Since 1993

Attic Insulation

Q: How much does attic insulation cost in Colorado?

Attic insulation from Excel Roofing typically costs $2,000 to $6,000, with the average blown-in fiberglass project running about $3,800. Final cost depends on square footage, the R-value you want to reach, whether existing insulation needs to be removed first, and any air-sealing work needed before the new insulation goes in. We provide a written estimate after a free inspection of your attic.

Q: What type of attic insulation does Excel Roofing install?

Excel Roofing installs blown-in fiberglass and fiberglass batt insulation. Blown-in is the most common and most cost-effective option for existing attics — it fills gaps, settles around obstructions, and reaches the higher R-values Colorado homes need. Batt insulation works well in accessible joist bays and new construction. Excel Roofing does not install spray foam.

Q: How do I know if my attic needs more insulation?

Watch for uneven temperatures between rooms, high heating and cooling bills, ice dams in winter, and visible gaps or compression in the existing insulation. If you can see attic joists poking up through the insulation, you don't have enough. Most Colorado homes built before 2000 are under-insulated by today's energy code. A free Excel Roofing attic inspection will tell you exactly where you stand.

Q: Does new attic insulation reduce energy bills?

Yes. Properly installed attic insulation can reduce heating and cooling costs by 10–20% in most Colorado homes, and homeowners often see the difference on their first full bill. Insulation also makes upstairs rooms feel more comfortable year-round, helps prevent ice dams in winter, and extends the life of your HVAC system by reducing how hard it has to work.

Excel Roofing is the professional contractor that protects your home and family with high-quality attic insulation solutions. You benefit from improved energy efficiency, lower utility bills, and consistent year-round comfort.

Trusted Local Roofing Experts

Flexible Financing Options Available

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Watch an attic have insulation installed with J Bretz, CEO

Fiberglass Blow-In Insulation

$2,000–$6,000 depending on attic size and target R-value. Our average fiberglass blow-in insulation project is $3,800. You get clean, even coverage that improves energy efficiency and year-round comfort. The insulation is installed to your target R-value so your attic performs consistently in every season.

As part of your overall roofing system, Attic Insulation plays a critical role in protecting your home’s structure and maximizing energy performance. At Excel Roofing, we ensure your insulation is properly installed to work seamlessly with your roof and ventilation system.

Owens Corning has held an estimated 70% of the fiberglass insulation market in the U.S Owens Corning is our preferred manufacturer. We have been a partner with OC (Owens Corning) for over 30 years.

Owens Corning Platinum Preferred

Certified Partner

Owens Corning Platinum Contractor

We have proudly held Platinum status for decades and have been a trusted part of the Owens Corning network for years. J. Bretz is a Platinum Advisory Board alumnus.

Excel Roofing is Family-Owned & Operated

Roughly 70% of roofing companies comparable to Excel Roofing have been acquired by major corporations or sold to outside investors. Excel Roofing has not.

We have had the same leadership and decision-makers in place since day one, allowing us to stay independent, consistent, and accountable to our customers.

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Financing Available

Financing is available for qualified homeowners. Excel Roofing offers financing options for customers with FICO scores as low as 480. We provide flexible financing solutions designed to fit a wide range of homeowner needs.

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Energy Efficiency Starts in the Attic

Is Your Attic Insulation Doing Its Job?

Most Colorado homes built before 2000 are under-insulated by today's energy code. If you're seeing high energy bills, uneven temperatures, or ice dams, these answers will help you understand what's going on and what it costs to fix.