Insulation installer invoice template
Insulation installer invoice template: product and thickness per area, loft hatch and pipe lagging, boarding, and a clear line between grant and client share.
Templates by industry
- Mineral wool loft insulation, 200 mm layer, per m²
- Insulate and draught-proof the loft hatch
- Raise the water tank and lag the pipes
- Loft boarding on raised supports, per m²
Preparation guide
Example workflow
Confirm scope and quantities
Example: reconcile the approval and work record for "Mineral wool loft insulation, 200 mm layer, per m²" to establish the quantity for this invoice.
Record delivery and acceptance
Check completion for every line, including "Loft boarding on raised supports, per m²". Confirm completed quantities, site photos, agreed test results and any remaining remedial work.
Send the billing record
Send the final charges, delivery reference and due date to the customer, then reconcile payment against the invoice number.
An insulation invoice is often read twice: by the homeowner, and later by whoever wants proof of what is in the roof, such as a buyer, a surveyor or a funding body. This template records the product and the thickness laid, the area of each part of the building, and the jobs that come with a loft, like insulating the hatch and lagging pipes. Where part of the cost is paid by a grant or scheme, the notes show it beside the client’s own share.
Fields to prepare
- Deliverables and line items
- Mineral wool loft insulation, 200 mm layer, per m², Insulate and draught-proof the loft hatch, Raise the water tank and lag the pipes, Loft boarding on raised supports, per m²: record the quantities actually supplied and the service period.
- Mineral wool loft insulation, 200 mm layer, per m²
- Give the product name and the depth after laying, measured at a few points, and the area between the eaves.
- Insulate and draught-proof the loft hatch
- Describe how the hatch was insulated and sealed; a cold hatch is a common complaint after a loft job.
- Raise the water tank and lag the pipes
- Say which tank and which pipes were treated, since pipes left above new insulation can freeze.
- Loft boarding on raised supports, per m²
- Price boarding by area and note that it sits on raised supports, as the client chose, rather than on the insulation.
- Site and measured quantities
- Record the site, work zones, areas, lengths or counts, and access hours.
- Materials and work stages
- Specify materials, labor, removal, disposal and making-good allowances, and completion criteria for each stage.
- Scope to agree
- Name the product and the thickness installed, give the area per part of the building, and keep any grant or funded share apart from what the client pays.
Before sending
- Does “Mineral wool loft insulation, 200 mm layer, per m²” show the quantity actually supplied, not the quantity first quoted?
- Is “Insulate and draught-proof the loft hatch” charged at the rate the customer agreed to, with any change approved?
- Is “Raise the water tank and lag the pipes” finished and accepted, or does it belong on a later invoice?
Show 4 more
- Does “Loft boarding on raised supports, per m²” show the quantity actually supplied, not the quantity first quoted?
- Agree how quantity changes following measurement or drawing revisions will be approved.
- Confirm client-supplied materials and work that other contractors must finish first.
- Match completed work to the order or approval record, and confirm the payment due date and amounts already received.
Worked example with sample figures
The figures below are invented to show how the template adds up: 4 lines in USD, with an example tax rate of 8%.
| Item | Quantity × unit price | Amount |
|---|---|---|
| Mineral wool loft insulation, 200 mm layer, per m² | 48 × $9.00 | $432.00 |
| Insulate and draught-proof the loft hatch | 1 × $85.00 | $85.00 |
| Raise the water tank and lag the pipes | 1 × $120.00 | $120.00 |
| Loft boarding on raised supports, per m² | 12 × $18.00 | $216.00 |
| Subtotal | $853.00 | |
| Sales tax (8%) | $68.24 | |
| Total | $921.24 | |
Net amount $853.00, sales tax $68.24, total payable $921.24.
What the document must show
The details an invoice has to show, and why each one matters, are set out in the guide below.
The sales tax depends on where the work is supplied, so set the rate that applies to your customer before sending.
Official rate reference: US government: state and local taxes
Full requirements: How to write an invoice: a step-by-step example
Frequently asked questions
Part of the job is paid by a grant: how do I show it?
Invoice the full price, then show the funded amount and the client’s share in the notes, with the scheme’s reference if it has one. Check how the scheme itself wants to be invoiced.
Should the invoice say how thick the insulation is?
Yes. Depth and product are what a buyer or surveyor looks for later, and they let the client check the job against the quotation.
How is the sales tax worked out on this invoice?
The worked example above uses an example rate of 8%: $68.24 on a net amount of $853.00, for a total of $921.24. The editor recalculates all three when you change a quantity, a price or the country.
Can I download it as Excel, Word or PDF?
Yes. A PDF needs no account: fill in the template and use Print / PDF. The Excel and Word files download from this page with a free account, and the spreadsheet keeps its formulas, so changing a quantity updates the tax and the total.
Can I email it to the customer?
Yes, from your own mail app. With a free account, the editor’s download menu offers Email this document, which opens your mail app with a message about the document already written. QuoteBill sends nothing itself, so save the PDF and attach it before you send.
Read next
Reading for the Insulation installer invoice template: How to write an invoice: a step-by-step example and Credit note vs invoice (and credit memo): how to issue one. The VAT and GST calculator works out the tax line for you.