Spray Foam Insulation in Caldwell, ID

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

Compare 7 verified spray foam insulation contractors serving Caldwell, Idaho, backed by 264 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 Caldwell 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 Caldwell

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 Caldwell

5⭐
8 Google reviews

Recent Reviews:

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!

cstam105★★★★★7 years ago

Eco Green is highly recommended. They suggested options to help save $ on my power bill, let me know exactly what they were going to do as far as the work that needed to be done, were personable, and priced fair! Would recommend to anyone! Thanks!

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!

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:

Claire Imaye★★★★★11 years ago

In 2004, I purchased a brand new house. I couldn't understand why the master bedroom and bath was like walking into a freezer in the winter and an oven in the summer. At the recommendation of a friend, I asked Mark Kramer with Acme Insulation investigate. Mark said that he needed to get into attic crawl space above these rooms. He did that by going into the garage and crawling over only to find that access to these room was blocked by wooden boards. After removing the boards, he discovered that there was absolutely NO insulation! My builder's insulation company didn't even bother to remove these boards to do any insulation. I was furious. My one year warranty was up and I had no recourse to go after them. I found out the the insulation company my builder used is Marv's, who has been around for many years. It is apparent Marv's does NOT inspect the work their employees do because how can you miss not insulating a whole master bedroom, bathroom and closet???? Mark was shocked that my pipes did not burst. Acme insulators were professional and courteous. They made sure to clean up after themselves, which I greatly appreciated. Mark also followed up after to make sure the work was done correctly and to my satisfaction. The best news is that my heating and cooling bills have gone down substantially. It is amazing to not have to have a portable heater in the winter and fans in the summer. I can't believe I lived with this for 4 years before calling for help. You will not be disappointed with the work Mark and Acme Insulation will do for you. You will be VERY unhappy if you use any other insulator. I've recommended Acme to everyone I know. A friend who used Acme at my suggestion experienced a 30% decrease in her electric bill. She was amazed and thrilled. You will be too.

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!

Erica Gammaitoni★★★★★8 years ago

I called Acme Insulation after a very frustrating conversation with a different company in the Boise area. I instantly liked his warm and down-to-earth personality. He did not treat me like I was stupid-he listened to everything I had to say and answered all of my questions. He came out to our place to give us a quote and did a thorough inspection of our whole attic. He took a lot of measurements, made notes, and even took a few pictures. We had a lot going on in our older home we purchased two years ago.... and we knew this would not be an easy job like others. Mark was honest and up-front, giving us great input and suggedtions on our options, and what he would do. His crew was out to our house on time, exactly when Mark said they'd be, and worked their butts off. I don't think I ever saw any of them take a break! They truly busted a move on our attic job which took a good full three days! We had to have other work done in between those three days and everything worked out perfectly! The crew who came out here to work on each day cleaned up after themselves so that I never knew they were ever here! Here is what we had done: -Relocate attic access -insulate and sheetrock old access -remove all old insulation in attic -seal up all openings like lights & fans -wrap, seal all duct work -blow in new insulation We basically had no insulation, and what was there had gotten wet @ some point and stuck to the floor, or was in a few little piles. Our heating/cooling is in the form of a gigantic roof mounted HVAC unit we lovingly refer to as Chernobyl :) It sits into out attic making it extremely difficult to move around in, let alone try to clean out and fill up with new insulation. But our job was completed by Acme Insulation in a timely manor, with great attention to detail, and most amazingly at the exact price quoted to me by Mark the day he came and looked! Even though it took an extra day to scrape out all of that old insulation that no one really knew was in there! If you are looking for an honest and reliable company for your home insulation needs I highly recommend Acme Insulation! Mark does a great job, and the down-to-earth feel of this company really eased my fears of being ripped off that some of the big "chain" style companies made me feel! We had three different companies come out and bid our job-so we really did experience a difference. With our high summer temperatures this year our house has stayed amazingly cool and our power bill-which we are all electric-has been $50-100 less each month....no joke! Great job Acme!! And thanks!

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!

Frequently Asked Questions — Spray Foam Insulation in Caldwell

These are the questions Caldwell 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 7 verified Caldwell contractors above for exact quotes.

Why is spray foam insulation especially important in cold climates like Caldwell?▼
In cold climates like Caldwell, 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 Caldwell?▼
Yes — spray foam insulation is one of the most effective solutions for preventing ice dams in cold climates like Caldwell, 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 Caldwell?▼
For cold climates like Caldwell, 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 Caldwell, ID?▼
In Caldwell, 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 Caldwell costs $2,000–$6,000. Most Caldwell 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 Caldwell, ID?▼
When searching for a spray foam contractor in Caldwell, 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 Caldwell 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 Caldwell 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 Caldwell, ID

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