Attic Insulation (Blown-In)
Top off thin attics to Colorado's R-49–R-60 code target for year-round comfort and lower bills.
Learn MoreKeeping Denver Colorado homes warmer, quieter, and pest-free — season after season.
No pressure. No hidden fees. Just an honest quote.
The Grizzly Difference
We’re a local Colorado crew that treats your home like our own — straight answers, clean work, and insulation that lasts.
A Colorado company that knows Front Range homes — and Front Range winters.
Clear written quotes with no hidden fees and no high-pressure sales games.
Fully covered crews you can trust working in and around your home.
Our installations are warrantied, so the comfort and savings stick around.
Energy-efficient products that lower your footprint along with your bills.
We show up when we say we will and leave your home cleaner than we found it.
Colorado Tough, Top to Bottom
From brutal Front Range winters to high-altitude summer heat, we insulate Denver homes to stand up to whatever Colorado throws at them.
What We Do
From blown-in attics to commercial buildings, we install insulation built to handle Colorado’s extremes — and keep your home comfortable all year.
Top off thin attics to Colorado's R-49–R-60 code target for year-round comfort and lower bills.
Learn MoreHigh-performance air-sealing foam that locks out drafts in the toughest, hardest-to-reach spots.
Learn MoreSeal the hidden gaps and bypasses that quietly let your heated and cooled air escape.
Learn MoreSafe removal of old, damaged, or contaminated insulation before we re-insulate clean.
Learn MoreInsulate and protect crawl spaces to fight cold floors and rising winter energy bills.
Learn MoreBlock entry points and keep mice and pests out of your attic insulation for good.
Learn MoreInsulation solutions for offices, warehouses, and multi-unit buildings across the Front Range.
Learn MoreOur free in-home assessment pinpoints exactly where your Denver home is losing heat — no obligation.
Book Free AssessmentBuilt for the Climate
From sub-zero January nights to high-altitude summer sun, Colorado's freeze-thaw swings push your home harder than almost anywhere. When your attic can't keep up, your furnace and AC run overtime — and you feel it on every utility bill.
Simple & Straightforward
Four clear steps from first call to a warmer, quieter, more efficient home.
We inspect your attic, crawl space, and trouble spots to find exactly where heat escapes.
You get a clear, written estimate — no hidden fees, no pressure, and no surprises.
Our trained crew installs to code, protects your home, and cleans up completely.
Settle into steadier temperatures, a quieter home, and lower monthly energy bills.
As an Xcel rebate partner, we handle the paperwork so you can claim available rebates on qualifying insulation upgrades — no headaches on your end.
Financing options are available so you can get the comfort and efficiency you need now and spread the cost over time.
Make It Affordable
Upgrading your insulation shouldn't break the bank. Between Xcel Energy rebates and financing options, getting your Denver home to code is more affordable than most homeowners expect.
Where We Work
Proudly insulating homes and businesses across the Denver metro and the Colorado Front Range.
Good Questions
Straight answers to the questions Colorado homeowners ask us most.
One quick call or form is all it takes to start a warmer, quieter, more efficient home.