Spray Foam Insulation in Nampa, ID

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

Compare 7 verified spray foam insulation contractors serving Nampa, Idaho, backed by 259 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 Nampa 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 Nampa

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 Nampa

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⭐
3 Google reviews

Recent Reviews:

Jonathan Smith★★★★★10 months ago

We use Edgar and Treasure Valley Insulation at my work for everything. always on time and always great work done. I highly recommend them!

Trevor M★★★★★10 months ago

I have worked with Treasure Valley Insulation on many projects over several years. Projects ranging from small repairs to industrial facility capital projects. Edgar is fantastic to work with, responsive and adaptive to our changing requirements, and very price competitive. I highly recommend and look forward to working with him and his crew again.

Earl Mckuin★★★★★10 months ago

Treasure Valley Insulation always executes phenomenal work, great communication, cleanliness and timelines. We've contracted Treasure Valley Insulation for large plant expansions to small projects.

5⭐
54 Google reviews

Recent Reviews:

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!!!

Kevin Mayer★★★★★3 months ago

Outstanding experience from quote to finished project. When getting a quote from them, Ben did a thorough inspection of my attic (unlike a big company that gave me a quote with only quickly peaking into the attic) and went through the various issues and options with no pressure. He was honest and took the time to answer all my questions. Very fair price for the work. It was clear they take pride in their work from start to finish. I was really pleased with the completed work and they put in the extra effort to make sure everything was done right.

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!

Frequently Asked Questions — Spray Foam Insulation in Nampa

These are the questions Nampa 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 Nampa contractors above for exact quotes.

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

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