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Reinforcing Deck Rim or Band Joists

It is advisable to increase the rigidity and strength of your deck’s rim or perimeter in order to reduce bounce and provide a solid foundation for your rail system. This can be accomplished in a couple of ways. You may want to install double rim joists across long sections to respond to the flexibility of the material. Also, take advantage of your extra materials by installing blocking around the perimeter. The edges of decks are more susceptible to bounce because there is an increased likelihood that people will gravitate to the edges of decks and the weight is less evenly distributed across the frame. The perimeter is also where rails are attached to the deck frame. Using 12” on center joist spacing will strengthen the frame throughout the deck.

Double Band And Blocking


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Create a free account and get instant & exclusive access to all that Decks.com has to offer:

Checkmark 1,000+ How-To articles
Checkmark 80+ Free Deck Plans
Checkmark Deck Planning Calculators
Checkmark Free & Simple Deck Design Tool
Deck Framing

Reinforcing Deck Rim or Band Joists

It is advisable to increase the rigidity and strength of your deck’s rim or perimeter in order to reduce bounce and provide a solid foundation for your rail system. This can be accomplished in a couple of ways. You may want to install double rim joists across long sections to respond to the flexibility of the material. Also, take advantage of your extra materials by installing blocking around the perimeter. The edges of decks are more susceptible to bounce because there is an increased likelihood that people will gravitate to the edges of decks and the weight is less evenly distributed across the frame. The perimeter is also where rails are attached to the deck frame. Using 12” on center joist spacing will strengthen the frame throughout the deck.


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Learn how to strengthen your deck by adding blocking or bridging material at the mid-span of your joists. Blocking can be used to strengthen guardrails.

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Decking Patterns

Installing your decking at a 45-degree angle is a popular style for decks. This can be done to reduce decking seams or just for appearance.

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Installing your decking at a 45-degree angle is a popular style for decks. This can be done to reduce decking seams or just for appearance.

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Introduction to Decking

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