When it's time to add insulation to your home, you'll likely gather several insulation quotes from different contractors.

But how do you know which insulation estimate is truly best for your needs?

Price is only part of the story. The materials used, the coverage promised, the warranties included, and even the contractor's reputation should all factor into your decision. Taking the time to compare contractor quotes side-by-side ensures you'll end up with insulation that improves comfort, saves energy, and provides lasting value, according to This Old House.

At RetroFoam of Michigan, we've been helping homeowners across the Lower Peninsula since 2002. We know we aren't the only option, which is why we encourage homeowners to compare insulation estimates carefully before choosing a contractor.

Let's walk through the most important things to look at when you're evaluating home insulation quotes.

Comparing Home Insulation Estimates

When an insulation contractor comes to your home, they will listen to the problems you're experiencing and start taking measurements.

The real work begins for you once they hand you the quote for the project. Let's take a look at all of the things you should take into consideration before you sign on the dotted line.

Insulation Materials

One of the biggest differences you'll see when comparing insulation estimates is the type of material being recommended.

• Fiberglass is common but often requires tearing down drywall if you're insulating existing walls.
• Cellulose is typically blown-in and works well in attics and walls without demolition.
• Foam insulation, either spray foam or injection foam, creates an air seal and can be installed without tearing down drywall.

When reviewing quotes, make sure you understand what material is included and how it will be installed. For example, if your goal is insulating walls without major remodeling, fiberglass batts won't work, while injection foam or blown-in cellulose would be a better fit.

Insulation Coverage

Another key factor in comparing contractor estimates is how much insulation coverage is being proposed.

For example, one insulation contractor might quote a few inches of spray foam on your attic roof deck, while another recommends 6 to 10 inches. The lower bid may look attractive, but it might not deliver the performance you need.

Keep these points in mind:

• With traditional materials, focus on achieving the correct R-Value rather than just "more." Too much can be wasteful without added benefit.
• With spray foam, once the recommended thickness is achieved, you already have an effective air seal, and anything beyond that is unnecessary.

Warranties and Insurance

Warranties
can vary widely between insulation contractors.

Some are included at no cost, while others come with a fee. The length might range from 15 years to 30 years, or even a lifetime warranty.

In addition to warranties, make sure the contractor is licensed and insured. This protects you if something goes wrong during or after the installation. A good warranty and proper credentials should always be part of your comparison.

Additional Services Included in the Estimate

Not all insulation quotes cover the same services.

Ask what's included in the price. For example:

• Will they remove and dispose of old insulation?
• Is cleanup included after the project?
• Do they handle any necessary prep work, like protecting landscaping or sealing access points?

These details matter because the cheapest quote may leave out services you'd prefer to have handled by the contractor.

Contractor Reviews and Reputation

If two insulation quotes are close in price, reviews can be the deciding factor.

Check Google, Facebook, or Yelp to see what past customers are saying. Look for consistent themes -- whether positive or negative.

Better yet, ask the contractor for references. Speaking directly with previous homeowners can give you a clear sense of what to expect.

Word of mouth remains one of the most reliable ways to evaluate an insulation contractor.

Choosing the Right Home Insulation Quote

At the end of the day, the best insulation estimate is the one that balances cost, performance, warranty, and trust in the contractor.

Don't just focus on price -- make sure the solution fits your home's needs and long-term comfort goals.

Ready to learn more about insulation options for your home? Visit our Learning Center for resources to answer all of your questions, or request a consultation to get a personalized insulation quote.

Key Points:

• Don't just look at price -- compare materials, coverage, and services.
• Understand the type of insulation included (fiberglass, cellulose, foam).
• Verify insulation coverage is appropriate because more isn't always better.
• Check warranty length and confirm the contractor is licensed and insured.
• Ask what services, like old insulation removal or cleanup, are included.
• Read reviews and request references to evaluate the contractor's reputation.

Related Articles

Foam vs Fiberglass vs Cellulose: Which Insulation is Best for My Existing House?

How to Find and Hire the Best Residential Insulation Contractor for Your Project

Insulation Contractor Vetting Checklist: What You Need to Look For Before Signing the Contract