Job takeoff

Shower enclosure takeoff

Tanking, backer board, tile and adhesive for the walls and tray area of a shower.

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.

  • 8Measurements 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 shower enclosure quote check: each line is read against these same calculators — what it leaves out, what it adds, and what to ask.

Check the quote

Every trade, from those dimensions

4 of 4 trades chosenNot pricedNot in project

then change a dimension, and each line shows what moved.

TradeQuantity
Wet Room Tanking and Waterproof Membrane CalculatorMembrane in two coats over the tanked walls and the tray area, with tape along the foot of the tanked walls and up each internal corner plus 10% for laps, and a preformed collar at each pipe through the wall membrane. Add the tray maker's margin to the tray size if its detail asks for one.
Base
3.4 gal
Allowance
+0 gal · none added
Adjusted
3.4 gal
Order
3.4 gal (no pack size recorded)
Why this quantity?
  1. Base quantity3.4 galcalculatorWet Room Tanking and Waterproof Membrane Calculator v1.1.0, headline
  2. Allowance0 galworked outnone: the calculator adds no allowance, and none was added
  3. Adjusted quantity3.4 galworked outthe base plus the allowance
  4. Order quantity3.4 galworked out3.4 gal (no pack size recorded)

Resting on

  • Tanked wall run9 ftgivenyour tanked wall run
  • Tanked height6.5 ftgivenyour tanked height
  • Tray width3 ftgivenyour tray width
  • Tray depth3 ftgivenyour tray depth
  • Membrane coverage, per coat40 ft²/galassumedthe Wet Room Tanking and Waterproof Membrane Calculator's default
  • Internal corners in the tanked zone2givenyour internal corners in the tanked zone
  • Pipe penetrations through the membrane3givenyour pipe penetrations through the membrane

Change any other figure on the Wet Room Tanking and Waterproof Membrane Calculator

3.4 gal
Tile Backer Board CalculatorWet-area backer on the walls.
Base
6 boards
Cutting waste
+1 board · 15%, trade convention
Adjusted
7 boards
Order
7 boards, already whole
Why this quantity?
  1. Base quantity6 boardscalculatorTile Backer Board Calculator v1.0.1, headline with the cutting waste at 0%
  2. Cutting waste1 boardworked outthe adjusted figure less the base, at 15% (the calculator's working figure, a trade convention)
  3. Adjusted quantity7 boardscalculatorTile Backer Board Calculator v1.0.1, headline with the cutting waste at 15%
  4. Order quantity7 boardsworked out7 boards, already whole

Resting on

  • Tiled wall run9 ftgivenyour tiled wall run
  • Tiled height6.5 ftgivenyour tiled height
  • Board size: 1200 × 800 mm (10.3 sq ft)assumedthe Tile Backer Board Calculator's default
  • Cutting waste (%)15%assumedthe Tile Backer Board Calculator's default

The cutting waste: the calculator's working figure, a trade convention.

Change any other figure on the Tile Backer Board Calculator

7 boards
Tile & Grout CalculatorWall tiles at the default size.
Base
59 tiles
Waste factor
+6 tiles · 10%, trade convention
Adjusted
65 tiles
Order
65 tiles, already whole
Why this quantity?
  1. Base quantity59 tilescalculatorTile & Grout Calculator v1.0.2, headline with the waste factor at 0%
  2. Waste factor6 tilesworked outthe adjusted figure less the base, at 10% (the calculator's working figure, a trade convention)
  3. Adjusted quantity65 tilescalculatorTile & Grout Calculator v1.0.2, headline with the waste factor at 10%
  4. Order quantity65 tilesworked out65 tiles, already whole

Resting on

  • Tiled wall run9 ftgivenyour tiled wall run
  • Tiled height6.5 ftgivenyour tiled height
  • Tile Size (square): 12x12 inassumedthe Tile & Grout Calculator's default
  • Waste Factor (%)10%assumedthe Tile & Grout Calculator's default

The waste factor: the calculator's working figure, a trade convention.

Change any other figure on the Tile & Grout Calculator

65 tiles
Thinset & Tile Adhesive CalculatorAdhesive for the wall tiling, back-buttered: a shower wall is a wet area, where the bed needs 95% coverage.
Base
2 bags
Allowance
+0 bags · none added
Adjusted
2 bags
Order
2 bags, already whole
Why this quantity?
  1. Base quantity2 bagscalculatorThinset & Tile Adhesive Calculator v1.0.1, headline
  2. Allowance0 bagsworked outnone: the calculator adds no allowance, and none was added
  3. Adjusted quantity2 bagsworked outthe base plus the allowance
  4. Order quantity2 bagsworked out2 bags, already whole

Resting on

  • Tiled wall run9 ftgivenyour tiled wall run
  • Tiled height6.5 ftgivenyour tiled height
  • Trowel notch: 3/8 in square — up to 24 in tile (~1.02 lb/sq ft)assumedthe Thinset & Tile Adhesive Calculator's default
  • Back-buttering: Yes — add 30% for a skim on the tile backassumedset by the Shower enclosure takeoff
  • Bag size50 lbassumedthe Thinset & Tile Adhesive Calculator's default

Change any other figure on the Thinset & Tile Adhesive Calculator

2 bags
Wet Room Tanking and Waterproof Membrane CalculatorMembrane in two coats over the tanked walls and the tray area, with tape along the foot of the tanked walls and up each internal corner plus 10% for laps, and a preformed collar at each pipe through the wall membrane. Add the tray maker's margin to the tray size if its detail asks for one.
Base
13 litres
Allowance
+0 litres · none added
Adjusted
13 litres
Order
13 litres (no pack size recorded)
Why this quantity?
13 litres
Tile Backer Board CalculatorWet-area backer on the walls.
Base
6 boards
Cutting waste
+1 board · 15%, trade convention
Adjusted
7 boards
Order
7 boards, already whole
Why this quantity?
7 boards
Tile & Grout CalculatorWall tiles at the default size.
Base
60 tiles
Waste factor
+6 tiles · 10%, trade convention
Adjusted
66 tiles
Order
66 tiles, already whole
Why this quantity?
66 tiles
Thinset & Tile Adhesive CalculatorAdhesive for the wall tiling, back-buttered: a shower wall is a wet area, where the bed needs 95% coverage.
Base
2 bags
Allowance
+0 bags · none added
Adjusted
2 bags
Order
2 bags, already whole
Why this quantity?
2 bags

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.

  • Wet Room Tanking and Waterproof Membrane1.3 h (0.6–2.5)
  • Tile Backer Board1.6 h (0.8–3.3)
  • Tile & Grout6.0 h (3.8–12)

About 8.9 person-hours in all, between 5.2 and 18.

Trade by trade

  1. Waterproofing operative1 waterproofing operativeunder a quarter of a day
  2. Tiler1 tiler1 day

About 1 day, one trade after another at eight hours a day. Left out: drying and curing, deliveries, inspections, trades overlapping.

1 row carries no hours of its own
  • Thinset & Tile Adhesive: counted with Tile & Grout

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.

  • Wet Room Tanking and Waterproof Membrane1.2 h (0.6–2.5)
  • Tile Backer Board1.6 h (0.8–3.2)
  • Tile & Grout5.9 h (3.8–12)

About 8.8 person-hours in all, between 5.2 and 18.

Trade by trade

  1. Waterproofing operative1 waterproofing operativeunder a quarter of a day
  2. Tiler1 tiler1 day

About 1 day, one trade after another at eight hours a day. Left out: drying and curing, deliveries, inspections, trades overlapping.

1 row carries no hours of its own
  • Thinset & Tile Adhesive: counted with Tile & Grout

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 shower enclosure is a small area doing a hard job, and the quantities are small enough that people order by eye and get them wrong in the expensive direction. The tanking is the row that matters: it covers the tray area and every wall water can reach, to the height the membrane's specification asks for, which is a larger area than the tiled one on a wall where the tile stops short, and a smaller one where the tiling runs floor to ceiling around a room. That is why the takeoff asks for the tanked run and height separately from the tiled ones.

The distinction between this and a wet room is worth being precise about, because the two are often quoted as though they were the same job. A shower enclosure has a tray or a former that contains the water and a threshold that keeps it in. A wet room has neither: the whole floor falls to a drain and the whole room is tanked. This takeoff is the first of those — walls and a defined tray area — and the wet-room takeoff is the second.

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.

  1. Set out the tray or former first, and confirm the fall and the waste position before anything is boarded.
  2. Board in a wet-area backer, taped and sealed at every joint and internal angle.
  3. Prime, then tank: two coats with tape in the corners, the upstand and around the waste.
  4. Flood-test if the detail allows it, before a single tile goes on.
  5. Tile from a level batten, keeping the cuts away from the most-seen corner.
  6. Silicone every internal angle and the tray junction — grout there will crack.

What this takeoff does not cover

  • The tray, former, screen, door and waste.
  • The fall in the floor, which a tray sets and a wet room has to be built into.
  • Grout as an order. The tile row's breakdown gives a rough bag count, the tiled area at about 7 m² (75 sq ft) a bag, which does not look at the tile size or the joint width; the real quantity depends on both, so check it against the grout maker's coverage chart for your tile and joint.
  • Any pipework, valve or thermostatic mixer behind the wall.
  • Primer, which absorbent substrates need and cement backer board often does not; apply the maker's rate to the tanked area in the tanking row's breakdown.

Quote check

Been given a quote for this job?

Paste it into the shower enclosure 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.

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    Run this takeoff
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Frequently asked questions

What does the shower enclosure takeoff give for a typical job?
Opened at Tiled wall run 2.7 m · Tiled height 2 m · Tray width 0.9 m · Tray depth 0.9 m · Tanked wall run 2.7 m · Tanked height 2 m · Internal corners in the tanked zone 2 · Pipe penetrations through the membrane 3, it orders: Wet Room Tanking and Waterproof Membrane, 13 litres; Tile Backer Board, 7 boards; Tile & Grout, 66 tiles; Thinset & Tile Adhesive, 2 bags. Opened at Tiled wall run 9 ft · Tiled height 6.5 ft · Tray width 3 ft · Tray depth 3 ft · Tanked wall run 9 ft · Tanked height 6.5 ft · Internal corners in the tanked zone 2 · Pipe penetrations through the membrane 3: Wet Room Tanking and Waterproof Membrane, 3.4 gal; Tile Backer Board, 7 boards; Tile & Grout, 65 tiles; Thinset & Tile Adhesive, 2 bags. Every figure follows the dimensions you give it.
Which calculators does the shower enclosure takeoff run?
4 calculators, one to a line: Wet Room Tanking and Waterproof Membrane Calculator, Tile Backer Board Calculator, Tile & Grout 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 shower enclosure takeoff leave out?
5 things, each named on this page: The tray, former, screen, door and waste; The fall in the floor, which a tray sets and a wet room has to be built into; Grout as an order; Any pipework, valve or thermostatic mixer behind the wall; Primer, which absorbent substrates need and cement backer board often does not; apply the maker's rate to the tanked area in the tanking row's breakdown.
Can I check a quote for this job against the takeoff?
Yes. The shower enclosure 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.