Spray Foam Insulation in Renton, WA

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

💰 Estimated Energy Savings in Renton

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 Renton

Kent Insulation Solutions

Direct: 4253074773

5
6 Google reviews

Recent Reviews:

Holly Abair★★★★★a year ago

I recently had the pleasure of hiring Kent Insulation Solutions for a comprehensive insulation service, and I am absolutely thrilled with the results. From start to finish, their professionalism, expertise, and attention to detail truly exceeded my expectations. The installation crew was punctual, courteous, and efficient. They worked diligently to insulate every nook and cranny of my home, demonstrating a high level of skill and precision. I was particularly impressed with their commitment to cleanliness; they left my home spotless, and you could hardly tell they had been there. My home feels consistently comfortable, and I've already seen a reduction in my energy bills. I wholeheartedly recommend them to anyone in need of insulation services. The level of expertise, attention to detail, and overall customer experience make them the top choice for insulation solutions. My home is now more comfortable and energy-efficient, thanks to their exceptional work!

Food 4 Thought★★★★★a year ago

Outstanding Insulation Excellence! I recently engaged Kent Insulation Solutions for a comprehensive insulation service, and I'm thrilled to share my exceptional experience. Throughout the entire process, from the initial consultation to the project's completion, they showcased an impressive level of professionalism, expertise, and meticulous attention to detail. The installation team not only arrived promptly but also demonstrated remarkable courtesy and efficiency. Their skill and precision in insulating every corner of my home were truly commendable. What truly set them apart was their unwavering commitment to cleanliness – my home was left immaculate, and it was almost impossible to tell they had been there. Post-insulation, my home has maintained a consistently comfortable temperature, and I've already witnessed a noticeable drop in my energy bills. Kent Insulation Solutions has undoubtedly established itself as the premier choice for those seeking top-tier insulation services. I wholeheartedly endorse Kent Insulation Solutions for their unmatched expertise, meticulous approach, and outstanding customer experience. Thanks to their stellar work, my home is now both exceptionally comfortable and energy-efficient. A definite five-star recommendation!

Bradley “B RAD DIZZLE” Marshall★★★★★2 years ago

I was truly amazed at the level of professionalisn Kent Insulation Solutions presented day one of our remodel. At first I was nervous about the size of the project on my property, but once I met the team of specialists; every bit of worry was gone when I saw the level of care, and pride they put into getting our home insulated for this coming winter. What a great experience, and thank goodness they're the best in my opinion across the board for keeping my house warm this Winter. Thanks again guys! I look forward to working with you guys on our Lake house this spring!

COP Attic Insulation & Roofing Services Renton ,WA

Direct: 2533388298

5
6 Google reviews

Recent Reviews:

Saminu Mohammad★★★★★3 weeks ago

I heartily endorse Renton, Washington's COP Attic Insulation & Roofing Services. The installation of foam and reflective insulation in our attic was expertly completed by Ben and his crew. Our roof was secure and long-lasting thanks to their meticulous and timely roofing services. Our home's comfort and energy costs have already significantly improved thanks to the insulation. Ben's expertise and meticulousness were outstanding. The greatest option in Renton for dependable roofing and attic insulation is COP Attic Insulation & Roofing Services. Really trustworthy and professional!

Mujeebat Horlabisi★★★★★4 months ago

With COP Attic Insulation & Roofing Services in Renton, Washington, we are quite happy. They were really honest, informed, and professional. Even the city inspector expressed his admiration for their job. For any of your roofing requirements, we strongly advise working with Cool Roofing, and They also insulate the attic services.

Caroline Perez★★★★★3 months ago

A trustworthy and dependable team, COP Attic Insulation & Roofing Services Renton ,WA delivered exceptional attic insulation and roofing service! Their attic insulation and roofing services were completed with professionalism and care, the gas fireplace was thoroughly cleaned and left spotless, and the chimney creosote removal and cap cleaning were handled safely and effectively.

Spray Foam NW, LLC

Specialist

Direct: 3609427847

5
1 Google reviews

Recent Reviews:

Makayla Landrum★★★★★3 years ago

Sprayfoam NW did an amazing job insulating our old house! Aaragon is a fast and hard worker and I highly recommend this company!

INSULATION PRO INC

Direct: 2062060090

4.9
37 Google reviews

Recent Reviews:

ahmad naibkhil★★★★★7 months ago

I had a fantastic experience with Insulation Pro Inc for my attic insulation project. From start to finish, everything was handled with professionalism and care. Sam, in particular, was outstanding. He was not only incredibly knowledgeable but also took the time to walk me through the entire process, answering all of my questions with patience and clarity. He made sure I understood the benefits of the insulation being installed and what to expect. On the day of the installation, Sam and his team arrived on time and worked efficiently while being respectful of my home. They prepped the area carefully, completed the job quickly, and left everything spotless once they were done. I was especially impressed with their attention to detail and how thorough they were in making sure every corner of the attic was properly insulated. Since the insulation was installed, I’ve already noticed a big improvement in the comfort level of my home, especially with temperature regulation. It’s clear that they used high-quality materials and took pride in their work. If you’re looking for a trustworthy, reliable company for your insulation needs, I highly recommend Insulation Pro Inc—and definitely ask for Sam! He truly made the entire experience stress-free and delivered results that exceeded my expectations.

Lauren Setzer★★★★★a month ago

This team was incredible! After multiple quotes, we ended up choosing this team because of their pricing, transparency, and attention to detail. Eric and Omid did not use any pushy sales tactics or try to give us silly customer discounts. They provided honest assessments and gave rationale answers for the problems in our home. We ended up getting all new insulation in our attic and crawlspace and mold remediation as needed. While assessing the crawlspace and completing that part of the project, they found issues with our sump pump and drain system in the crawl space which needed addressed to fix the moisture issue. The team was so efficient and conscientious in all their time within our home. We felt safe having their team working at our home while we were at work and appreciated all the real time updates Eric provided us with. They were extremely accommodating of our needs and requests, and even respectfully and graciously appreciated the feedback we offered them during one project roadblock. Would recommend this team to everybody needing work done! Thank you so much! 🙏🏼

Mario Rodriguez★★★★★a week ago

I recently hired INSULATION PRO and I'm very satisfied with the work they did. They have a great team and I highly recommend them!

Western Insulation Services

Direct: 2534866585

4.8
18 Google reviews

Recent Reviews:

Justin Baker (rpgking111)★★★★★a month ago

The owner, Pedro, was very responsive and patiently answered all of my questions. The quote was fair, and his crew was available to get started the next day. They cleaned out, sanitized, sealed, and insulated my crawl space and attic in 2 days. (1500 sqft, 1 story house, built 1968). My crawl space and attic are difficult to access and navigate, but the crew slipped in and out like pros! I inspected the crew's work after both days and the work was clean and sharp!

Sam Gardner★★★★★a year ago

The owner was very responsive. His crew showed up on time and performed all services excellently. They left the job site in pristine condition. Highly recommend western insulation for any insulation needs.

Tarena S★★★★★3 years ago

Christian and his team did a great job. He was fairly priced, came in with a good size crew to replace all of the insulation for our ducts under the house. I would definitely call them again.

Capital City Spray Foam of Olympia

Specialist

Direct: 3603008500

4.7
13 Google reviews

Recent Reviews:

Ruben Benavidez★★★★★10 months ago

These guys are very courteous. In a time where customer service is almost non existent Capital City spray foam customer service was top notch, very professional. And it continued with the techs. They came to spray my house,super professional and answered any questions I had. I highly recommend these guys!

Leigh Anne Jollie★★★★★6 months ago

I reviewed their website and called for more information. The service representative was super friendly and helpful.

Charli Da'Bomb★★★★★a year ago

If ever I am in need of such services in Olympia area, they will always be my very first choice. Very professional and best grade in quality of work and materials.

Frequently Asked Questions — Spray Foam Insulation in Renton

How much can spray foam insulation save on heating and cooling bills in Renton?
Homeowners in mixed climates like Renton, 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 Renton?
For most homes in Renton, 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?
Spray foam insulation typically costs $1.00–$3.00 per square foot installed, depending on the type and your location. 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 costs $2,000–$6,000. Most 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?
Look for contractors 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 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 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.