Insulation in Boise, ID - free quotes from local pros
Get free insulation quotes from local contractors in Boise, ID. Compare prices for blown-in, spray foam, and fiberglass insulation projects.
Boise and the Treasure Valley experience a continental climate with wide temperature swings. January lows average in the low 20s, while July highs regularly exceed 100 degrees. Homes that lack adequate insulation struggle in both extremes, driving up energy costs and making rooms uncomfortable.
Whether you are insulating a newly built home in Meridian, upgrading an older Boise bench home, or sealing a crawl space in Nampa, finding a qualified insulation contractor is the first step. We match Boise-area homeowners with insulation professionals who deliver quality work.
The average Boise insulation project costs $1,300 to $7,000. Get free quotes from local contractors to find the best price for your project.
Insulation costs in Boise
The Boise metro area’s lower cost of living translates to insulation prices that run about 5% to 10% below national averages. Here is what Treasure Valley homeowners typically pay.
| Project type | Low | Average | High |
|---|---|---|---|
| Blown-in attic (per sq ft) | $0.85 | $1.55 | $2.25 |
| Spray foam, closed-cell (per sq ft) | $1.35 | $2.25 | $3.20 |
| Spray foam, open-cell (per sq ft) | $0.65 | $1.10 | $1.80 |
| Fiberglass batts (per sq ft) | $0.45 | $0.85 | $1.35 |
| Whole-home insulation | $1,300 | $3,000 | $7,000 |
What affects costs in Boise
Factors that influence insulation pricing in the Boise market:
- Home age. The Treasure Valley has a mix of older Boise bench homes from the 1950s-70s and newer construction in Meridian, Eagle, and Star. Older homes often need more insulation and may require removal of existing material first.
- Crawl space conditions. Many Boise-area homes have crawl spaces rather than full basements. Crawl space insulation and encapsulation cost more than straightforward attic work but deliver significant comfort improvements.
- Insulation type. Blown-in is the most popular and affordable option for Boise attic upgrades. Spray foam is preferred for crawl spaces and air sealing.
- Home size. The average Boise home is roughly 1,800 square feet. Larger homes in Eagle or the foothills will cost more to insulate.
How it works
Getting insulation quotes in Boise is simple:
- Describe your project. Share details about your home, the areas needing insulation, and when you want the work done.
- Get matched with local pros. We connect you with up to three insulation contractors serving the Boise metro area.
- Compare quotes and hire. Review estimates side by side, ask questions, and choose the best contractor for your project.
No cost, no obligation. Compare your options and decide when you are ready.
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What to look for in a Boise insulation contractor
Licensing and registration
Idaho requires contractors to register with the Idaho Contractors Board for projects valued at $2,000 or more. While Idaho does not have a specialty insulation license, registered contractors must carry general liability insurance.
Verify your contractor’s registration through the Idaho Contractors Board website. Confirm they carry current insurance and workers’ compensation coverage.
Insurance and bonding
Your contractor should provide certificates of insurance for general liability and workers’ compensation before starting work. This protects you from liability if a worker is injured on your property or if the work causes damage.
Questions to ask
Before hiring a Boise insulation contractor, ask:
- Are you registered with the Idaho Contractors Board?
- Do you carry liability insurance and workers’ compensation?
- How many insulation projects have you completed in the Boise area?
- What insulation type do you recommend for my home and climate?
- What warranty do you provide on materials and labor?
- Can you provide references from recent local projects?
Boise climate and insulation needs
Boise sits in IECC Climate Zone 5 with cold winters and hot, dry summers. The recommended insulation levels for this zone are:
- Attic: R-49
- Walls: R-20
- Floors/crawl spaces: R-30
- Basement walls: R-15
The Treasure Valley’s semi-arid climate means moisture is less of a concern than in coastal or southern states, but homes with dirt-floor crawl spaces should address moisture barriers before insulating. Ground moisture can reduce insulation effectiveness and lead to mold growth.
Boise’s intense summer heat makes attic insulation particularly valuable. A well-insulated attic keeps your upper floors cooler and reduces air conditioning costs during July and August when temperatures regularly top 100 degrees.
Insulation resources
Learn more about insulation options for your Boise home:
- Blown-in insulation cost guide - Detailed pricing for the most popular attic insulation option
- Attic insulation guide - Compare materials and find the right R-value
- Spray foam vs. fiberglass - Side-by-side comparison of performance and cost
- Wall insulation retrofit guide - How to add insulation to existing walls
- R-value guide - Recommended R-values by climate zone
- How to choose an insulation contractor - Evaluation checklist and red flags
Browse all insulation services in Idaho or visit our insulation resource center.
Related services in Boise
Looking for other home improvement contractors in the Boise area? We also connect homeowners with:
Many Boise homeowners tackle multiple outdoor projects during the spring and summer construction season.
How to get insulation quotes in Boise
Describe your project
Tell us the details of your insulation project.
Get matched with local pros
We connect you with contractors in Boise.
Compare quotes and hire
Review your options and choose the best pro for the job.
Get free insulation quotes in Boise
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