Job takeoff
Bathroom remodel takeoff
Floor tiling, backer board, adhesive and the extract fan's airflow for a full bathroom strip-out and refit, with the bath or tray, the tanking, the wall tiling, the sanitaryware and the services listed as work and never certified.
A takeoff is the trade word for the shopping list a job produces — every material, and how much of each, worked out by its own cited calculator.
- 4Measurements in
- 4Trades out
Give the job once
Every figure on the right follows these, in the units you choose.
Been given a quote for this job?
Paste it into the bathroom remodel quote check: each line is read against these same calculators — what it leaves out, what it adds, and what to ask.
Check the quoteEvery trade, from those dimensions
then change a dimension, and each line shows what moved.
| Trade | Quantity | |
|---|---|---|
Tile Backer Board CalculatorTile backer over the floor the tiles cover: the room less the bath, tray and fitted units.
Why this quantity?
Resting on
The cutting waste: the calculator's working figure, a trade convention. | 5 boards | |
Floor & Wall Tile CalculatorFloor tiles over the same area, at the default tile size and a straight pattern.
Why this quantity?
Resting on
The pattern waste: the calculator's working figure, a trade convention. | 11 tiles | |
Bathroom Extract Fan Rate and Duct Resistance CalculatorExtract airflow for the room's volume.How this figure was reached
Resting on
Change any other figure on the Bathroom Extract Fan Rate and Duct Resistance Calculator | 55.47 CFM | |
Thinset & Tile Adhesive CalculatorAdhesive for the tiled floor at the default notch.
Why this quantity?
Resting on
Change any other figure on the Thinset & Tile Adhesive Calculator | 1 bag | |
Tile Backer Board CalculatorTile backer over the floor the tiles cover: the room less the bath, tray and fitted units.
Why this quantity? | 5 boards | |
Floor & Wall Tile CalculatorFloor tiles over the same area, at the default tile size and a straight pattern.
Why this quantity? | 12 tiles | |
Bathroom Extract Fan Rate and Duct Resistance CalculatorExtract airflow for the room's volume.How this figure was reached | 26.67 L/s | |
Thinset & Tile Adhesive CalculatorAdhesive for the tiled floor at the default notch.
Why this quantity? | 1 bag |
Estimates, not a quote. Each row gives its base, the allowance on top, the adjusted figure and what to order; change an allowance on the row, or open its reasoning to see every figure it rests on. A trade's own page carries what it does not cover — open the one you are about to order against.
Labour and programme
Person-hours for the rows going in, from trade rules of thumb: a range for each piece of work, never a price.
- Tile Backer Board1.1 h (0.5–2.2)
- Floor & Wall Tile2.2 h (1.3–4.4)
About 3.3 person-hours in the rows that carry them, between 1.8 and 6.5.
Trade by trade
- Tiler1 tilerhalf a day
About half a day, one trade after another at eight hours a day. Left out: drying and curing, deliveries, inspections, trades overlapping.
2 rows carry no hours of their own
- Bathroom Extract Fan Rate and Duct Resistance: Commissioning is not rated here: it is a visit with an airflow meter, one fan at a time, and reaching each grille and terminal sets its time more than any figure.
- Thinset & Tile Adhesive: counted with Floor & Wall Tile
Labour and programme
Person-hours for the rows going in, from trade rules of thumb: a range for each piece of work, never a price.
- Tile Backer Board1.1 h (0.6–2.3)
- Floor & Wall Tile2.3 h (1.3–4.6)
About 3.4 person-hours in the rows that carry them, between 1.9 and 6.8.
Trade by trade
- Tiler1 tilerhalf a day
About half a day, one trade after another at eight hours a day. Left out: drying and curing, deliveries, inspections, trades overlapping.
2 rows carry no hours of their own
- Bathroom Extract Fan Rate and Duct Resistance: Commissioning is not rated here: it is a visit with an airflow meter, one fan at a time, and reaching each grille and terminal sets its time more than any figure.
- Thinset & Tile Adhesive: counted with Floor & Wall Tile
Setups you have saved
The build-up, the dimensions and any allowance you changed — kept on this device, and reusable on any job. Your prices are not copied in: they stay in your price book, so a setup never holds a stale one.
How far does a budget go?
At your own prices, with this build-up unchanged.
About this job
A bathroom is the smallest room in most houses and the most expensive per square metre, because almost every trade comes through it and each one is working in two square metres (about 20 sq ft) with the door shut. That is why the estimate behaves differently from every other room: the area barely moves the number, and the fixture count moves it a great deal. Two identical rooms, one with a shower over the bath and one with a separate enclosure, differ by thousands and by nothing at all in floor area.
The ventilation row is here because it is the one that gets left out and then causes the failure. A bathroom without adequate extract puts every litre of shower steam into the plaster, the paint and the joinery, and the resulting mould is read as a waterproofing failure when it is a ventilation one. The airflow figure follows the room's volume, so it is the one number on this page the dimensions genuinely decide.
There is no cost row, and the reason is a rule rather than an omission. The site's cost calculators ship with every rate set to zero, because a construction rate is local, current and somebody's commercial position, and inventing one would be inventing a price. The bathroom cost calculator is one page away and will give you a budget the moment you put your own rates into it.
How each line reads
- Base
- What the calculator gives for these dimensions, before anything is added.
- Allowance
- Cutting waste, a lap or spare stock — named, with where it comes from, and changeable on the row.
- Adjusted
- The base with its allowance on top.
- Order
- What to buy: the adjusted figure in whole boards, bags, rolls or lengths.
The order this happens in
Quantities do not tell you the sequence, and on this job the sequence is where the money goes wrong.
- Strip out, and find out what is behind the old tiling before committing to a layout.
- First fix the plumbing and electrics, including the extract duct run to outside — not into a loft.
- Set the bath or the shower tray level and solid, prove its waste, and pressure-test the new pipework while every joint is still in sight, before a board goes on the walls or back on the floor.
- Board the walls and floor in a tile backer rated for wet areas.
- Tank the shower zone and the floor, and let it cure for its stated time.
- Tile, grout, then silicone the movement joints rather than grouting them.
- Second fix the fixtures, run water through each one and check every joint, then the panels go back.
What this takeoff does not cover
- The fixtures themselves, the brassware and the furniture.
- Wall tiling as a quantity. It is listed as work, but a half-tiled bathroom and a fully tiled one differ by a factor of three, so the tiles are measured on the wall tiling takeoff.
- Waterproofing quantities. The tanked area is set by where water lands, not by the room's footprint — see the wet-room and shower takeoffs.
- Moving soil pipes or drainage, which is what turns a refit into a rebuild.
- Underfloor heating, a new circuit such as an electric shower's, and lighting design.
Quote check
Been given a quote for this job?
Paste it into the bathroom remodel quote check. Every line of it is read against these same calculators and your measurements. Quantities only, never prices.
What it leaves out
Every line this takeoff has that nothing on the quote reads as.
What it adds
Labour, removal, hire, fees — each named for what it is.
What to ask
One list of questions, ready to copy. Never a verdict.
More takeoffs
Other job takeoffs
Kitchen refit
16 tradesStrip out a kitchen and fit a new one: base and wall units by standard width, the worktop (countertop) in stock lengths or as a template area, plinth (toe kick) and cornice, a tiled splashback, the new floor and the decoration, with the plumbing, electrical and gas work listed and never certified.
Run this takeoffShower enclosure
4 tradesTanking, backer board, tile and adhesive for the walls and tray area of a shower.
Run this takeoffKitchen splashback
3 tradesWorktop area, tile and adhesive for the run between a counter and the wall units.
Run this takeoff
Frequently asked questions
- What does the bathroom remodel takeoff give for a typical job?
- Opened at Room length 2.5 m · Room width 2 m · Ceiling height 2.4 m · Bath, tray and fitted-unit footprint 1.2 m², it orders: Tile Backer Board, 5 boards; Floor & Wall Tile, 12 tiles; Bathroom Extract Fan Rate and Duct Resistance, 26.7 L/s; Thinset & Tile Adhesive, 1 bag. Opened at Room length 8 ft · Room width 6.5 ft · Ceiling height 8 ft · Bath, tray and fitted-unit footprint 12.9 sq ft: Tile Backer Board, 5 boards; Floor & Wall Tile, 11 tiles; Bathroom Extract Fan Rate and Duct Resistance, 55.5 CFM; Thinset & Tile Adhesive, 1 bag. Every figure follows the dimensions you give it.
- Which calculators does the bathroom remodel takeoff run?
- 4 calculators, one to a line: Tile Backer Board Calculator, Floor & Wall Tile Calculator, Bathroom Extract Fan Rate and Duct Resistance Calculator, Thinset & Tile Adhesive Calculator. Each has a page of its own with its formula and its sources; the takeoff runs them all on one set of dimensions.
- What does the bathroom remodel takeoff leave out?
- 5 things, each named on this page: The fixtures themselves, the brassware and the furniture; Wall tiling as a quantity; Waterproofing quantities; Moving soil pipes or drainage, which is what turns a refit into a rebuild; Underfloor heating, a new circuit such as an electric shower's, and lighting design.
- Can I check a quote for this job against the takeoff?
- Yes. The bathroom remodel quote check reads a quote's lines against these same calculators and your measurements, and reports what it leaves out, what it adds and what to ask. It reads quantities, never prices.