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Insulation Invoice Template

R-value, square footage, air sealing and removal. Free PDF, no account.

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Insulation is sold as a number the customer cannot see once it is installed, which makes the invoice the only proof of what they bought. R-value, material and depth belong on it — and so does air sealing, because it is usually the work that made the biggest difference and the line most often left out.

INVOICE Issued
Invoice number:INV-0001
Date of issue:August 2, 2026
Date due:August 16, 2026
Currency:USD
Issued by
Thermaline Insulation
740 Batten Road
55407 Minneapolis, MN
United States
office@thermaline.example
Bill to
Gunnar Vestergaard
1416 Elmwood Avenue
55104 St. Paul, MN
United States
g.vestergaard@example.com
Amount due
$6,557.00
Due in 14 days · Aug 16, 2026
What was installed
Existing fibreglass was removed because of rodent contamination, not as an upgrade. The attic was air sealed before insulating; depth rulers were set at four points and read 16.5 inches at completion, which is R-60 in cellulose. The bath fan previously terminated in the attic and now vents through the roof.
Description Qty Rate Tax Amount
Attic insulation — blown cellulose to R-60
1,340 sq ft, installed depth 16.5 in., rulers set
1340$2.15—$2,881.00
Air sealing
Top plates, penetrations, chases and attic hatch sealed before blowing
1$1,180.00—$1,180.00
Removal of existing insulation
Rodent-contaminated fibreglass removed, decontaminated and hauled
1340$1.40—$1,876.00
Ventilation corrections
Soffit baffles at 26 bays, bath fan ducted to the roof cap
1$620.00—$620.00
Subtotal$6,557.00
Total$6,557.00
Amount due $6,557.00
Terms
Net 14. Depth rulers are left in place so the installed depth can be verified at any time.
Invoice #INV-0001 · Thermaline Insulation · Page 1 of 1

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What to put on a insulation invoice

  • Area treated in square feet, by location: attic, walls, crawlspace, rim joist
  • The R-value achieved and the material used to reach it
  • Installed depth for blown material, which is how R-value is verified afterwards
  • Air sealing as its own line — it is separate work and it is what makes the insulation perform
  • Removal and disposal of old or contaminated insulation
  • Ventilation work: baffles, soffit clearance, bath fan ducting corrected

Questions

Why record installed depth as well as R-value?

Because depth is what anyone can check later. Blown insulation settles and coverage varies across an attic; a depth stated on the invoice and marked on the rulers in the attic is what lets a homeowner, an inspector or an energy auditor confirm they got what they paid for.

Is air sealing part of insulating?

It is separate work and should be a separate line. Insulation slows heat moving through materials; air sealing stops it moving around them. Insulating a leaky attic without sealing it first is the most common way this trade disappoints a customer who paid for a warmer house.

Should old insulation always come out?

No, and the invoice should say why it did. Removal is warranted where the material is contaminated, wet or rodent-affected — and it roughly doubles the job, so a customer who sees it billed without a reason assumes it was optional.

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