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Grizzly Insulation Co

Aurora Insulation  ›  Attic Insulation

Attic Insulation in Aurora, CO

Most older Aurora attics hold R-11 to R-19 — and Original Aurora’s bungalows often measure close to zero. Zone 5B calls for R-49 to R-60. In a windy Front Range city, that gap shows up as cold rooms and steep bills. Grizzly closes it, usually in a day.

Your local crew, 10 miles away

Commerce City HQ · all 5 Aurora ZIPs

Where does your attic stand?

R-value measures how well insulation resists heat flow — the higher the number, the better your home holds temperature. Here’s how typical Aurora attics compare to the Zone 5B standard:

1950s–70s ranch, original insulation, ≈ R-11
Typical pre-1990 Aurora attic today, ≈ R-19
IECC Climate Zone 5B minimum, R-49
Grizzly install target, R-49 to R-60
TRUSTED PRODUCTS & PARTNERS

The Brands Behind Every Grizzly Install

We don’t install mystery material. Every Aurora project uses products from the industry’s most trusted manufacturers.

01THE PROBLEM

Heat Rises. In an Old Aurora Cottage, It Just Leaves.

On a subzero January night, an under-insulated attic bleeds furnace heat straight through the roof — and in Aurora’s older cottages there’s often little up there to slow it. In July, that thin attic bakes the upstairs. The attic is where an Aurora home wins or loses the comfort battle.

AInsulation that settled decades ago

Original Aurora’s WWII-era bungalows were built before insulation was standard; the 1990s–2000s homes in Southshore and Toll Gate Creek got code-minimum R-19. Both have thinned or settled over time. What looks like a covered attic floor is often performing at half spec — or less.

BAir leaks feeding the stack effect

Can lights, attic hatches, flues, and chases leak warm air upward. Aurora’s Front Range wind supercharges that stack effect — which is why we air-seal the ceiling plane before a single inch of insulation goes down.

CRodent-damaged material near open space

Each fall, mice move from Toll Gate Creek, Aurora Reservoir, and the surrounding open space into warm attics. Soiled insulation loses R-value and degrades indoor air quality, so it comes out — cleanly — before new material goes in.

DOld code minimums in newer neighborhoods

Even newer builds in Southshore and Hoffman Heights met the code of their day, not today’s R-49–R-60. A one-day top-off brings them current and cuts the heating load.

02THE FIX

Two Proven Paths. One Honest Recommendation.

We inspect first, then recommend only what your attic needs. Most Aurora homes are best served by blown-in cellulose; some older cottages need dense-pack walls or spray foam too. We’ll tell you which — and why.

 Blown-In CelluloseMost Aurora atticsSpray Foam (Roofline)The airtight premium option
How it worksDense cellulose blown over the attic floor to R-49–R-60Closed-cell foam applied at the roofline, creates a conditioned attic
Best forRanches, split-levels, top-offs over clean existing insulationVaulted ceilings, HVAC equipment in the attic, chronic ice dams
Install time One day for most homes1–2 days
Cost per R-value LowestHigher upfront, strongest envelope
Air sealing Included as a separate step first Built into the foam itself
Pest deterrence Borate-treated options available, Not a pest product
Eco profile Recycled-content material, Petroleum-based
Our verdict: the right answer for most Original Aurora, east Aurora, and Aurora Reservoir homes.
When foam wins: furnace in the attic, vaulted ceilings, or returning ice dams. See spray foam in Aurora.
03WHAT TO EXPECT

One Day on Your Street. Here's How It Goes.

A typical Aurora attic insulation project, from first knock to final walkthrough:

STEP 1 · PREP
Walkthrough & protection

We confirm the plan from your inspection, then protect flooring, HVAC equipment, and anything stored near the attic access.

STEP 2 · REMOVAL
Removal, only if needed

Rodent-soiled or water-damaged material comes out through HEPA-filtered vacuums. Clean existing insulation stays and gets topped off.

STEP 3 · AIR SEALING
Air sealing, the step most skip

Every can light, hatch, flue, and top-plate gap sealed with foam or caulk. Insulation over air leaks is money over a hole.

STEP 4 · INSTALLATION
Depth gauges & blow-in

Rulers installed across the attic floor, then cellulose blown to the depth that delivers R-49+ after natural settling, 14 to 17 inches.

STEP 5 · QUALITY CHECK
Verification, cleanup, walkthrough

Depth checked and photographed at multiple points, work area cleaned, debris hauled away. You feel the difference that night.

The Grizzly 100% Guarantee

If the work isn't right, we make it right. That's the reputation we've built across the Front Range, and it's our only sales pitch.

04COST & SAVINGS

What Attic Insulation Costs in Aurora

No two attics price the same, so we don’t quote from a script. Four things move the number, and you’ll see each one itemized in writing after a free inspection, before you commit to anything.

Attic square footage

The floor area we seal and cover

Current R-value

How far your attic is from R-49

Air-sealing scope

Can lights, chases, and hatch condition

Removal needs

Only if material is soiled or damaged

Three ways the net cost drops

Xcel Energy rebates

Qualifying attic insulation + air-sealing upgrades earn utility rebates across Aurora. We flag what applies in your estimate.

Federal 25C tax credit

30% of qualifying insulation costs, up to $1,200 per year, under the Inflation Reduction Act.

Lower bills, every month

Heating and cooling dominate Front Range energy bills, and the attic is the highest-impact upgrade point in most Aurora homes.

★ ★ ★ ★ ★

“They measured our Original Aurora cottage at almost R-0 in the attic, explained every line of the quote, and had air sealing plus blown-in cellulose done in a day. Warm for the first winter in years.”

D
David R.

Homeowner · Original Aurora, Aurora · Air Sealing + Attic Insulation

05QUESTIONS

Attic Insulation in Aurora, Answered Straight

Prefer to just ask?

Call and talk to the crew that will actually be in your attic.

Aurora sits in IECC Climate Zone 5B, where attics should carry R-49 to R-60, roughly 14–17 inches of blown-in cellulose. Most pre-1980 Aurora homes we inspect measure R-11 to R-19. Your free assessment includes depth measurements at multiple points, so you see the exact gap in inches before any quote.

Four factors set the price: attic square footage, current R-value, air-sealing scope, and whether old material needs removal. You get a fully itemized written quote after a free inspection, and Xcel Energy rebates plus the federal 25C tax credit (30% of qualifying costs, up to $1,200/year) reduce the net cost for most Aurora projects. Financing is available.

Blown-in cellulose is the cost-effective answer for open attic floors and top-offs, that’s most Aurora homes. Spray foam earns its premium when HVAC equipment lives in the attic, ceilings are vaulted, or ice dams keep returning. We inspect first and recommend only what your attic needs.

Only when necessary. Clean, dry material gets topped off, the budget-friendly path. Rodent-soiled, moldy, or water-damaged insulation comes out first via HEPA-filtered removal. Homes near Toll Gate Creek, Aurora Reservoir, and Aurora Reservoir need this most often.

Most Aurora attics are air sealed and insulated in a single day, removal projects typically run one to two days. Your quote includes a firm timeline, and we stick to it.

In most cases, yes. Ice dams form when attic heat melts roof snow that refreezes at the cold eaves. Air sealing plus R-49+ insulation removes the heat source, the permanent fix, versus roof rakes and heat cables that only treat the symptom. We correct attic ventilation where needed too.

07GET STARTED

Find Out What Your Attic Is Costing You.

Free inspection. Exact R-value reading. Itemized quote with rebate guidance. Zero pressure, and most attics fixed in one day.

Get Your Free Attic Quote

Takes 30 seconds. We reply within 24 hours.