Quote check
Check a structural insulated panel wall quote
- 4Lines the job needs
- 8Measurements
- QuestionsNever a verdict

How the quote is read
Each line of a structural insulated panel wall quote is matched to the line of the job it names, or marked as something the SIP wall (structural insulated panels) takeoff does not measure — labour, removal, hire, fees, or anything else. Work the takeoff lists as part of the job but gives no quantity for is read as that work, not as something the quote adds.
The job’s own figures come from 8 measurements — wall run length, panel height, windows, window rough opening width (each), window rough opening height (each), doors, door rough opening width (each), door rough opening height (each) — run through the same calculators as the takeoff, so the two give the same figure for the same job.
Reading a structural insulated panel wall quote
A SIP wall is often quoted as a panel package from the maker and an erection price from the crew; check both are for the same panel layout, thickness and openings.
Whether the package includes the splines, plates, sealant, tape and panel screws, and whether a crane or telehandler for the lift is in the price, is where quotes differ most.
Three steps
- Give your measurements. The page opens on a typical job so it has something to show.
- 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.
- 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 structural insulated panel wall 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.
The reading
What the quote says, against the job
Structural insulated panel wall · Wall run length 33 ft · Panel height 8 ft · Windows 2 · Window rough opening width (each) 3 ft · Window rough opening height (each) 4 ft · Doors 1 · Door rough opening width (each) 3 ft · Door rough opening height (each) 7 ftWall run length 10 m · Panel height 2.44 m · Windows 2 · Window rough opening width (each) 0.9 m · Window rough opening height (each) 1.2 m · Doors 1 · Door rough opening width (each) 0.95 m · Door rough opening height (each) 2.1 m
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
6Nothing 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.
- The panel design
- The lumber that lines each rough opening, the corner and end posts, the panel sealant, tape and the long panel screws, which the maker's details list
- Openings are not deducted from the wrap, the cladding or the board
- Lifting
- Trims, flashings at openings, corners and starter strips, and the battens for a drained cladding
- Taping, finishing and painting the board, and any vapour control, which the panel maker's details and the climate decide
The reference
Every line the reading looks for
For Wall run length 33 ft · Panel height 8 ft · Windows 2 · Window rough opening width (each) 3 ft · Window rough opening height (each) 4 ft · Doors 1 · Door rough opening width (each) 3 ft · Door rough opening height (each) 7 ftWall run length 10 m · Panel height 2.44 m · Windows 2 · Window rough opening width (each) 0.9 m · Window rough opening height (each) 1.2 m · Doors 1 · Door rough opening width (each) 0.95 m · Door rough opening height (each) 2.1 m. 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.
SIP wall panels, splines and plates
9–11 panels
Panels are bought whole at full height and the openings cut out of them, and the last panel in a run is cut down; nothing spare is added. 9 net, 11 with 15% added.
Open the SIP Wall Panel Calculator (Structural Insulated Panels, Splines and Plates)House Wrap
1 roll
One figure, with the lap allowance the material needs already inside it at 10%.
Open the House Wrap CalculatorVinyl siding
2.77–3.04 squares
2.77 at 5% waste factor, 3.04 at 15%.
Open the Siding CalculatorDrywall or plasterboard lining the inside wall face
9–10 sheets (4x8 ft)
9 at 5% waste factor, 10 at 15%.
Open the Drywall Calculator
SIP wall panels, splines and plates
9–11 panels
Panels are bought whole at full height and the openings cut out of them, and the last panel in a run is cut down; nothing spare is added. 9 net, 11 with 15% added.
Open the SIP Wall Panel Calculator (Structural Insulated Panels, Splines and Plates)House Wrap
1 roll
One figure, with the lap allowance the material needs already inside it at 10%.
Open the House Wrap CalculatorVinyl siding
25.6–28.1 m²
25.6 at 5% waste factor, 28.1 at 15%.
Open the Siding CalculatorDrywall or plasterboard lining the inside wall face
9–10 sheets (2400x1200 mm)
9 at 5% waste factor, 10 at 15%.
Open the Drywall Calculator
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 SIP wall (structural insulated panels) takeoff runs the same calculators on the same measurements and shows what sits under each line here.
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 a structural insulated panel wall job need?
- It depends on the measurements, so this page asks for yours. At the size it opens on — Wall run length 10 m · Panel height 2.44 m · Windows 2 · Window rough opening width (each) 0.9 m · Window rough opening height (each) 1.2 m · Doors 1 · Door rough opening width (each) 0.95 m · Door rough opening height (each) 2.1 m — the lines come to: SIP wall panels, splines and plates, 9–11 panels; House Wrap, 1 roll; Vinyl siding, 25.6–28.1 m²; Drywall or plasterboard lining the inside wall face, 9–10 sheets (2400x1200 mm). In imperial units — Wall run length 33 ft · Panel height 8 ft · Windows 2 · Window rough opening width (each) 3 ft · Window rough opening height (each) 4 ft · Doors 1 · Door rough opening width (each) 3 ft · Door rough opening height (each) 7 ft — they come to: SIP wall panels, splines and plates, 9–11 panels; House Wrap, 1 roll; Vinyl siding, 2.77–3.04 squares; Drywall or plasterboard lining the inside wall face, 9–10 sheets (4x8 ft).
- Which line on a structural insulated panel wall quote varies the most?
- The SIP wall panels, splines and plates: 9–11 panels for a job measured Wall run length 10 m · Panel height 2.44 m · Windows 2 · Window rough opening width (each) 0.9 m · Window rough opening height (each) 1.2 m · Doors 1 · Door rough opening width (each) 0.95 m · Door rough opening height (each) 2.1 m, depending on how much is allowed for loss over the net figure, up to 15%.
- What does a structural insulated panel wall quote often leave out?
- The reading names every line of the job that nothing on the quote reads as — any of the 4 lines the takeoff measures. The takeoff also lists 6 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.