An Austin attic can run far hotter than the rest of the house, which is why insulation services in Austin get called most when the first summer bill arrives. The businesses below hold more than 660 Google reviews between them, rated from 4.7 to a flat 5.0, and they differ in method: radiant barrier and blown-in fiberglass, open-cell spray foam, cellulose, or clean-out of the old material first.
Short answer: The HeatBusters has the most reviews on this page, at 4.9 stars from more than 270 Google reviews, with radiant barrier, blown-in insulation and garage work. Cooler Green Solutions (5.0) is described by reviewers for spray foam, Affordable Insulation (4.9) for attic top-ups and garage doors, Payless Insulation (4.9) for removal and new cellulose, and Stellrr Insulation (4.7) for cellulose and rockwool.
What the scorecard measures
Every number on this page comes from public Google data on the date shown, not from opinion or payment. Rating is the live Google star average. Review volume is how many customers have rated the business. Confidence weighs the rating by that volume, so a 4.9 from hundreds of reviews counts for more than a 5.0 from a few. Recency reflects how recently people are still reviewing. No business can pay to change these numbers.
What drives insulation pricing in Austin in 2026
The reviews give no dependable totals, so there is no cost table. Price follows the attic or wall area, the material (fiberglass, cellulose, rockwool, spray foam), the R-value you want, whether old insulation must be removed, and access. Ask for a written quote that lists R-value, material and removal separately.
Where these insulation contractors work
The HeatBusters is in South Austin, Cooler Green Solutions in the west near Lakeway, Stellrr Insulation in the southwest, and Payless Insulation in the north. Reviewers mention jobs in Dripping Springs and Hill Country homes. Affordable Insulation serves the Austin area, plus Georgetown and Round Rock, per its site. If you’re searching for insulation near me, ask each firm about your neighborhood.
What to ask an insulation contractor
- What R-value will you install, and how many inches does that mean in my attic?
- Do you remove the old insulation, and is cleanup included?
- Is radiant barrier, added insulation or both right for my roof?
- How do you handle air sealing, baffles and ventilation?
- Can you share product data sheets for any spray foam?
Frequently asked questions
Do Austin insulation companies remove old attic insulation?
Several do. Payless Insulation reviewers describe full removal followed by new cellulose, Stellrr reviewers mention removing old cellulose and batts, and The HeatBusters customers describe an attic clean-out.
What is radiant barrier, and who installs it in Austin?
Radiant barrier is a reflective layer in the attic that The HeatBusters’ site says blocks at least 90 percent of radiant heat. Its reviewers describe radiant barrier installs, and one paired it with 12 inches of blown-in fiberglass.
Which of these companies do spray foam?
Cooler Green Solutions reviewers describe open-cell spray foam and an ignition barrier. The HeatBusters lists spray foam on its site, and Payless Insulation’s site lists spray-on cellulose or foam.
Can an Austin company insulate a garage door?
Yes. One Affordable Insulation customer had a garage door insulated within a day of calling, and its site lists garage door insulation. A HeatBusters customer sprayed insulation in a garage.
Where to start
The HeatBusters is the safest first call for a hot Austin attic, given its large review base. Call Cooler Green Solutions for spray foam, Payless or Stellrr for a full strip-and-replace, and Affordable Insulation for a quick top-up or garage door. Get the R-value and removal scope in writing.
