Question 1

How does the Treated Softwood Timber Decking & Joist Calculator calculate UK quantities and costs?

Accepted Answer

Our Treated Softwood Timber Decking & Joist Calculator uses standard UK trade formulas, British Standard compaction/wastage factors, and October 2026 UK retail/trade pricing for 120x28mm Tanatone Treated Decking Boards to estimate exact quantities and total project budgets in £ GBP.

Question 2

Where is the cheapest place to order or compare 120x28mm Tanatone Treated Decking Boards in the UK?

Accepted Answer

Most UK homeowners and trades compare trade delivery rates from Travis Perkins / Jewson Timber alongside Screwfix and Toolstation accessory bundles.

Question 3

Should I add extra wastage when ordering materials in the UK?

Accepted Answer

Yes. UK building standards recommend adding 5%–10% wastage for straight paving, aggregates, and plasterboard, or 12%–15% for diagonal/herringbone cuts and patterned wallpaper.

Treated Softwood Timber Decking & Joist Calculator

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