Insulation contractor in Longmont, CO
Spray foam, blown-in, and batt insulation for Longmont homes and businesses — installed by a local, family-owned crew with 23+ years of experience.
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Why insulation matters in Longmont
Longmont has a large stock of older ranch-style homes, and attic upgrades are among the most common projects we take on here. Decades-old fiberglass batts in these ranch attics have often settled and lost their rated R-value, while gaps around penetrations, top plates, and the attic hatch let conditioned air escape all winter. The result is cold rooms, high heating bills, and ice dam risk during Longmont's snowy stretches. Because Longmont sits in the Efficiency Works service area, many homeowners can offset the cost of an attic retrofit with available rebates. Our process starts with a free inspection: we measure your actual attic R-value, identify thermal bypasses, and recommend the right mix of blown-in cellulose, spray foam, and air sealing for your home. From ranches near Niwot to newer builds out toward Firestone and Frederick, we deliver clean, professional installation with an honest, upfront price.
Rebates: Longmont is in the Efficiency Works area, which frequently offers rebates for attic insulation and air sealing — we'll check current eligibility for you.
Insulation services in Longmont
From attics to crawl spaces, our family-owned crew handles every insulation need across Longmont with commercial-grade equipment and top-tier materials.
Why Longmont homeowners choose Everflow
Family-owned
A local, family-operated crew — never subcontracted.
Licensed & insured
Fully licensed and insured for your protection.
Free estimates
Free on-site inspections and honest, upfront pricing.
Local crew
Based in Fort Collins, we know Northern Colorado homes.
Neighborhoods & towns we serve in Longmont
We insulate homes and businesses throughout Longmont and the surrounding area, including:
Recent projects in Longmont
Real insulation work from our crew across Longmont and the surrounding region.
Attic blown-in cellulose deep thermal fill
Complete air sealing & vapor seal rim joists
Precision wood stud batt insulation installation
Commercial custom ceiling insulation project
What Longmont customers say
"Highly recommend. Best spray foam company I've used. Showed up when they said they would. Did what they said they would. Will be using again."
"Everflow insulated our home in Fort Collins. The temperature difference on our second floor was night and day within 24 hours. Super clean crew and courteous owners!"
"Professional, punctual, and extremely knowledgeable. They explained the difference between closed-cell and open-cell spray foam and saved us a bundle on our garage remodel."
Insulation FAQ for Longmont
Everflow Spray Foam serving Longmont, CO
Family-owned · Commercial-grade equipment · Top-tier materials
Get a free insulation quote in Longmont
Free, no-obligation estimate from your local Longmont, CO insulation experts.