Installer Vetting Checklist

What this tool is

The Installer Vetting Checklist is a simple PDF you can download and use when talking to insulation companies. It helps you ask clear questions and keep notes in one place.

This is useful if you are comparing attic, wall, crawlspace, basement, blown-in, batt, spray foam, or air-sealing work. A good installer should be able to explain the scope, the material, and the R-value the job is meant to reach. R-value is a simple way to measure how well insulation slows heat flow. Higher R-value means more resistance to heat flow, but that does not mean the highest number is always the best choice. The right target depends on your climate, home, and local code.

If you want more background before you call anyone, see how to vet an insulation installer.

How to use it

1. Download the PDF and print it, or fill it out on your phone or computer.
2. Use one copy for each installer you contact.
3. Ask each company the same questions so you can compare them fairly.
4. Write down the proposed material, the area to be insulated, and the R-value target.
5. Confirm that the installer is licensed and insured, and verify that information yourself.
6. Ask for the full scope and price in writing before paying any deposit.

This tool does not replace local code, permits, or professional advice. It is simply a practical way to stay organized and avoid missing key questions.

What’s inside the checklist

Next step

Start with the checklist, then compare real project details carefully. Prices for insulation are estimates only, not guarantees, and the real cost depends on the area insulated, the R-value target, the material, your home’s age and access, whether old insulation must be removed, and your region. You can review typical ranges on our costs page.

If you want help finding local companies to contact, Thermline is a free matching service that can connect you with licensed and insured insulation installers near you. You can start here: get matched.