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Find Insulation pros in Federal Way

Avatar for Insulation Northwest
Insulation Northwest
4.8(
104
)

Serving Federal Way, 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
Additional Photos
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21 neighbors recently requested a quote
Recommended by76%of homeowners
Avatar for PNW Insulation, LLC
PNW Insulation, LLC
4.7(
251
)

Serving Federal Way, 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 Insulation Co., LLC - Removal & Clean Outs
Insulation Co., LLC - Removal & Clean Outs
4.9(
224
)

Serving Federal Way, WA and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"Insulation Co (Jo Estrada) had insulation installers come to our century old house to remove old attic insulation, do a bit of mold remediation, insulate the bathroom fan exhaust, cover the two previously open gable spaces at either end of our roof, then blow in new cellulose insulation. All this took a day, and all was cleaned up like nothing happened. Polite, efficient, professional, and the price was competitive."
1
2
3
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2

+46

Response time5 hrs
Recommended by49%of homeowners
Avatar for Lake Atitlan Insulation, LLC
Lake Atitlan Insulation, LLC
5.0(
20
)

Serving Federal Way, WA and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"Lake Atitlan Insulation did an excellent job in my attic. They removed the old insulation, installed a solar attic vent, replaced the bathroom vent duct, and added new blown-in fiberglass insulation. They also installed radiant barrier on all the attic roof rafters. The work was completed professionally and thoroughly. I highly recommend them."
6 neighbors recently requested a quote
Recommended by5%of homeowners
Avatar for Insulation Pro Inc.
Insulation Pro Inc.
5.0(
19
)

Serving Federal Way, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Warranties offered

"We literally been roasted in our house especially on the second floor with that late heatwave going on . Eric from Insulation Pro took care of our attic. Full insulation replacement. Some mold problems and vents to reconnect . I was skeptic I even tested with the thermostat furnace but it literally did the job. Couldn't be happier."
Attic project
During job progress
During process
Crawl space full service
Before project crawl space

+59

Response time5 hrs
Response rate91%
8 neighbors recently requested a quote
Avatar for Madrona Insulation
Madrona Insulation
4.9(
68
)

Serving Federal Way, WA and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"I got 5 quotes from providers that were all well rated on Angie's list. Two were about 10% more, open was very close to this one and one was 20% less expensive but did not offer the same services. After I accepted the quote, they called and said they could come the next day.  Some of the other companies told me they were about a week behind. The crew showed up on time and started to work immediately. They did everything I expected except for adding insulation to one wall. When I questioned that, they said it was not included in the estimate. I called the office and found it was not, later confirmed with the estimator. While I was calling, the crew got more insulation and did that wall anyway. I offered to pay for the extra work and Rory told me there would be no extra charge. They were finished and gone in less than 3 hours. I am very pleased with the work and feel I got good value for my money.
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8 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for JTS Insulation, LLC
JTS Insulation, LLC
5.0(
15
)

Serving Federal Way, WA and surrounding areas

Approved

In business since 2022

Free estimates

Offers commercial services

"We got out Attic and crawlspace insulation removed and replaced, and I was highly impressed by the quality of work. He was Very clean, and very knowledgeable and explained everything in detail. I shopped around and found this was the best price. Highly recommended."
Response time3 days
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for AT Foam
AT Foam
5.0(
5
)

Serving Federal Way, WA and surrounding areas

Approved

In business since 2003

Free estimates

Warranties offered

Washington Spray Foam Insulation Leaders\n\nServing Seattle, Tacoma and Olympia areas for spray foam insulation, AT Foam Insulators is an owner-operated Washington business doing our part to reduce the nation?s dependence on foreign energy, improve the indoor air quality in our community, and provide the most professional insulation services in the great state of Washington. We accomplish these goals by taking the time to understand your needs and ensuring that we only offer the highest quality spray foam insulation product.\n\nWe are an innovative spray foam insulation installer using the latest spray foam products and techniques to ensure superior energy performance. By researching independent studies and government reports on energy and health issues related to our industry, we have chosen the safest, healthiest and highest performing insulation systems available today, which are from DEMILEC (USA).

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
Madrona Home Services, LLC
4.7(
74
)

Serving Federal Way, WA and surrounding areas

Approved

In business since 2010

Free estimates

Customers say: Quick response

"We are very happy with the services provided by Madrona. Everything was very easy from our standpoint. The crew cleaned up existing debris, blew in the new insulation and cleaned up after themselves very nicely. The bid we received was very fair and the work was well worth it! We even love the new ceiling cover they made for us on site."
Response time1 day
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for A G INSULATION LLC
A G INSULATION LLC
5.0(
9
)

Serving Federal Way, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Offers commercial services

A G INSULATION LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. \n

My jobs
My jobs
My jobs
My jobs
My jobs

+5

Response time12 hrs
Response rate95%
14 neighbors recently requested a quote
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Showing 1-10 of 153

FAQs for insulation service projects in Federal Way, WA

Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.

R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.

Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.

You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.

Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.

The Federal Way, 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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