Renew / repair timber floor (joists and boards): calculator for UK builders
Answer the measurements this calculation needs and JobBosh works out the materials with wastage and pack rounding, the labour hours by role, the plant, the waste and the site needs - then prices them from your own figures, a supplier's quotation or a dated price you record. Free, no account needed to start.
What it works out
- Material: 22 mm T&G flooring-grade chipboard (2400 x 600)
- Labour: Take up existing floor and clear; Lay new flooring
- Waste: Old flooring / joists (timber waste)
The questions it asks
| Question | Unit / choices | Required? | Help |
|---|---|---|---|
| Floor area | m2 | required | |
| Scope | one of: boards only, boards and some joists, full renewal | optional - default boards_only (labelled assumed) | |
| Decking | one of: t and g chipboard 22, softwood boards, plywood 18 | optional - default t_and_g_chipboard_22 (labelled assumed) |
The norms behind it, with their sources
Coverage, productivity and wastage defaults you can edit; each carries where it comes from and is shown as assumed until your own benchmark replaces it.
| Norm | Value | Source | Tier |
|---|---|---|---|
| Lay flooring per m2 | 0.4 hr/m2 | trade practice | assumed |
| Renew joists per m2 incl. hangers | 0.8 hr/m2 | trade practice | assumed |
| Take up existing floor per m2 | 0.25 hr/m2 | trade practice | assumed |
| Joist length per m2 at 400 mm centres | 2.5 m/m2 | trade practice | assumed |
A worked example
Answers used: Floor area 20 m2; Scope boards only; Decking t and g chipboard 22. These are the recipe's own quantities for those answers - the prices are yours, the supplier's or a quotation's, never a figure typed on a web page.
| Kind | Line | Quantity | How it is worked out |
|---|---|---|---|
| material | 22 mm T&G flooring-grade chipboard (2400 x 600) | 22 m2 16 x sheet - 1.44 m2 per sheet | 20 m2 +10 % |
| labour | Take up existing floor and clear | 5 hr | 20 m2 x 0.25 h/m2 |
| labour | Lay new flooring | 8 hr | 20 m2 x 0.4 h/m2 |
| waste | Old flooring / joists (timber waste) | 0.8 m3 | 20 m2 x 0.04 m3/m2 |
Labour on this example: about 13 hours across the roles; at your rates it becomes money.
Site questions this work raises: Protection and cleanliness, Waste, Site access and neighbours.
Specialists or hire it may need, drafted as enquiries from the job's facts: Waste removal (man and van / clearance).
Check sub-floor ventilation and DPC while the floor is up.
Then what
Price the lines from your crew rates and your material prices (each with its source and date), answer the site questions (parking, skip, welfare, power, water, protection), let JobBosh draft the supplier enquiries you approve, and issue a branded quotation your customer accepts on a secure link. Guest work is kept for 14 days; a free account keeps it for good.
Start a renew / repair timber floor (joists and boards) job now