Spray Foam Insulation in Denver, Colorado
Seal out Colorado’s cold, slash your energy bills, and keep every room comfortable year-round with professional spray foam insulation.
Lower Energy Costs
Healthier Indoor Air
Improved Indoor Comfort
Long-Term Protection
Why Denver Homeowners Trust Grizzly
Spray foam is the highest-performing insulation we install. It expands on contact to seal every gap, crack, and cavity in a single step, giving your home an airtight thermal barrier that fiberglass and blown-in cannot match. For Denver homeowners that means lower energy bills, steadier room temperatures, and a building envelope built to handle Colorado’s freeze-thaw winters, dry air, and intense high-altitude sun.
ENERGY SAVINGS
Cut heating and cooling loss with one continuous air seal.
YEAR-ROUND COMFORT
Hold steady temperatures through Denver’s coldest nights and hottest afternoons.
AIR SEALING EXPERTISE
Spray foam expands to fill and seal every gap, crack, and penetration.
MOISTURE PROTECTION
Closed-cell foam doubles as a moisture and vapor barrier.
PEST-RESISTANT SOLUTIONS
A solid foam barrier leaves rodents and pests nothing to nest in.
RESIDENTIAL & COMMERCIAL EXPERIENCE
Spray foam for homes, offices, warehouses, and new construction.
From Free Quote to Finished Job
STEP 1
Free Inspection
We inspect your attic, crawl space, and rim joists, then map where spray foam will save you the most.
STEP 2
Personalized Advice
We recommend open-cell or closed-cell foam based on the area, your goals, and your budget.
STEP 3
Professional Installation
Our trained crew sprays clean, even foam at the correct thickness and full coverage.
STEP 4
Long-Term Results
Enjoy a quieter, more comfortable home and lower energy bills for decades.
Is Your Home Drafty, Cold, or Expensive to Heat?
Many insulation and energy-efficiency issues develop gradually, making them easy to overlook. If you’re experiencing any of the signs below, your property may benefit from a professional inspection.
High Energy Bills
If heating and cooling costs continue to rise, insufficient insulation or hidden air leaks may be forcing your HVAC system to work harder than necessary.
Drafts & Air Leaks
Noticeable drafts around doors, windows, attics, or crawl spaces can lead to energy loss and reduced indoor comfort.
Pest Activity or Contaminated Insulation
Rodents and pests can damage insulation, leave contaminants behind, and reduce its effectiveness over time.
Uncomfortable Attic or Crawl Space Conditions
Extreme temperatures, humidity, or poor ventilation in these areas can affect the comfort and efficiency of the entire building.
Uneven Room Temperatures
Hot and cold spots throughout your property often indicate inadequate insulation coverage or areas where conditioned air is escaping.
Old or Damaged Insulation
Settled, compressed, wet, or deteriorated insulation may no longer provide the protection your property needs.
Moisture, Humidity, or Mold Concerns
Excess moisture in attics or crawl spaces can contribute to mold growth, structural issues, and poor indoor air quality.
Aging Commercial or Residential Buildings
Older properties often lack modern insulation standards and may be missing key energy-saving improvements.
Book Your Free Home Inspection
Get a Free Quote
We will respond within 24 hours
For Homes and Commercial Buildings
RESIDENTIAL
Improve comfort, indoor air quality, and energy efficiency throughout your home.
COMMERCIAL
Reduce operating costs, improve building performance, and support occupant comfort.
Where Foam Makes the Biggest Difference
Spray foam delivers the biggest impact in these key areas of your home or building.
Attics & Rooflines
Spray foam on the underside of the roof deck creates a conditioned attic space, eliminating the extreme heat that traditional attics experience in summer.
Rim Joists & Band Boards
These areas are notorious for air leaks. Spray foam seals them completely, stopping cold air infiltration in winter.
Crawl Spaces & Basements
Closed-cell spray foam on crawl space walls creates a moisture barrier and insulates simultaneously.
Walls (New Construction)
For maximum energy efficiency in new builds, spray foam in wall cavities eliminates thermal bridging and air leakage.
Serving Denver & the Front Range
Questions Homeowners Ask Us Most
Closed-cell foam is denser, delivers about R-6.5 to R-7 per inch, and doubles as a moisture and vapor barrier, which makes it the first choice for crawl spaces, rim joists, and basement walls in Colorado’s freeze-thaw climate. Open-cell foam is lighter, runs about R-3.7 per inch, costs less, and works well in interior walls and attic roof decks where moisture control is less critical. During your free inspection we will tell you exactly which foam fits each part of your home.
Spray foam is priced by the square foot and by thickness, so cost depends on the size of the area, how much foam is needed to reach your target R-value, and whether it is open-cell or closed-cell. Closed-cell costs more per inch but delivers more R-value and moisture protection in less space. Rather than quote a misleading average, we measure your project and give you a clear, itemized estimate at no charge, and we offer financing so you can spread the cost into monthly payments.
Often, yes. As an Xcel Energy trade partner, Grizzly can help you tap into available insulation and air-sealing rebates that lower your out-of-pocket cost. Programs and amounts change over time, so we confirm exactly what you qualify for during your estimate and help with the paperwork wherever we can.
Once spray foam is installed correctly and fully cured, it is inert and safe to live with. Curing typically completes within 24 hours, and we ask that the work area stay vacant during application and the initial cure. A clean, safe cure comes down to spraying at the right ratio and thickness, which is exactly why spray foam is a job for trained professionals and not a DIY project.
Spray foam air-seals and insulates in one step and carries the highest R-value per inch, so it wins in crawl spaces, rim joists, and other hard-to-seal areas. Blown-in cellulose is the cost-effective choice for open attic floors. Most Denver homes do best with a combination, and we will map out the most cost-effective mix during your free inspection.
Still Have Questions?