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Top-Rated Spray foam insulation pros in Denver - Updated Nov 2026

Avatar for Denver Insulation, LLC
Denver Insulation, LLC
4.5(
98
)

Serving Denver, CO and surrounding areas

Approved

In business since 1993

Free estimates

Credit card accepted

"Minimal clean up do after the job was done. Denver Insulation is using the very top grade foam glass insulation to perform the work"
Untitled Gallery 1
Poly
Home
Untitled Gallery 1
Ceiling

+10

Response time2 days
7 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Innovative Solutions Insulation & Drywall, LLC
Innovative Solutions Insulation & Drywall, LLC
4.7(
105
)

Serving Denver, CO and surrounding areas

Approved

In business since 2005

Free estimates

Customers say: Quick response

"Tyler was quick to respond. Did a great job explaining my situation and didn't sell me something that was not needed. I would contact him again and will recommend him!"
www.isid.us
Response time3 hrs
Recommended by100%of homeowners
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Avatar for ATTICPRO INSULATION LLC
ATTICPRO INSULATION LLC
5.0(
8
)

Serving Denver, CO and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"I had a great experience with this insulation company. The crew showed up on time, were very professional, and did a really great job. They were friendly, worked efficiently, and left everything clean when they were finished. I’m very happy with the quality of the work and would definitely recommend them to anyone looking for insulation."
Attic Insulation
Attic Insulation
Attic Insulation
Attic Insulation
Attic Insulation

+13

43 neighbors recently requested a quote
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Avatar for Insulation Station
Insulation Station
4.9(
34
)

Serving Denver, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"Insulation station did a tremendous job putting insulation in my attic it has made a tremendous improvement in keeping my home warm money well spent"
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+50

Response time1 day
Response rate98%
67 neighbors recently requested a quote
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Montgomery Insulation, Inc.
4.7(
61
)

Serving Denver, CO and surrounding areas

Approved

In business since 1997

Free estimates

Small jobs welcome

"It's hard to know about the quality of the work since I wasn't up in the attic with him. Would have been nice to have before and after pictures so I could see the amount of new insulation blown in. I just have to take Jasons' word for it. His cost was about 30% lower than the competition I got bids from. Overall satisfied."
Vaulted Ceiling Insulation
Response time12 hrs
Response rate91%
22 neighbors recently requested a quote
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Avatar for Empower Insulation, LLC
Empower Insulation, LLC
5.0(
11
)

Serving Denver, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Small jobs welcome

"I had an excellent experience with Empower Insulation from start to finish. They took the time to explain all of my options, answered every question I had, and helped me choose the best insulation solution for my home. I highly recommend Empower Insulation to anyone looking for top-notch insulation services. Great company, great service, and even better results!"
Custom Home New Build
Custom Home
Custom Home
Insulation Attic
Insulation Removal

+11

Response time1 day
4 neighbors recently requested a quote
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FAQs for spray foam insulation projects in Denver, CO

Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.

R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.

Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.

You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.

Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.