Top-rated insulation pros.

Best insulation pros near Castle Rock, WA

Enter your zip and get matched with up to 5 pros

Need a pro for your insulation service project in Castle Rock, WA?

Select your specific project to find the pro for you.

TRUSTED BY CASTLE ROCK, WA HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon43
    Verified insulation services reviews

Verified Reviews for Insulation Service pros in Castle Rock, WA

*The Angi rating for Insulation Service companies in Castle Rock, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.

*The HomeAdvisor rating for Insulation Service companies in Castle Rock, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.

Last update on May 29, 2025

Top-Rated Insulation pros in Castle Rock - Updated Nov 2026

Avatar for Lake Atitlan Insulation LLC
Lake Atitlan Insulation LLC
5.0(
20
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Castle Rock, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"We had Lake Atitlan Insulation remove our old insulation and replace it with R-38. I enjoyed working with Nanni from the initial meeting to the final step of installing the insulation. Very knowledgeable lady and truly exceptional customer service. A highly recommended insulation contractor."
Before & After
Before & After
Before & After
Before & After
Before & After

+5

Response time9 hrs
Response rate93%
3 neighbors recently requested a quote
Request Quote
Avatar for Northwest Weatherization
Northwest Weatherization
4.8(
154
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+2 more

Serving Castle Rock, WA and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

"On day 1 they removed (sucked out) 3 levels (and three different types) of insulation. They were very neat and cleaned up afterward. They showed me pictures of the cleared attic. On day 2 they blew in new insulation, sealed an unused vent (which was causing a draft) and installed a new attic hatch (old one was broken, unsealed and not insulated causing a draft). Everything was done as agreed and in the timeline expected. They are also a partner with Energy Trust of Oregon which is a bonus."
Attic Blow
Our tech went out to check the progress of the job, customer service is our priority.
Crawlspace
Wall drill & blow
Attic Blow

+12

6 neighbors recently requested a quote
Recommended by94%of homeowners
Request Quote
Avatar for HomeRx
HomeRx
4.3(
110
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Castle Rock, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Credit card accepted

"They installed new insulation for us in an un-insulated attic space. They were well-priced, on-time, and very easy to work with. Workers all wore protective equipment and were both professional and friendly."
Masking off rooms
West Seattle custom
Lead safe practices
Yard taped off for Lead Safe
Keeping your home clean is important to us

+12

Response time1 day
169 neighbors recently requested a quote
Recommended by85%of homeowners
Request Quote
Avatar for Two Brothers Insulating, LLC
Two Brothers Insulating, LLC
4.6(
10
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Castle Rock, WA and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

We pride our company on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

Response time4 hrs
Response rate100%
3 neighbors recently requested a quote
Request Quote
Pacific Spray Systems LLC
5.0(
6
)
Spray Foam Insulation - Install

Serving Castle Rock, WA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer spray foam insulation services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

Response time2 days
2 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
Avatar for JSV Contractor, LLC
JSV Contractor, LLC
5.0(
3
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Castle Rock, WA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Good work, quick response, reasonable rates, very nice person."
Response time2 hrs
Response rate96%
2 neighbors recently requested a quote
Request Quote
Avatar for Puget Partners Insulation, LLC
Puget Partners Insulation, LLC
4.7(
39
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Castle Rock, WA and surrounding areas

In business since 2020

Free estimates

Warranties offered

"They were prompt with a bid insulation scheduling and did the work at a fair price"
Home Insulation Upgrade
Wall Insulation
Interior home overview
Wall Insulation
Home Insulation Upgrade

+14

Response time2 days
Recommended by96%of homeowners
Request Quote
Avatar for Alpha Energy Savers
Alpha Energy Savers
4.3(
39
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Castle Rock, WA and surrounding areas

In business since 1979

Free estimates

Credit card accepted

"I got a rebate from the state for having this service done. Their were two men that came out and they were able to get it done within two days. They put insulation in under our home and in the attic. I did notice a difference in our home after this. They were very professional and you could not even tell they were there."
Additional Photos
Additional Photos
Additional Photos
Recommended by87%of homeowners
Request Quote
Showing 1-10 of 38
Insulation FAQs, answered by experts

Yes, exposure to fiberglass insulation can cause harm to your skin and eyes. However, this typically refers to the fiberglass insulation that is mostly used in walls and attics. Fiberglass doors don’t pose risks for fiberglass exposure because they're fully encased in polymer cladding.

The best R-value for home insulation depends on where you live and where you’re installing the insulation. Your climate zone plays the biggest role in determining the correct R-value, so be sure to know which zone you live in when determining the R-value you need.

Yes, it is possible to have too much insulation, which can have detrimental effects. While more insulation might seem better for energy efficiency, a home needs to "breathe" or ventilate to release moisture that accumulates inside. Over-insulating can seal a house too tightly, trapping water vapor and leading to several problems, including mold, mildew, and condensation. Homes in warm, humid climates are particularly susceptible to mold, while those in colder climates can experience condensation from temperature fluctuations. Additionally, adding more insulation than the recommended amount for your climate may not provide recoverable energy savings. To avoid these issues, consult a professional insulation contractor who can determine the optimal amount of insulation for your home.

Several types of insulation are effective for crawl spaces, with spray foam and rigid foam boards being two of the best options. Closed-cell spray foam insulation is a strong choice because it effectively repels moisture, resists biological growth, seals the air, and provides excellent thermal protection, especially in hard-to-reach areas. Rigid foam insulation boards are another excellent material as they insulate well, resist water damage, and will not settle over time like fiberglass or cellulose.

The cost to install a radiant barrier ranges from $700 to $2,800, depending on the size of your roof and the type you choose. Most people pay an average of $1,700 to install a radiant barrier. Foil options, both single- and double-sided, cost between $0.10 and $0.90 per square foot, while spray-on options start at $0.60 and go all the way up to $1 per square foot—which can add up quickly.

The Castle Rock, WA homeowners’ guide to insulation services

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

See all articles