your grooved edge meets up with the square edge, it has bearing. This board doesn't sit on a joist. When you step on these boards, they'll flex, fall through. Install your joist tape. Joist tape keeps your joist dry. Here's a fastener with joist tape. Here's a fastener without. After a 24-hour soak, neither fastener leaked through. If we dumped this, water soaked

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