Spray Foam Insulation in Boise, ID

Find top-rated spray foam contractors and save up to 37% on energy bills

Compare 11 verified spray foam insulation contractors serving Boise, Idaho, backed by 329 customer reviews averaging 4.8★. Whether you're insulating a new build, retrofitting an existing home, or upgrading attic and crawl-space insulation, these pre-screened Boise contractors handle both open-cell and closed-cell spray foam. Homeowners here typically cut energy bills by around 37% — get free quotes and read verified reviews below.

💰 Estimated Energy Savings in Boise

37%
Average Energy Savings
Typical range: 32% - 42%
$1,732
Estimated Annual Savings
Based on $390/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 Very Cold.

Verified Contractors in Boise

Direct: (208) 980-2074

5⭐
1 Google reviews

Recent Reviews:

Mary Ballard★★★★★2 years ago

With Green Peak Spray Foam, you're guaranteed an unforgettable experience. Their commitment and passion for each project are unrivaled - from tiny tasks to big dreams, they deliver excellence every time! With their five-star reputation standing tall above the rest, this team is truly one of a kind; highly recommended by yours truly - don't miss out on some incredible results that'll surprise in all the right ways!

iFOAM Insulation of Boise

🏆Certified Pro

Direct: (208) 423-1964

5⭐
48 Google reviews

Recent Reviews:

Derek G★★★★★2 months ago

IMO, adding insulation to the attic space is the best value for maintaining a comfortable temperature year-round. I hired iFOAM to add 8 inches of blow-in insulation, raising the R-value from R38 to R60. The two-man team was professional, addressed all of my concerns, and did a decent job of cleaning up after the install. Plus, the price was reasonable after calling in four other insulation companies for quotes.

Terri Smith★★★★★2 years ago

Steve and his crew were flexible and accommodating when our project schedule was pushed back. They came through for us on our commercial project when we needed them. They did good work and we will definitely use them again when we have another project in Idaho.

Nancy Kuba★★★★★a year ago

iFoam is a great company to work with. Zach had excellent communication throughout the entire process, was very informative and detailed oriented. Great quality work completed in a timely manner, I couldn't ask for a better experience. I highly recommend iFoam Boise for any of your insulation needs!

5⭐
44 Google reviews

Recent Reviews:

Michelle Wood★★★★★3 months ago

Roger was wonderful. Excellent job on our spray foam insulation. Great attention to detail. We have a decorative beam running through our home that I forgot to mention. Before I remember, Poly Seal was calling me to see if it gets sprayed or not. They taped off everything before spraying. They cleaned up afterwards. I'm very grateful for all the help. They are the best!

will dyche★★★★★4 months ago

Are there more stars I can give? These guys did a great job with our spray foam insulation. I kept asking for more areas and tougher places to work in. Not only that but our job site wasn’t ideal. They had to do a lot of work moving and covering things for us. They went above and beyond for us. We also kept moving around the timeline. I’d say we were a nightmare customer but they stuck with us and did great work. Pricing was reasonable as well. Thanks guys!

Van Povey★★★★★a year ago

Thank you Kyle Perkins for exceptional customer service. Not only did he help us find the right product for our application but he also find us the most cost effective product without sending us to the cleaners. Poly insulation is the way of the future!

Recent Reviews:

Alondra Barajas★★★★★10 months ago

Steve Dayton★★★★★5 months ago

Great group of people and willing to help whatever needs you may have. Customer service exceeded my expectations!

5⭐
8 Google reviews

Recent Reviews:

Zack Pappuleas★★★★★4 years ago

Tevis and Melissa helped my family and I with the insulation of our new home and they did outstanding work! Extremely happy with the customer service, the product and the results. Definitely use Eco Green!

Lee M★★★★★5 years ago

Tevis and Melissa came out to my shop to put insulation in the attic. It turned out good, nice and level. Tevis even helped me out with the baffles. They are really great, hard working people. Highly recommend. Thanks Eco Green!

Hannah Grinestaff★★★★★4 years ago

Eco Green brought our attic insulation up to code. They were great at answering all the questions I had, and easy to get ahold of. The pricing was great, too!

5⭐
54 Google reviews

Recent Reviews:

Kevin M★★★★★4 weeks ago

I’ve been working with Bronco Insulation for about a year now, and these guys are the real deal. Every job they do is clean, organized, and done right. You can tell they take pride in their work just by looking at the quality of their installs. Ben and Trevor are the main guys making it happen, and I can’t recommend them enough. If you need insulation work done the right way and on time, get ahold of them ,you won’t be disappointed.

Patrick Salmon★★★★★a month ago

I met Ben at the Nampa home show, we setup a date/time for a quote to install insulation above my garage (Seems to be a common issue here in the valley). We agreed upon a price which was very reasonable. Ben and his team showed up on time and was very professional! I'm extremely impressed by how transparent Ben was with the process and explaining all the details involved with garage/attic insulation. Thank you and 5 stars!

Rodney Morse★★★★★4 months ago

They came out to do a quote to do insulation in my attic above my garages. Ben was very knowledgeable and appreciative for my needs. They came out and did the work three days later. My garage is now 10-15 degrees cooler and now in enjoyable even in the heat of the day. Thanks Bronco Insulation Company. Highly recommend!!! Will explain the process, what to expect and then will show you what they did. Great job guys!!!

4.9⭐
60 Google reviews

Recent Reviews:

Greg Armstrong (John Day Nazarene)★★★★★4 months ago

The group at Idaho Insulation did a fast and quality job on our insulation project. Cleaned up well, couldn’t even tell they had been there until I poked my head up in the attic. I would recommend giving them a call.

Melody Filonczuk★★★★★4 weeks ago

They did an excellent job and gave us a wonderful deal to afford it. The work needed was completed in short time ( once access was granted), and was very impressive. Would highly recommend!

David Welch★★★★★4 months ago

Brandon from Idaho Insulation did a good job of explaining my options. His crew was very responsive and did a professional job of installing additional attic insulation for my house. I would definitely recommend this company to anyone.

4.8⭐
17 Google reviews

Recent Reviews:

Steven White★★★★★5 months ago

Was planning on insulating our new build myself until a friend recommended Acme. Couldn't be happier - got the 500sq ft mother in law unit insulated in 3 hours, did a great job at a very fair price.

DL Nikodym★★★★★5 months ago

After a hearty recommendation from a neighbor, I had Acme out for an estimate to update my new home's insulation, insulate the attached garage and advise regarding second story summer heat issues. Come to find out I had some complications/accommodations in the attic secondary to zero lot line fire code. Mark spent quite a bit of time exploring the house/attic layouts and ventilation. He devised a plan to address my heat issues, promptly sent out his wonderful crew to install and followed up with me regarding my satisfaction. I found the process logical, efficient and tidy. I am looking forward to observing the impact on second story summer heat and will add to this review at that time. Meantime, first winter has been cozy with very reasonable heating bills. Many thanks to Acme for a very pleasant experience. UPDATE: New insulation in house and garage has had a significantly positive effect on both first and second story summer heat reduction. Very pleased!

InterMountain Auto Glass★★★★★5 years ago

Mark at ACME insulation was great to work with for my commercial project. From start to finish he was helpful in explaining the most cost effective way to complete my job in a very professional and quality manner. They were very timely in coordinating with all of my other contractors to ensure that my whole job gets done efficiently. Thanks for the hard work Mark!

4.8⭐
56 Google reviews

Recent Reviews:

Michael Pierce★★★★★a month ago

Good people. I've been delivering products to this location for a couple of years. Always a fantastic time. Great employees who seem energetic and happy. Marv is the best!! He is always friendly, and he genuinely cares about people. It shows in everything they do. I give them 10 stars, and I recommend them for your insulation needs.

bailey ward★★★★★4 months ago

Mr. Russ Ward helped me so much and made my experience here at the Marvs insulation wonderful. He helped me with all my needs and aspirations and really helped to make everything come together. Great communication skills and very professional. HIGHLY recommend Russ Ward at the Marvs Insulation:)

jerry uptmor★★★★★4 months ago

These guys are always on time, very hard Working. They keep in contact whether you're the home owner. Or the general of the job, they Keep you informed which makes The job runs smoother and allows you do. Coordinate with other contracting subs To keep your build running smoothly.

4.4⭐
25 Google reviews

Recent Reviews:

Mosese Kaufusi★★★★★a year ago

Super tight area you’d have to head in make a u turn like getting out then make your back up Rosales unloaded my trailer super fast 🫡

Lizabeth Dickson★★★★★4 years ago

Nice people, the dock can be a little tight. Just take your time and be safe! Thanks for being so pleasant!

YF Bear★★★★★3 years ago

Amazing service and follow through!! They communicated well throughout the process and showed up when scheduled. Installers went above and beyond. Trustworthy!

3.6⭐
12 Google reviews

Recent Reviews:

Bryce Jensen★★★★★2 months ago

I am a general contractor and I have used Partner's Insulation on numerous projects. They have always been professional and responsive.

Heidy Caruso★★★★★2 years ago

I cannot more highly recommend Partners Insulation. They insulated a new addition and were incredibly professional and efficient. They left the area cleaner than they found it. We will definitely use them again. 10/10

jeremy young★★★★★3 years ago

I used Partners Insulation to insulate my garage attic, and let me tell you, it was great experience from start to finish! Victor with sales was timely, and accommodating, in helping set up an appointment...not to mention, I received a quote same day. On the day of installation, Abraham and team showed up on time and got right to work. After they finished, he explained everything that was done...and before they left, they cleaned up after themselves. If you have any insulation needs, I would highly recommend using them 👍

Frequently Asked Questions — Spray Foam Insulation in Boise

These are the questions Boise homeowners ask most about spray foam cost, R-value, and open- vs. closed-cell foam — with context for local pricing and roughly 37% typical energy savings. Compare the 11 verified Boise contractors above for exact quotes.

Why is spray foam insulation especially important in cold climates like Boise?▼
In cold climates like Boise, ID, proper insulation is critical to preventing heat loss, ice dams, and frozen pipes. Spray foam's air-sealing properties stop the cold air infiltration that traditional insulation cannot address. It also prevents the moisture buildup inside walls that leads to mold in cold-weather freeze-thaw cycles. Homeowners in ID typically save 25–35% on heating costs. Note: in tightly sealed homes, proper mechanical ventilation is commonly recommended to maintain fresh air exchange without losing the heat you've paid for.
Does spray foam insulation prevent ice dams in Boise?▼
Yes — spray foam insulation is one of the most effective solutions for preventing ice dams in cold climates like Boise, ID. Ice dams form when heat escapes through a poorly insulated attic, melting snow that refreezes at the eaves. By creating an air-tight thermal barrier in the attic, spray foam eliminates the heat loss that causes ice dams in the first place.
What R-value do I need for spray foam insulation in Boise?▼
For cold climates like Boise, ID, the Department of Energy recommends attic insulation of R-49 to R-60. Closed-cell spray foam provides R-6 to R-7 per inch, meaning 8–10 inches achieves code-minimum performance. Open-cell foam at R-3.5 per inch requires greater thickness. A local contractor familiar with ID building codes can recommend the exact specification for your home.
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 Boise, ID?▼
In Boise, ID 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 Boise costs $2,000–$6,000. Most Boise 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 Boise, ID?▼
When searching for a spray foam contractor in Boise, ID, 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 Boise 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 Boise 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.

Spray Foam Contractors Near Boise, ID

Not finding the right fit in Boise? Many spray foam contractors travel to nearby towns. These communities within about 60 miles all have verified contractors listed.