Craft Quantities
Plan & Takeoffs

Quote check

Check an attic insulation quote

Paste the quote you were given and enter your measurements. Every line is read against the job: what the quote leaves out, what it adds, which quantities sit outside the computed range, and what to ask. Quantities only — never prices.
  • 3Lines the job needs
  • 5Measurements
  • QuestionsNever a verdict

How the quote is read

Each line of an attic insulation quote is matched to the line of the job it names, or marked as something the Attic insulation upgrade takeoff does not measure — labour, removal, hire, fees, or anything else.

The job’s own figures come from 5 measurements — attic length, attic width, added depth, current R-value, target R-value — run through the same calculators as the takeoff, so the two give the same figure for the same job.

Reading an attic insulation quote

Attic insulation is quoted by area and by the depth or R-value reached rather than by the bag, so the depth on the quote is the figure to hold against the one here.

Loose fill settles, and installers blow a little over the target to allow for it. Whether the price includes sealing the ceiling's gaps first matters most: insulation laid over open penetrations performs well below its label.

Three steps

  1. Give your measurements. The page opens on a typical job so it has something to show.
  2. Paste the quote's lines as they came, or add them one at a time. Leave the prices in — they are taken out, never read.
  3. Read the report: what is left out, what is added, what sits outside the range, and one list of questions to send.

Your quote

The attic insulation quote you were given

Paste from an email, or open or drop a PDF, Excel, CSV or text file, or a photo of the quote. Amounts of money are taken out before anything is read — this page compares quantities, never prices.

Nothing you paste or open leaves this device.

or one the job needs:

The reading

What the quote says, against the job

Attic insulation · Attic length 33 ft · Attic width 26 ft · Added depth 12 in · Current R-value 19 · Target R-value 49Attic length 10 m · Attic width 8 m · Added depth 0.3 m · Current R-value 19 · Target R-value 49

  • What it leaves out

    Every line the job needs that nothing on the quote reads as, with the quantity your measurements produce.

  • What it adds

    Lines this job's takeoff does not measure — labour, removal, hire, fees, anything else — each named for what it is.

  • What sits outside the range

    Quantities above or below the computed range, by how much, in the quote's unit or converted and shown.

  • What to ask

    One list of questions, in the quote's order, ready to copy and send. Questions, never a verdict.

Paste the quote above, or add its lines one at a time. The reading appears here as each line is read.

Outside what this takeoff measures

4

Nothing in the reading measures these. Whether the quote covers each is worth asking in its own right: a scope missing from a quote tends to become a cost after work has started. Why each is left out is on the takeoff.

  • Air sealing, which matters more than depth and is not a quantity of insulation
  • Ventilation baffles, loft boarding and the raised walkway a topped-up attic needs
  • Anything that cannot be covered
  • The hatch, which is usually the worst-insulated square metre in the house and is not part of this area

The reference

Every line the reading looks for

For Attic length 33 ft · Attic width 26 ft · Added depth 12 in · Current R-value 19 · Target R-value 49Attic length 10 m · Attic width 8 m · Added depth 0.3 m · Current R-value 19 · Target R-value 49. Each is the calculator linked under it, run with those measurements; a range is that calculator at both ends of one choice, not a margin for error.

How the ranges are taken

Where the choice is cutting waste, the ends are the site’s own allowances: 5%, the tight buffer of a crew with a planned set-out, and 15%, the wider one a first-timer orders. Where the calculator decides between patterns or materials, the ends are the options it offers. Where it adds nothing for loss, the range runs from the net quantity to 15% over it.

A minimum — the fewest hangers a spacing allows, the least airflow a room needs — has no upper end. A single figure carries an allowance the material itself needs, such as a lap, and names it.

What a reading like this cannot see

  • It does not know your prices, your market, or what the work ought to cost.
  • It does not know the building — the access, the condition of what is there, or what has to happen first.
  • It cannot check a lump sum, because there is no quantity in one.
  • A line it reads as missing may be priced under another name. A quantity outside the range is not evidence of anything. Each is a reason to ask a question.
  • Two quotes are not comparable until their scopes are.
  • It is not advice, and it is no substitute for a second quote.

The full takeoff

Every quantity for this job, with its working

The Attic insulation upgrade takeoff runs the same calculators on the same measurements and shows what sits under each line here.

Open the takeoffEvery quote check

  • Base, allowance, order

    Each line's quantity before and after its allowance, and what to buy.

  • Every allowance editable

    Change a waste figure and the order follows, with its source named.

  • Into a project

    Add the whole job to a workspace with your own prices.

Frequently asked questions

What quantities does an attic insulation job need?
It depends on the measurements, so this page asks for yours. At the size it opens on — Attic length 10 m · Attic width 8 m · Added depth 0.3 m · Current R-value 19 · Target R-value 49 — the lines come to: Attic Insulation Upgrade, 305 mm of additional insulation; Blown-In Insulation Bag Count, 10–12 bags; Insulation Batt, 10 packages. In imperial units — Attic length 33 ft · Attic width 26 ft · Added depth 12 in · Current R-value 19 · Target R-value 49 — they come to: Attic Insulation Upgrade, 12 in of additional insulation; Blown-In Insulation Bag Count, 10–12 bags; Insulation Batt, 10 packages.
Which line on an attic insulation quote varies the most?
The Blown-In Insulation Bag Count: 10–12 bags for a job measured Attic length 10 m · Attic width 8 m · Added depth 0.3 m · Current R-value 19 · Target R-value 49, depending on how much is allowed for loss over the net figure, up to 15%.
What does an attic insulation quote often leave out?
The reading names every line of the job that nothing on the quote reads as — any of the 3 lines the takeoff measures. The takeoff also lists 4 things it does not measure, shown under the reading, and each is worth asking about: a scope missing from a quote tends to become a cost after work has started.
Can I paste the quote exactly as it came?
Yes — from an email, a PDF or a spreadsheet, one item to a line. Amounts of money are taken out before anything is read, headings and totals are skipped, and each line is shown with what it was read as, so a misreading is one correction. Quantities in the other unit system are converted and the conversion is shown; a count of boxes is never compared with a count of tiles.
Does this check the price as well?
No. It reads quantities, never prices, and this site publishes none: an installed price moves with the market, the season, the access and the specification, so a figure for what the work ought to cost would give you confidence in a number nobody can defend. A quantity against your own measurements is checkable, and every figure here links to the calculator that produced it.