Decking Boards, Joists & Noggins Calculator

Std board 2.4m × 144mm with 5mm gap. Recommends the correct joist size and noggin rows for the deck span (TDCA / TRADA aligned).

  • Rows0rows
  • Boards per row0
  • Total boards0boards
  • Joists @400mm centres0joists
  • Recommended joist sizeEnter deck width
  • Noggins (0 rows mid-span)0pieces
  • Noggin linear metres0m
  • Support posts (@1.5m grid)0posts
  • Postcrete (20kg bags)0bags

// Estimate only — verify before quoting

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Frequently asked questions

How do I use the decking boards, joists & noggins calculator?

Enter your measurements and options into the Decking Boards, Joists & Noggins above and the result updates instantly. Std board 2.4m × 144mm with 5mm gap. Recommends the correct joist size and noggin rows for the deck span (TDCA / TRADA aligned).

Is the decking boards, joists & noggins calculator free to use?

Yes — every TradesMate calculator is free to use with no sign-up. Save quotes and use the full estimator with a free trial.

Are the results accurate enough to quote from?

The figures are reliable estimates based on standard UK trade practice. Always allow for wastage and verify against current material prices before quoting a customer.

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