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TRUSTED BY ISSAQUAH, WA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon491
    Verified insulation services reviews

Verified Reviews for Insulation Service pros in Issaquah, WA

*The Angi rating for Insulation Service companies in Issaquah, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.

*The HomeAdvisor rating for Insulation Service companies in Issaquah, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.

Last update on August 26, 2026

Find Insulation pros in Issaquah

Avatar for Insulation Northwest
Insulation Northwest
4.8(
107
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install+2 more

Serving Issaquah, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Warranties offered

"Zero complaints. I have worked with Insulation Northwest twice now and have been very satisfied both times. The sales agent worked with me to find the best and most cost-effective solution, the customer service team is responsive, and the installers were professional, curtious, and pleasant. I recommend Insulation Northwest for all your insulation needs!"
Additional Photos
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18 neighbors recently requested a quote
Recommended by74%of homeowners
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Avatar for Insulation Co., LLC - Removal & Clean Outs
Insulation Co., LLC - Removal & Clean Outs
4.9(
226
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Issaquah, WA and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"Great crew removed old insulation cleaned and encapsulated mold blew in new insulation replaced venting and insulated fast and professional ð  Â"
1
2
3
1
2

+46

Response time5 hrs
Recommended by49%of homeowners
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Avatar for PNW Insulation, LLC
PNW Insulation, LLC
4.7(
255
)
Batt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - InstallBlown-In Insulation - Install or Upgrade

Serving Issaquah, 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%
42 neighbors recently requested a quote
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Avatar for Lake Atitlan Insulation, LLC
Lake Atitlan Insulation, LLC
5.0(
20
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Issaquah, WA and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"We had Lake Atitlan Insulation remove our old insulation and replace it with R-38. I enjoyed working with Nanni from the initial meeting to the final step of installing the insulation. Very knowledgeable lady and truly exceptional customer service. A highly recommended insulation contractor."
8 neighbors recently requested a quote
Recommended by5%of homeowners
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Avatar for Insulation Pro Inc.
Insulation Pro Inc.
5.0(
19
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install

Serving Issaquah, 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%
7 neighbors recently requested a quote
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Avatar for Madrona Insulation
Madrona Insulation
4.9(
68
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+2 more

Serving Issaquah, 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!"
.
.
5 neighbors recently requested a quote
Recommended by96%of homeowners
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Madrona Home Services, LLC
4.7(
74
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Issaquah, WA and surrounding areas

Approved

In business since 2010

Free estimates

Customers say: Quick response

"We had a wonderful attic insulation experience with Madrona Home Services! They had the best pricing, including the Puget Sound Energy discount and they managed all the paperwork. We were able to schedule two weeks after the quote, and their team worked fast and efficiently on installation day. They removed old saw dust insulation and laid down batting, as well as going above and beyond by creating an 8x8 storage platform. Our house feels noticably cozier with consistent temperatures. 10/10"
Response time1 day
5 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for HomeRx
HomeRx
4.3(
110
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Issaquah, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Credit card accepted

"Insulate attic kneewalls; blow in ceiling insulation. Good knowledgeable estimator. Good installers. Professional job, clean afterwards. I'd hire them again."
Masking off rooms
West Seattle custom
Lead safe practices
Yard taped off for Lead Safe
Keeping your home clean is important to us

+12

Response time1 day
169 neighbors recently requested a quote
Recommended by85%of homeowners
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Avatar for AT Foam
AT Foam
5.0(
6
)
Spray Foam Insulation - Install

Serving Issaquah, 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%
1 neighbors recently requested a quote
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Showing 1-10 of 136
Insulation questions, answered by experts

Visible mold or mildew strongly indicates that a previous insulation service failed to control moisture. You should look for compressed, wet fiberglass batts or torn ground vapor barriers in your crawl space. Unusually high heating bills during mild Issaquah winters also point to underperforming materials. Finally, watch for ice dams on your roofline, which signal escaping heat.

Helpful?

Select mold-resistant materials to combat the persistent moisture in WA. For attic insulation service, blown-in materials provide the required depth without disturbing existing framing. In wet soil conditions, use ground vapor barriers and install insulation directly on sealed crawl space walls. Always apply appropriate vapor retarders to allow drying potential and meet strict regional energy code requirements.

Helpful?

Proper moisture control and high-quality air sealing dictate the success of any insulation service in Issaquah. The heavy annual rainfall creates persistent humidity challenges, making vapor barriers essential in attics and crawl spaces. You must also balance attic insulation depth with adequate ventilation to prevent roof deck condensation. Additionally, ensure your installation accommodates WA seismic retrofitting requirements.

Helpful?

Consider how improved air sealing during your insulation service reduces wildfire smoke infiltration in the summer. If you live on a sloped or forested Issaquah lot, assess the site for cold air pooling and poor drainage. Homeowners in historic areas must carefully navigate older framing and wiring. Always hire a licensed WA contractor to ensure safe, compliant work.

Helpful?

Start by scheduling a certified energy audit to shape the scope of your insulation service. You should also check for local utility rebates, as these programs dictate specific installation standards. Since Issaquah has a wet climate, always assess your crawl spaces and basements for moisture. Finally, secure the required building permits to ensure your project meets strict WA energy code standards.

Helpful?

The Issaquah, WA homeowners’ guide to insulation services

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

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