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TRUSTED BY CASTLE ROCK, CO HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon293
    Verified insulation services reviews

Find Insulation pros in Castle Rock

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

Serving Castle Rock, 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
6 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Thermal Home Insulation
Thermal Home Insulation
5.0(
27
)

Serving Castle Rock, CO and surrounding areas

Approved

In business since 1972

Free estimates

Emergency services offered

"Thermal Home Insulation did blown in insulation, air sealing, and radiant barrier work in my attic. The initial estimate took place quickly after my inquiry, and was very informative. Jim was able to get the job scheduled within 1 week as well, and was able to help me take advantage of a material discount and home energy efficiency program discount as well. The house already does a better job of retaining heat and cold. Thank you for the good work in a very timely manner, and for answering my questions along the way and being flexible. Would recommend to anyone with high energy bills due to their attic space temperature balance."
Attic Job from 2023
Attic Job From 2023
Attic Job From 2023
Attic Job From 2023
Attic Job 2023

+11

Response time1 day
23 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Empower Insulation, LLC
Empower Insulation, LLC
5.0(
11
)

Serving Castle Rock, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Small jobs welcome

"Empower Insulation did a fantastic job installing insulation at my house. They were professional, efficient, and made sure everything was done right. I really appreciated their attention to detail and how clean they left the space afterward. Highly recommend them if you’re looking for quality insulation work!"
Custom Home New Build
Custom Home
Custom Home
Insulation Attic
Insulation Removal

+11

Response time1 day
1 neighbors recently requested a quote
Avatar for Insulation Nation
Insulation Nation
4.8(
10
)

Serving Castle Rock, CO and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"We were very impressed with Insulation Nation’s professionalism, promptness, cleanliness and the incredible results we have experienced from the job they did in our attic. They made the process very easy at a reasonable price and we would strongly recommend them!"
Filled all exterior walls with dense pack cellulose insulation
Installed radiant barrier throughout entire attic above garage.
Additional Photos
Additional Photos
Additional Photos

+1

3 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Koala Insulation of Denver
Koala Insulation of Denver
4.4(
8
)

Serving Castle Rock, CO and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"Very professional. On time and called ahead and they were very knowledgeable. Uriel Domingues did the work and was very respectful. I recommend Koala and Uriel anytime. I had them remove my insulation from my attic and now Iâ ll definitely have them install the new insulation when Iâ m done with my kitchen remodel."
Fiberglass Attic Insulation
Attic Insulation using Fiberglass
Crawl Space Before & After
Spray Foam
Batt Roll in Insulation

+3

Response time1 day
28 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for USI Powers Insulation
USI Powers Insulation
3.4(
8
)

Serving Castle Rock, CO and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"They cleaned up pretty well, but there was a little we had to clean up as well. We liked their professionalism and the way in which they answered all our questions before they commenced work."
Response time1 day
5 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for AtticWise, Inc.
AtticWise, Inc.
5.0(
5
)

Serving Castle Rock, CO and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

We at AtticWise, take pride in our reliability, integrity and the quality of our work. We specialize in comprehensive home insulation needs offering the products and services of AtticShield? - an industry leader in reflective insulation - and Johns Manville? - provider of the utmost quality blown-in insulation. We make it a point to provide the highest level of customer service with both residential and commercial clients and apply the same attention to detail regardless of project size or complexity. We look forward to earning your business!

project photos
After energy barrier
After energy barrier
Before
After

+3

9 neighbors recently requested a quote
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Insulation questions, answered by experts

Installing sheets of plywood over attic insulation is a popular choice, especially in storage spaces. That said, insulation works by trapping hot air—so it needs extra space to expand and be effective, or you might reduce the energy efficiency of your home. 

It’s important that you never compress the insulation by installing flooring directly on top of it. In many houses, you’ll need to install a subfloor before putting plywood over insulation in your attic.

Drywall insulation costs around $1,800, on average, but prices can range from $500 to $4,500, depending on a few different factors. The following things are important considerations to make when pricing out your insulation project:

  • Square footage of insulation

  • Type of insulation 

  • Climate in your area and the insulation R-value required

  • Whether or not your walls are already finished

  • Accessibility of the area 

  • Whether or not you need old insulation removed first

Hanging a thick blanket over your windows will help to keep the heat inside, but only a little. Covering the glass will also prevent the sunlight from getting in, which might actually decrease the efficiency of your window overall. If you get to the point where you’re hanging blankets over your window to keep warm, call in an expert to seal around your windows to prevent warm air from escaping. They may also recommend replacing old windows that aren’t as insulative as newer window technology. Sealing a window isn’t terribly expensive and can make a big difference.

The most affordable way to insulate behind unfinished walls is to install fiberglass batts or rolls. These total around $0.75 per linear foot, with the width matching the gaps between standard studs perfectly. However, it’s important to consider the R-value of your insulation and the climate in your area, as fiberglass insulation isn’t the best in terms of preventing heat transfer. Plus, the most affordable option may cost more on electricity bills over time. The most affordable way to insulate behind finished walls is to leave them up and use blown-in insulation to avoid drywall replacement.

Rigid foam board insulation is one of the safest insulation materials for basement walls. The panels offer a moisture barrier to prevent mold and mildew build-up. At the same time, this material is also fire-resistant, so you don’t have to worry as much about a fire breaking out as you would with spray foam insulation. 

The Castle Rock, CO homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.