Level Up Insulation Co.

Level Up Insulation Co. primary logo, BPI certified Xcel Energy Registered Trade Partner insulation contractor in Denver Colorado
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Blown-In Insulation in Colorado

Complete coverage for maximum efficiency

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(720) 208-4065
If you have an under-insulated attic, drafty walls, or hard-to-reach spaces that need coverage, blown-in insulation is the most cost-effective insulation upgrade available to most Colorado homeowners. It installs fast, conforms to every irregular shape in your attic, and delivers a meaningful R-value increase without tearing your home apart.

Level Up Insulation Co. installs blown-in insulation in attics, walls, and floor cavities across Colorado. We’re BPI certified, an Xcel Energy rebate partner, and we almost always recommend pairing blown-in installation with professional attic air sealing — because insulation without air sealing leaves the most important problem unsolved.

What Is Blown-In Insulation?

Blown-in insulation — also called loose-fill insulation — is installed using a professional blowing machine that sprays loose insulation material into attic floors, wall cavities, and other spaces. Unlike spray foam insulation that air-seals as it insulates, or batt insulation that must be precisely cut and fitted, blown-in conforms to any shape — filling around joists, pipes, wiring, and every awkward corner your attic throws at it.

Two types are commonly used in Colorado:

  • Blown-In Fiberglass — Lightweight, non-combustible, and moisture-resistant. Less settling over time than cellulose. Excellent for attics and wall cavities in dry Colorado climates.
  • Blown-In Cellulose — Made from recycled paper, treated with borate for fire and pest resistance. Slightly higher density gives it better air resistance in wall applications. The same borate treatment used in our TAP pest control insulation.

Both types can reach the R-49 to R-60 target required by Colorado’s 2021 IECC energy code for Front Range attics. If your goal is maximum pest deterrence alongside insulation performance, ask us about pest control insulation (TAP) — it uses the same blown-in process with EPA-registered borate treatment.

Benefits of Blown-In Insulation for Colorado Homes

  • Fills every nook and cranny — no gaps, voids, or thermal bridges around irregular framing
  • Adds R-value on top of existing attic insulation without removal in most cases
  • Installs without opening walls — blown in through small drilled holes that are patched after
  • Class 1 fire rated — both cellulose and fiberglass meet fire resistance standards
  • Borate-treated cellulose deters insects and rodents as a secondary benefit
  • Qualifies for Xcel Energy, Tri-State, and Black Hills Energy rebate programs in Colorado

Where Is Blown-In Insulation Used?

  • Attic floors — the most common application in Colorado. Works with or without existing insulation. If you're also scheduling attic air sealing we always seal first, then blow in.
  • Enclosed wall cavities — blown in through small drilled access holes from the exterior or interior
  • Cathedral ceilings — dense-pack cellulose fills roof rafter bays completely
  • Floor cavities above unconditioned spaces, including above unencapsulated crawl spaces

For crawl spaces specifically, blown-in insulation in floor cavities is only a partial solution. A complete crawl space encapsulation addresses the moisture problem that makes blown-in floor insulation less effective in the first place.

What R-Value Do I Need in Colorado?

Colorado’s 2021 IECC energy code recommends the following for Front Range attics:
  • Denver Metro (Climate Zone 5): R-49 minimum, R-60 recommended
  • Fort Collins / Greeley (Zone 5/6 border): R-49 to R-60
  • Colorado Springs (Zone 5): R-49 minimum
  • Mountain communities (Zone 6–7): R-60 minimum strongly recommended
Most Colorado homes built before 2005 have R-19 or less in the attic — well below code. Our assessment team measures your current R-value during the free estimate and calculates exactly how many inches of blown-in you need to reach your target.

Blown-In vs. Spray Foam: Which Is Right for Your Attic?

Spray foam insulation provides superior air-sealing and a higher R-value per inch — it’s the right choice when you need a conditioned attic assembly, moisture control at the roof deck, or maximum performance in a limited space. Blown-in insulation provides excellent R-value per dollar for attic floor applications, especially when combined with proper attic air sealing first. The combination of air sealing + blown-in delivers 85–90% of the energy performance benefit of spray foam at a significantly lower installation cost. For most Colorado homeowners upgrading an existing attic, that’s the right call.

How Much Does Blown-In Insulation Cost in Colorado?

  • Blown-in fiberglass or cellulose in attics: priced per square foot installed
  • Most residential attics (1,200–2,000 sq ft): priced per square foot, depending on target R-value
  • Dense-pack wall insulation priced per square foot depending on access method

Xcel Energy rebates are available for qualifying blown-in insulation projects in Colorado. Level Up Insulation handles all rebate paperwork as a registered partner. If you’re also considering insulation removal before re-insulating, we handle both in sequence and provide a combined project estimate.

What Our Customers ask

Blown-In Insulation FAQs

Yes — and this is the most common approach for attic upgrades in Colorado. No removal is necessary unless existing insulation is water damaged, mold contaminated, or pest contaminated. If removal is needed, see our insulation removal services page for details. In most cases, we simply blow new material on top.
20–30 years with normal performance. Cellulose can settle 15–20% over time — which is factored into installation depth. Fiberglass settles less. Neither type degrades in performance when installed in a dry, properly air-sealed attic.
Not on its own. Blown-in adds thermal resistance but doesn’t seal the air leaks causing drafts. For drafty homes, the answer is always attic air sealing first, then blown-in insulation on top. The combination is the correct solution — and it’s what we recommend and install together.

Blown-In Insulation Near You in Colorado

We serve the entire Colorado Front Range. Click your city for local pricing and availability:
  • Denver Blown-In Insulation
  • Aurora Blown-In Insulation
  • Fort Collins Blown-In Insulation
  • Lakewood Blown-In Insulation
  • Arvada Blown-In Insulation
  • Colorado Springs Blown-In Insulation

Get Your Free Blown-In Insulation Estimate

Level Up Insulation Co. serves the Denver metro and the entire Colorado Front Range. BPI certified, Xcel Energy rebate partner. Call or fill out our contact form for a free, no-pressure estimate — we assess your home and give you a clear quote with no hidden fees.
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