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Deck blog
Straight answers to the deck questions people search for — sizes, costs, board counts, repairs and building tips — with the numbers worked out in our calculators.
- · 9 min read12x12 Deck Material List: Boards, Framing, Screws and ConcreteHow much material do you need to build a 12x12 deck? A full list: deck boards, joists, beam, posts, hardware, screws, concrete bags and stain, with costs.
- · 9 min readThe 3-4-5 Rule for Decks: How to Square a Deck FrameWhat is the 3-4-5 rule for a deck? How to square a deck frame with a 3-4-5 triangle, 6-8-10 and 9-12-15 multiples, and matching diagonals for common deck sizes.
- · 9 min readHow to Calculate Deck Boards for a Diagonal (45°) DeckHow to calculate deck boards on an angle: count a straight layout, add a diagonal waste allowance, and frame joists at 12" on center. With a worked example.
- · 8 min readHow Many Deck Boards per Square Metre? (Metric Guide)How many deck boards per square metre? Linear metres per m² for 120–150 mm boards, counts for 2.4, 3.6 and 4.8 m lengths, and a worked UK deck example.
- · 9 min readHow Many Posts Does a 10x12 Deck Need?How many posts do you need for a 10x12 deck? Usually 3 for an attached deck and 6 freestanding. See beam spans, post spacing, footings and 4×4 vs 6×6.
- · 8 min readHow Many Square Feet Does a 12 ft Deck Board Cover?How many square feet is a 12 ft deck board? 5.5 sq ft of face, about 5.6–5.7 sq ft with the gap. Coverage for 8–20 ft boards, and why area math runs short.
- · 9 min readWhat Is a Deck Board? Types, Sizes and How They're InstalledWhat is a deck board? A beginner's guide to decking materials, nominal vs actual sizes, lengths, gaps, fasteners and joist spacing, with a worked example.