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TRUSTED BY SEATAC, WA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon154
    Verified insulation services reviews

Find Insulation pros in Seatac

Avatar for Insulation Northwest
Insulation Northwest
4.8(
107
)

Serving Seatac, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Warranties offered

"Insulation NW did an excellent job of removing old inadequate insulation from an attic and crawlspace and replacing it with new insulation and wrapping the ductwork. They had two crews, one for the attic and one for the crawlspace, working for many hours to complete the job. A vapor barrier was also installed in the crawlspace. We paid a very reasonable price after the large PSE Rebate was applied."
Additional Photos
Additional Photos
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25 neighbors recently requested a quote
Recommended by74%of homeowners
Avatar for PNW Insulation, LLC
PNW Insulation, LLC
4.7(
252
)

Serving Seatac, WA and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"PNW Insulation did a great job. Sprayed insulation in our walls and rolled insulation in the attic space. They were fast and professional, skilled and easy to communicate with. Would recommend them 100%"
Before
All insulated
Final with Wmp
Getting ready to start
Inside office

+22

Response time1 day
Response rate93%
39 neighbors recently requested a quote
Avatar for Lake Atitlan Insulation, LLC
Lake Atitlan Insulation, LLC
5.0(
20
)

Serving Seatac, WA and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"I hired the company Lake Atitlan Insulation Llc for the cleaning of my attic and new insulation. I was satisfied with their service. They are very punctual and respectful. I recommend them."
3 neighbors recently requested a quote
Recommended by5%of homeowners
Avatar for Insulation Pro Inc.
Insulation Pro Inc.
5.0(
19
)

Serving Seatac, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Warranties offered

"I hired insulation pro inc to replace my old insulation in crawl space Eric came and give me a reasonable price And they over delivered. Highly recommend them"
Attic project
During job progress
During process
Crawl space full service
Before project crawl space

+59

Response time5 hrs
Response rate95%
10 neighbors recently requested a quote
Avatar for Madrona Insulation
Madrona Insulation
4.9(
68
)

Serving Seatac, WA and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"It went very well from the estimate process. Rory took the time to explain the process. As I had questions, he took the time to talk to me and explain in detail. Deb coordinated the scheduling extremely well. Among the estimates I got they were the most reasonably priced. I started out only doing the attic. They did such a good job, I decided to go ahead and have the crawlspace insulated as well by Madrona Insulation. BTW, shout out to a terrific installation crew!"
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7 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for AT Foam
AT Foam
5.0(
5
)

Serving Seatac, WA and surrounding areas

Approved

In business since 2003

Free estimates

Warranties offered

"Unbelievable company such great work. John is one of the best business man I have ever dealt with he deserves 20 stars. And his crew does to if you ever need insulation go here. No place else. Best in the state 👍👍👍👍👍"
Roof deck closed cell spray foam
SPF roof deck
SPF ceiling and gable end wall
Flat ceiling 2lb closed cell
Flat ceiling roof deck

+21

Response time10 hrs
Response rate98%
2 neighbors recently requested a quote
Avatar for A G INSULATION LLC
A G INSULATION LLC
5.0(
9
)

Serving Seatac, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Offers commercial services

"Erick with AG construction came to my rental a week ago. He had the proper equipment to crawl under the house and determine what I needed to fix broken heat pipe, replace vapor barrier and replace insulation from a plumbing leak. I also had signs of rodents. He gave me a bid that was reasonable and was able to have his team on the job within a week. I stopped by as the work was being done and saw old insulation in bags headed for the dump. The area was left clean and his photos of the job look great. This is a very professional company and I would use them again for any crawl space work."
My jobs
My jobs
My jobs
My jobs
My jobs

+5

Response time9 hrs
Response rate97%
13 neighbors recently requested a quote
Avatar for Acorns Attics & Crawls, LLC
Acorns Attics & Crawls, LLC
5.0(
17
)

Serving Seatac, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"I hired Acorn Attics to insulate my house and I couldn’t be more happy with their work. Phil and his crew were on time, friendly and incredibly hard workers. He worked with me on scheduling and made sure to keep our project moving even when we had a setback with another repair. I highly recommend them. They will get the job done. Thank you Acorn Attics and Crawl Spaces!!"
Response time4 hrs
Response rate100%
27 neighbors recently requested a quote
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Insulation questions, answered by experts

Minimal, mainly occasional checks for damage or mold in extreme conditions.

Doubling the insulation in your home also doubles the R-value of said insulation. In other words, by adding more insulation, you can reduce the heat loss by half. Most homes benefit from increasing insulation. Older homes, in particular tend to have less insulation as is, so doubling your insulation could drastically reduce your energy bills, keep your home more comfortable, and take the strain off your HVAC system.

It is possible to insulate your walls without removing drywall, but it’s not a good idea to attempt the work yourself. A professional can use blown-in insulation or spray foam insulation to fill wall voids without opening up the walls, and the option they use typically depends on your climate and whether or not there’s insulation in your wall already that can remain in place. Spray foam insulation costs more and isn’t always a viable option, but it’s a better insulator. Call in an expert to help decide which is right for you.

Polyisocyanurate foam, or polyiso for short, has the highest R-value per square inch: 6.5 to 6.8. Polyiso is a rigid foam that comes with a reflective foil on both sides to serve as a radiant barrier. Given its high R-value, rigid foam is usually meant for foundations and basement walls.

No, you should avoid using antifreeze in your outdoor spigot to prevent freezing. Antifreeze can contaminate your water supply and harm the environment. Instead, employ safer and more effective methods for winterizing your spigot, such as draining the spigot and using insulation, to protect it from freezing temperatures.

The Seatac, WA homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.