⭐⭐⭐⭐⭐ Trusted by Denver-area homeowners · 150+ insulation projects completed
Insulation Contractors in Northglenn, CO
From the original 1960s Perl-Mack neighborhoods to Northglenn’s townhome communities and newer infill, one certified local crew handles your attic insulation, air sealing, and rodent defense — every job backed by a 100% guarantee.
- Free, itemized estimates
- Financing available
- Most attics done in 1–2 days
- Serving Northglenn, CO and all of Jefferson County
Get Your Free Northglenn Estimate
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1–2 Days
Most Projects Completed
R-49–R-60
Climate Zone 5B Attic Target
150+
Insulation Projects Completed
5 ZIPs
All of Northglenn Covered
- Insured & Certified
- 100% Guarantee
- Free Estimates
- Locally Owned · Commerce City, CO
INSULATION COMPANY ARVADA, CO
Insulation Contractors in Northglenn, CO | Grizzly Insulation
Northglenn was one of America’s first fully planned “instant cities,” built by the Perl-Mack company starting in 1959. Most of its homes are compact 1960s–70s single-family houses and townhomes — modest mid-century construction that was insulated to the minimal standards of its day and has aged well past its prime. There’s little brand-new construction here; the opportunity is bringing an entire generation of homes up to modern efficiency.
Out on the windy north-metro plains near Webster Lake, these older Northglenn homes lose real money through thin attics and leaky ceilings.
Colorado sits in IECC Climate Zone 5B, which calls for R-49 to R-60 in the attic. Many Northglenn attics we inspect measure R-11 to R-19. Grizzly handles every service on this page across 80233, 80234, and 80260.
R-49+
The attic standard Northglenn's climate calls for
TRUSTED PRODUCTS & PARTNERS
The Brands Behind Every Grizzly Install
We don’t install mystery material. Every Northglenn project uses products from the industry’s most trusted manufacturers.
ALL INSULATION SERVICES
All Northglenn Insulation Services, Grizzly
Click any service below for the dedicated Northglenn page with full details, process, and neighborhood context:
Blown-in and batt upgrades to R-49–R-60 — bringing thin 1960s Northglenn attics up from R-11 to R-19. Most attics done in a day.
Closed-cell air-barrier foam for rim joists, additions, and the leaky assemblies of Northglenn’s mid-century homes.
Sealing the ceiling plane against the north-metro wind before insulation — because in a leaky 1960s home, air sealing is where the savings start.
HEPA-filtered removal of old, settled, or rodent-soiled material — clean deck, healthier air, disposal handled, ready for a proper reset.
Moisture-smart crawl space insulation and encapsulation for Northglenn’s older mid-century foundations.
EPA-registered TAP® borate insulation adds thermal performance and rodent deterrence in one install — built for open-space-adjacent Northglenn homes.
Spray foam and fiberglass systems for Northglenn’s retail at the Marketplace and along 104th, offices, and light-industrial space — off-hours, on schedule.
Not Sure What You Need?
Free home assessment across Northglenn. We measure what your home has today and tell you exactly what it needs — no pressure.
WHY LOCAL EXPERTISE MATTERS
Northglenn's Insulation Challenges
Three local realities shape how we quote, prep, and install every Northglenn job — an entire city of 1960s homes, open-plains wind, and Webster Lake-area wildlife.
One of America's First Planned Cities — 1960s Homes, Aged Past Their Prime
Northglenn’s homes are overwhelmingly 1960s–70s Perl-Mack single-family houses and townhomes, built to minimal insulation standards and long overdue for an upgrade. A little newer infill exists, but most homes here need the same thing: air sealing and a top-off to R-49+.
Front Range Climate Extremes
Out on the open north-metro plains, Northglenn takes strong, constant wind. That wind drives cold air through every framing gap around can lights, flues, and top plates — and 1960s homes leak the worst. Insulation without air sealing can’t keep up here.
Open Space = Rodent Pressure
Webster Lake, Grange Hall Creek, and the open prairie around Northglenn funnel mice toward warm attics every fall. Rodent-soiled insulation loses R-value and hurts air quality. We handle removal, exclusion, and borate-treated pest-control insulation in-house.
150+
Projects Completed
10 mi
From Our Shop to Northglenn
TAP®
Pest-Control Insulation Partner
EPA
Registered Borate Products
WHERE WE WORK
Northglenn Neighborhoods We Serve
Grizzly serves every Northglenn neighborhood and ZIP code (80233, 80234, 80260). Here’s how we typically approach insulation across the area:
ZIP codes covered: 80002 80003 80004 80005 80007
OUR PROCESS
How Grizzly Insulation Works in Northglenn
Every Northglenn project follows the same transparent path, from first call to final walkthrough, with financing made simple.
Free Home Assessment
We visit your Northglenn home, measure existing insulation depth, map air leakage, and check for moisture or rodents. No charge, no obligation.
Clear, Itemized Quote
A detailed written quote with every line item priced and explained in plain English. No mystery numbers, no pressure.
Pick Your Plan
Pay up front or choose a monthly payment option that fits your budget. Apply in seconds, decisions are fast.
Professional Installation
Our crew air-seals, cleans, and insulates — most Northglenn attics in 1–2 days — and hauls away every scrap of debris.
SAVE ON YOUR PROJECT
Northglenn Insulation Rebates & Incentives
Most Northglenn homes are served by Xcel Energy, and qualifying insulation and air-sealing upgrades can earn meaningful rebates. We handle the paperwork so your project qualifies.
Xcel Energy Rebates
Rebates available for qualifying insulation and air-sealing upgrades in Xcel service territory, which covers Northglenn.
Federal 25C Tax Credit
30% of qualifying insulation project costs, up to $1,200 per year, under the Inflation Reduction Act.
Flexible Financing
Monthly payment plans so you can fix the attic now and pay over time, apply in seconds by text or link.
REVIEWS
What Homeowners Say About Grizzly
★ ★ ★ ★ ★
We kept hearing scratching in the attic every October, and the upstairs bedrooms never held heat. Grizzly’s crew vacuumed out sixty years of filthy insulation, sealed the entry gaps, and blew in the pest-control insulation, all in one day. Two winters later: no mice, warmer bedrooms, and our January Xcel bill dropped noticeably.
S
Sarah M.
Homeowner · original Perl-Mack Northglenn Northglenn · Removal + Pest-Control Insulation
★ ★ ★ ★ ★
“Our 1968 Perl-Mack house in Northglenn was freezing and the bills were brutal. Grizzly dense-packed the walls, air-sealed the attic, and brought it to R-49. Warm for the first time in years — and the bills dropped fast.”
D
David R.
Homeowner · Webster Lake, Northglenn · Air Sealing + Attic Insulation
INSULATION ARVADA
Frequently Asked Questions
Common questions about insulation in Northglenn, answered straight.
Northglenn sits in IECC Climate Zone 5B, where attics should carry R-49 to R-60. Many pre-1980 Northglenn homes measure R-19 or less, often a third of the standard. During a free assessment we measure your current depth at multiple points and show you the exact gap. See our Northglenn attic insulation page for what’s included.
Usually yes, and these homes see the biggest gains, because they started with so little. The typical fix is air sealing first, then blown-in insulation to R-49+. If your existing insulation is degraded or rodent-soiled, removal comes first. We’ll tell you honestly if your attic is already in good shape.
Yes, in-house. Homes near Grange Hall Creek, Webster Lake, and Northglenn’s open space see steady rodent pressure. We remove soiled insulation with HEPA-filtered vacuums, seal entry gaps, and install EPA-registered borate-treated insulation that discourages nesting, one crew, one visit.
They solve different problems. Blown-in cellulose is the cost-effective choice for open attic floors where R-49+ is the target. Spray foam delivers the highest R-value per inch and doubles as an air barrier, ideal for rim joists, crawl spaces, and garages. Many Northglenn projects combine both.
Often, yes. Northglenn is in Xcel Energy territory, and qualifying insulation and air-sealing work can earn utility rebates, plus the federal 25C tax credit covers 30% of qualifying costs up to $1,200/year. Programs change, so we confirm current eligibility during your free estimate and help with documentation.
Most single-family projects finish in 1–2 days. An attic top-off with air sealing on a typical Northglenn ranch is often a single day. Whole-home projects touching the crawl space and rim joists may run two full days. You get a clear timeline with your quote, and we stick to it.
All of them, original Perl-Mack Northglenn to Fox Run, ZIP codes 80002, 80003, 80004, 80005, and 80007. Our crew is based in Commerce City, about 20 minutes away via I-76, and we offer free estimates across the entire city and Jefferson County.
EVERY COMMUNITY WE SERVE
Insulation Services Across the Front Range
Grizzly serves the entire Denver metro from our Commerce City base. Click your city for local details:
GET AN ESTIMATE
Schedule Your Free Northglenn Home Insulation Assessment → No Pressure, Written Quote
We measure your current insulation, identify your biggest energy losses, and give you a clear, honest recommendation — warmer rooms, lower bills, and no uninvited critters in the walls.
- (303) 854-6221 · Mon–Sat 8 AM–5 PM · Sun by appointment
- info@grizzlyinsulationco.com, we reply fast, usually same day
- 7140 Ivy St Unit B, Commerce City, CO 80022, 10 miles from Northglenn
Insured & Certified · 100% Guarantee · Locally Owned & Operated
Serving Northglenn From 10 Miles Away
7140 Ivy St Unit B, Commerce City, CO 80022 — fast dispatch across Northglenn & the north metro.