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Should Deck Posts be Notched?

Posted 21 March 2019 10:37 PM by ProWood Staff

ProWood Pre-assembled Handrail with aluminum powder-coated balustersSay “No” to notching pressure-treated deck posts. We want you to build an outdoor railing system that you, your family and guests can enjoy without worrying about safety issues. In order to do so, you need to know this building shortcut is not advisable, and we recommend avoiding it at all costs.

When you notch your railing posts (creating a lip that extends over the deck or porch boards) the outward thrust is significantly reduced. Unfortunately, notching railing posts is a practice we see time and time again.

Here’s why it should NOT be done:

  • Creates a weak point in the post
  • Vulnerable to cracking
  • Moisture creates issues between post and deck over time

    Here’s a great visual representation to reference from Builder Online.

    When you’re building with ProWood® you’re getting the best of the best in pressure-treated lumber. You should NEVER SETTLE for anything less than building code compliance and safety on your outdoor structure. Keep this building tip in mind when you decide to add a pressure-treated railing system to your deck or porch.




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