Bathroom plumbing: first and second fix (suite supplied separately): 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: Pipe (15/22 mm), waste (32/40 mm), fittings, clips, isolation valves; Flux, solder/push-fit, PTFE, silicone, traps, flexis
- Subcontract: Plumber: first and second fix for 2 fittings, ~20 m new runs - by quotation
- Labour: Builder's work: chasing, boxing in, making good
- Waste: Old fittings, pipe, packaging
The questions it asks
| Question | Unit / choices | Required? | Help |
|---|---|---|---|
| Fittings to connect (basin, WC, bath, shower ...) | nr | required | |
| New pipe runs (hot + cold + waste, total) | m | optional - default 20 (labelled assumed) | |
| Who does the specialist work? | one of: own team, existing specialist, find subcontractor, mixed | optional - default find_subcontractor (labelled assumed) | Own team: priced at your rates. Existing specialist: you enter their figure. Find subcontractor: JobBosh drafts the enquiry from the job facts. Mixed: your team's part at your rates plus the specialist's figure. JobBosh never decides who may do the work. |
| Any unvented cylinder or gas work? | yes / no | optional - default no (labelled assumed) | Unvented hot water (G3) and gas (Gas Safe) need registered engineers by law. |
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 |
|---|---|---|---|
| Connect one appliance (second fix) | 2.5 hr | trade practice | assumed |
| First-fix pipework per metre incl. clips and notching | 0.35 hr/m | trade practice | assumed |
| Copper / plastic pipe per run metre incl. waste | 1.1 m/m | trade practice | assumed |
A worked example
Answers used: Fittings to connect (basin, WC, bath, shower ...) 2 nr; New pipe runs (hot + cold + waste, total) 20 m; Who does the specialist work? find subcontractor; Any unvented cylinder or gas work? no. 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 | Pipe (15/22 mm), waste (32/40 mm), fittings, clips, isolation valves | 24.2 m 9 x length - 3 m lengths (plus fittings per run) | 20 m x 1.1 |
| material | Flux, solder/push-fit, PTFE, silicone, traps, flexis | 2 item | 1 set per appliance x 2 |
| subcontract | Plumber: first and second fix for 2 fittings, ~20 m new runs - by quotation | 1 item | needs a quotation or your figure - never invented |
| labour | Builder's work: chasing, boxing in, making good | 2 hr | 2 x 1 h |
| waste | Old fittings, pipe, packaging | 0.2 m3 | 2 x 0.1 m3 |
Labour on this example: about 2 hours across the roles; at your rates it becomes money.
Site questions this work raises: Utilities and welfare, Protection and cleanliness, Waste.
Specialists or hire it may need, drafted as enquiries from the job's facts: Plumber / heating engineer.
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 bathroom plumbing: first and second fix (suite supplied separately) job now