Calculate required decking board count, framing joists, concrete footings, and structural screws for your patio layout.
🪵 Decking & Framing Estimator
16' Deck Boards
Estimated Joists
Deck Area
💡 Pro Tip
If building a composite deck, ensure your joist spacing is exactly 12 inches on center if installing decking diagonally. Failing to support composite boards properly will cause sagging.
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Frequently Asked Questions
Q: What is the standard joist spacing for a deck?
For residential wood decks, joists are spaced 16 inches apart on center. For composite decking, 12 or 16-inch spacing is required depending on manufacturer specifications.
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