Spray Foam Insulation in Seattle, WA

Find top-rated spray foam contractors and save up to 35% on energy bills

Compare verified spray foam insulation contractors serving Seattle, Washington. Whether you're insulating a new build, retrofitting an existing home, or upgrading attic and crawl space insulation, our pre-screened Seattle contractors specialize in both open-cell and closed-cell spray foam. Get free quotes and read verified reviews from Seattle homeowners.

💰 Estimated Energy Savings in Seattle

35%
Average Energy Savings
Typical range: 30% - 40%
$1,596
Estimated Annual Savings
Based on $380/month average energy cost
4 years
Average Payback Period
Return on investment timeline

Note: Actual savings vary based on home size, current insulation, energy rates, and climate conditions. These estimates are based on Department of Energy data for Cold.

Verified Contractors in Seattle

Cascadia Spray Foam Insulation of Seattle

Specialist

Direct: 4253863500

5
5 Google reviews

Recent Reviews:

Tony Fit★★★★★5 months ago

Got Cascadia Spray Foam Insulation to take care of my in-laws place up in Seattle. The house was older and had some serious drafts, especially in the winter. The crew came out, did a full walk-through, and explained exactly what they were gonna do. Super professional and easy to work with. The difference after the spray foam was like night and day. The house stays warm now without the heat running non-stop. My in-laws are beyond happy and I’m glad we called these guys. Definitely recommend.

Zechariah Brownn★★★★★6 months ago

Finding this company made my cousin's day. He needed a reputable spray foam insulation company for his business in Seattle and I was able to recommend this company.

John Dunstan★★★★★7 months ago

Thank you for having all your information and services clearly outlined and updated, it really helps when searching for service providers

Renton Insulation

Direct: 4254341061

5
1 Google reviews

Recent Reviews:

Amos Nyanaro★★★★★9 months ago

Signature Insulation Inc

5
24 Google reviews

Recent Reviews:

Billy GeBron jr★★★★★8 months ago

Five star company that deserves 6 stars they worked out perfectly ontime finished when they said they would didn't have any surprises and the work came put beautiful I recommend you go with these guys you won't regret it

gideon cheplak★★★★★3 months ago

Awesome professionals keep it up

Emily Wilson★★★★★5 months ago

Did a fantastic job installing insulation in our granny suite. Affordable, friendly and efficient

Absolute Spray Foam Insulation Auburn

Specialist

Direct: 2536003081

5
5 Google reviews

Recent Reviews:

Mich Paine★★★★★2 years ago

I had some questions about what I needed done they were quick to return my call . Answered all of my questions to my satisfaction . Bid and completed job in a fast and professional manner everyone was a pleasure !

Ryan Freer★★★★★2 years ago

The absolute spray foam has made a big difference with my electric bill by coming down between 30% to 40%. I also want to mention that Michael was especially professional and went out of his way to squeeze me in the schedule sooner than later.

kit wolf★★★★★2 years ago

The staff I dealt with were very professional and informative. I recommend them and would definitely use them again.

PNW Insulation LLC

Direct: 2067396060

5
6 Google reviews

Recent Reviews:

Shad Mattingly★★★★★2 years ago

We just used PNW Insulation to spray foam in 2 containers. They were very prompt and communicated well leading up to the job, during the job, and after completed. They quoted me a price over the phone and stuck to their price quoted even though it was several months before I called them back to do the job. They were on time and their crews were very respectful and quick. They went above and beyond to mask everything off to keep over spray to a minimum. They cleaned up very well and shaved the high spots and the studs so it was sheetrock ready. They even came back a couple days later because they realized that they had accidently taken one of my lights that I did not even realize was gone, but they wanted to make sure I got it back. I highly recommend these guys and will be using them again to spray foam in my shop and home in the near future. 5 STAR + SERVICE!!

Colin McEvoy★★★★★a month ago

Absolutely recommend these guys over and over. I contacted Andre asking about attic insulation and crawlspace work. He was very knowledgeable and when it came time for the quote he found out I was eligible for a rebate from PSE. Saved me a lot of money and when the crews came out to do the work, they were able to get everything done in a day! They removed the old insulation and did blow in for the attic And new insulation and liner for the crawlspace. Very happy!!

Chad Poznanski★★★★★3 years ago

Had a great experience working with PNW for a remodel. The crews were very professional! Did great work and very clean after the job was complete. Highly recommend PNW for all future insulation needs!

Willow Insulation Services

Direct: 4256002146

5
5 Google reviews

Recent Reviews:

Billy Fry★★★★★a year ago

My experience has been very good. They have been very respectful and treated me like an actual person. A great company and I would highly recommend.

Thomas Faulk★★★★★a year ago

Theses are awesome, respectful and they always have smiles on there faces go with these guys you won't be sorry you did

Shaun Glasgow★★★★★a year ago

Very communicative. They work very hard at developing and maintaining a positive repor with customers. I would work with them again in the future as need arises.

Insulation Co

Direct: 2064977358

5
8 Google reviews

Recent Reviews:

Massoud M★★★★★a month ago

I requested quotes from three different companies to add insulation to my attic, which required a pre-inspection due to the roof design. All three companies inspected the space, but I ultimately chose Insulation Co after several helpful conversations with Joe. He clearly explained the issues and provided thoughtful recommendations that gave me confidence in their approach. Julio and his team did an excellent job removing the old insulation and installing the new material. The entire process was professional, efficient, and well done—I’m very pleased with the results.

Bradley Hagglund★★★★★a year ago

I had an amazing experience with Insulation Co! Being a new homeowner I had many questions. Talking to Jo to setup the appointment put my mind at ease. He was very knowledgeable and answered every concern I had. When the installers showed, they were on time and professional. Pedro and his crew did a quick and thorough job! For photos the yellow insulation is old, new is pink.

Julia Ednie★★★★★3 weeks ago

Jo and his crew at Insulation Co. were great to work with for replacing the insulation as part of our studs-out renovation of our 1926 home. Our project ran into several delays initially (not related to insulation) and Jo stuck with me through multiple re-schedules until we were ready to have the insulation installed. His crew was efficient and did a fantastic job with the install, and his price was most reasonable. We passed the insulation inspection on the first pass. I would definitely work with Jo/Insulation Co. again and would recommend them to anyone.

USA Insulation of North Puget Sound

Direct: 2068886922

5
7 Google reviews

Recent Reviews:

Sam A★★★★★2 months ago

I had the best experience with this company. From start to finish, they made everything easy and stress free. The crew showed up on time, explained what they were going to do, and really knew their stuff. They sprayed foam in my crawlspace and the results were noticeable right away, the floors feel warmer, I don’t feel the drafts anymore, and the space looks super clean. I’d give them 10 stars if it was possible.

Melissa Ballou★★★★★3 months ago

We had a great experience using USA Insulation of North Puget Sound! Every step of the process was professional and easy. We worked with Max (owner/coordinator), Jason (estimator), and Jaime (installer). They all listened to our needs and completed the job quickly - and it looks great! Highly recommend working with this team!

John Hidell★★★★★a year ago

Absolutely a great experience from Max bidding it to his crew installing the products. I won’t forget their phone number as I’m sure my friends and family will need there services. Prompt on time. Clean up was spotless just all around Professional Company.

316 Insulation Auburn

Direct: 2533385673

5
297 Google reviews

Recent Reviews:

Tabitha Pomeroy★★★★★a week ago

316 Insulation was wonderful to work with! Customer service from Travis was prompt, professional, and helpful. Travis took the time to explain the process and provided pictures of what he saw in our attic. We had a full clean out of the existing insulation and install of new insulation. Kaleb. Shane, and Vic did the install and they were on time and finished quickly. They even made sure everything was clean before they left. Super happy with the decision to go with 316 Insulation.

Jose Gonzales★★★★★a month ago

Exceptional Service and Professionalism from 316 Insulation 316 Insulation stands out as one of the most professional and knowledgeable companies I’ve had the pleasure of working with. Their team demonstrates exceptional expertise, transparency, and integrity in every aspect of their work. I was particularly impressed with their commitment to providing a clear and comprehensive analysis, as well as their strong support for military and veteran clients. Kaleb and Austin delivered outstanding service, completing the crawl space repair with precision, timeliness, and attention to detail. Their proficiency and dedication ensured the results exceeded expectations, reflecting 316 Insulation’s commitment to excellence. I highly recommend 316 Insulation for any residential or commercial insulation needs. Their combination of technical expertise, professionalism, and customer care sets a high standard for service in the industry.

reliable renovations★★★★★a month ago

316 insulation will be my number one choice for any installation project. Their communication was excellent and they periodically gave me a phone call to check my progress on my Construction project so that there wasn't any delays. Their staff is very nice and they did an excellent job. Highly recommended.

Prime Spray Foam Insulation Lakewood

🏆Certified Pro

Direct: 2532433175

5
41 Google reviews

Recent Reviews:

Valle★★★★★2 years ago

I am pleased with their service and quality. I would definitely recommend this company to my family and friends.

Jay★★★★★2 years ago

Awesome customer service and they do a great job I would recommend this company to anyone..

Cristopher Smith★★★★★2 years ago

These guys are fantastic. Very good with communication and always on time. Thanks guys your the best!

Precision Spray Foam Insulation Seattle

Specialist

Direct: 2063395565

5
6 Google reviews

Recent Reviews:

Latoushe★★★★★3 months ago

Heck I don't know phone placed wrong.

Nickolas Anthony★★★★★3 years ago

These guys are great. Very impressed with the work they did and their customer service and prices were top notch. Would definitely hire them again if I ever need work done again.

Dewayne goodman★★★★★2 years ago

They provided superb service. The price was very reasonable considering the work they did, and I am very particular! Thanks again!

Washington RetroFoam

🏆Certified Pro

Direct: 4255200043

4.9
83 Google reviews

Recent Reviews:

Steve C★★★★★in the last week

They did a great job insulating my home. They were professional and quick. The owner was able to get us instant rebates for having no prior insulation, making the cost much more affordable. Great experience and I recommend them to anyone

Jessica Kinman★★★★★2 weeks ago

I was traveling and my daughter’s room and bathroom were freezing and we couldn’t figure out why so I reached out to see if this could help. Neil and his team came out right away, their communication was great especially with me traveling and not available onsite, he sent photos and we found out there was no insulation around her room. Highly recommend him and his team!

Tim Davis★★★★★in the last week

I meet this company at a local trade show and was impressed by their straightforward presentation. Upgrading my in-wall insulation was on my project list, and their method is quick, effective, easy, and leaves virtually no indication that work has been done. They came out at 8:00 AM and were finished and cleaned up at 2:00 PM. I have horizontal siding and was worried because the boards are old and brittle, but no damage occurred. The cleanup left the area pristine too! The crew was focused, effecient, and clearly interested in giving me the best possible outcome. Well done Washington RetroFoam!

Super Attic Solutions

Direct: 8006744933

4.9
157 Google reviews

Recent Reviews:

Zuke C.★★★★★5 months ago

Tom was very friendly and straightforward with the inspection, detailed the problems, replacing procedure, and warranties. The decision was made fast with a reasonable cost. 5 stars rate to him. Ronny and his crew are a fantastic hardworking team! They carefully setup their working environments to keep around clean. Then removed all the old insulation, laying up the new ones. When I realized the very small area need to be fixed, upon very tight schedule, Ronny’s crew came back fixed nicely. Yes, Rate Ronny and his crews all 5 stars. The company office has a super service lady Lorrie. She sent the before and after photos, make an inspection schedule, helped the fixed problems… She is friendly, patient, and quickly to resolve the problems! Definitely, Rate her 5 stars. The inspector, Jose, was done a good job and help to resolve our small area problem, Rate him 5 stars too. By my experience, I’m satisfied with this company with good leaders and hard-working teams. I would rate it 5 stars and recommend it to my friends.

W J★★★★★5 months ago

At some point over the winter, rats got under our house and shredded everything in their path. I got several bids for the work, not only did Super Attic Solutions offer the best price but they also offered better quality materials for the project, going with them was a no-brainer. Joey who did the appraisal was professional, polite and knew his stuff, joy to work with. They got me scheduled within a week and I got Ricky as my project manager. I’ll say they knocked it out of the park, the crew busted their butts all day and the end result was day and night. The transformation was mind blowing I had no idea how bad the damage was until Ricky and his crew were finished. Our house was built in the 40’s now we have a crawl space and insulation comparable to a new build! Super happy with the results from Ricky’s crew, their professionalism and hard work did not go unnoticed. I highly recommend this company for any insulation-related project. If you get Ricky as the project manager, rest assured the end results are well worth every penny! The company as a whole made this nightmare situation seem manageable and I really appreciate the work! Few Before and after photos below, mind-blown!

Aylin Perdomo★★★★★in the last week

This company took care of our attic reinsulation, duct replacement, and rodent infestation all at once. The crew was extremely competent, neat, and on time. A special thank you to Tomer for his exceptional work on the rodent proofing; his thoroughness gave us great peace of mind. The entire process was smooth, and the improvement in our home's air quality and temperature is remarkable. A fantastic job from beginning to end!

Empire Spray Foam Insulation Everett

🏆Certified Pro

Direct: 4259709017

4.8
39 Google reviews

Recent Reviews:

Melissa★★★★★2 years ago

I haven’t used the company but applied for a job with them, and despite not being who they were looking for, they replied quickly, and were very friendly and courteous. After my conversation with them, I would definitely look to them for services because I have NOT found any company in Wa state with such an amazing response time and respect despite my being of no use to the company. If you want to be respected during your conversation, definitely give them a call.

Jenny Duke★★★★★2 years ago

Very friendly staff. Clean store, very helpful when I had no idea what I needed for the job they knew exactly what to do and all at a very reasonable price. If you want the job done right this is the place to go. Thanks so much!

Alonso Casillas★★★★★2 years ago

Very professional and constant friendly staff and best prices after looking around online half a day I have already recommended to fam and friends looking for this service "HIGHLY RECOMMENDED"

Specialty Insulation NW, LLC

Direct: 4258984390

4.4
7 Google reviews

Recent Reviews:

John Brooke★★★★★3 weeks ago

Specialty Insulation NW did a great job on my project. From my initial contact with Corey, to the installation team, everyone was a pleasure to work with. I almost didn't call these guys because I thought they did only foam. They do all kinds of Insulation. They used mineral wool and fiberglass on my project. Francisco and the other installers were all friendly and patiently answered any questions. I had spoken to other companies for quotes, but no one impressed me like Specialty Insulation NW. They were not my cheapest bid, but i am so glad I used them. They know their product well, can answer all your questions, respond promptly to questions, and have some of the best customer service I have experienced in the construction field.

Mason Koivisto★★★★★a year ago

Thank you Specialty Insulation NW, LLC for helping insulate this shed that we’re turning into an outdoor kitchen. The crew was punctual, clean and did great work! Corey and the Pam were easy to work with and communicated well throughout the process. I think the spray foam is a great way to go when insulating a structure and this is the company I would recommend to do it!

Theresa Trinka Hoard★★★★★2 months ago

We had to get our crawl space cleaned and replace the old insulation with new. It took two days. I didn't know it would scare my one dog so much on the first day. On the second day I explained my situation to one of the installers Ramiro. He bent over backwards to help reduce the noise by keeping the compressor on the side of the house where my dogs weren't staying, outside. That was a big help and they really did their very best to keep the noise down while doing a great job.

Total Spray Foam Insulation Tacoma

Specialist

Direct: 2537931890

4.2
5 Google reviews

Recent Reviews:

A jar of fat Lard★★★★★2 years ago

I've been talking to the owner a bit, and so far, they have been extremely friendly, and punctual. I would trust these people to do an outstanding job.

A Reeves★★★★★2 years ago

They did an excellent job. Always on time, completed the job early. Very professional and prices below competitors. I will use again.

Jose Buck★★★★★3 years ago

Great company to work with. Their work ethics and quality of work is worth the while. Also, excellent with communication. Communication is key to a great business relationship.

Frequently Asked Questions — Spray Foam Insulation in Seattle

Below are common questions Seattle, WA homeowners ask about spray foam insulation cost, types, and installation. For local pricing and to compare verified contractors in Seattle, browse the listings above.

How much can spray foam insulation save on heating and cooling bills in Seattle?
Homeowners in mixed climates like Seattle, WA typically see 20–30% reductions in total energy costs after spray foam installation. The savings come from both reduced heating in winter and reduced cooling in summer. The exact savings depend on your home's current insulation, size, and local energy rates, but most homeowners recoup the investment within 3–6 years.
Is spray foam better than fiberglass insulation for homes in Seattle?
For most homes in Seattle, WA, spray foam outperforms fiberglass significantly. Fiberglass batts insulate but do not air seal — meaning conditioned air still escapes through gaps. Spray foam both insulates and creates an airtight seal, addressing the root cause of energy loss. While spray foam costs more upfront, the performance difference in mixed climates makes it the better long-term investment for most homeowners.
Is spray foam insulation worth the cost?
For most homeowners, yes. Spray foam creates an air-tight seal that traditional insulation cannot match, reducing energy bills by 15–35% annually. It also adds structural rigidity, acts as a moisture and vapor barrier, reduces outside noise, and can increase home resale value. The higher upfront cost compared to fiberglass is typically recovered within 3–7 years. One important note: because spray foam creates a very tight building envelope, proper mechanical ventilation is important to maintain healthy indoor air quality and prevent interior moisture buildup. This is typically handled by an Energy Recovery Ventilator (ERV) — a system that brings fresh outside air in while pushing stale air out, recovering the energy from the outgoing air so you don't waste what you paid to heat or cool — or a Heat Recovery Ventilator (HRV), which works similarly but is optimized for cold climates. A qualified contractor will assess whether your home needs ventilation upgrades as part of the installation.
How much does spray foam insulation cost in Seattle, WA?
In Seattle, WA and the surrounding area, spray foam insulation typically costs $1.00–$3.00 per square foot installed, depending on the type and your home's specifics. Open-cell foam runs $0.44–$0.65 per board foot, while closed-cell foam costs $1.00–$2.00 per board foot. A typical 2,000 sq ft home attic in Seattle costs $2,000–$6,000. Most Seattle homeowners recoup this investment within 3–7 years through energy savings of 15–35% annually.
What is the difference between open-cell and closed-cell spray foam?
Open-cell spray foam is softer, less dense, and less expensive. It expands significantly and is ideal for interior walls, attics, and soundproofing. Closed-cell spray foam is denser, stronger, and provides a moisture barrier — making it better for exterior applications, crawl spaces, and areas prone to flooding or humidity. Closed-cell also has a higher R-value per inch (R-6 to R-7 vs R-3.5 to R-4 for open-cell). One key difference: open-cell foam allows some vapor movement, while closed-cell acts as a vapor barrier — an important consideration for your home's ventilation needs.
How long does spray foam insulation last?
Spray foam insulation is one of the most durable insulation options available, with a lifespan of 80+ years when properly installed. Unlike fiberglass batting which can sag and settle over time, spray foam maintains its shape and insulating properties indefinitely. It will typically outlast the building it is installed in.
How do I find a qualified spray foam insulation contractor in Seattle, WA?
When searching for a spray foam contractor in Seattle, WA, look for ones who are licensed, insured, and have verifiable reviews. Spray foam requires specialized equipment and training — improper installation can cause off-gassing, adhesion failure, or fire hazards. Ask for references, verify their insurance, and get at least 2–3 quotes. A qualified Seattle contractor will also assess your home's ventilation needs — a tightly sealed spray foam installation requires adequate mechanical ventilation to prevent moisture and indoor air quality issues. FoamMatch pre-screens all listed contractors in Seattle for licensing and insurance so you can compare verified professionals in your area.
How long does spray foam installation take?
Most residential spray foam jobs take 1–2 days depending on the size of the area. A standard attic takes 4–8 hours. After spraying, the foam cures within 24 hours, though most contractors recommend waiting 24–72 hours before occupying the space due to off-gassing during the curing process.
Does spray foam insulation need to be replaced?
No — spray foam insulation does not need to be replaced under normal circumstances. Unlike fiberglass insulation which degrades over time, spray foam maintains its R-value and air sealing properties for the life of the building. The only reasons to remove or replace spray foam are water damage, renovation work, or improper original installation.