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TRUSTED BY LONGVIEW, WA HOMEOWNERS

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

Find Insulation pros in Longview

Avatar for Northwest Weatherization
Northwest Weatherization
4.8(
154
)

Serving Longview, 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

11 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for HomeRx
HomeRx
4.3(
110
)

Serving Longview, 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
159 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Two Brothers Insulating, LLC
Two Brothers Insulating, LLC
4.6(
10
)

Serving Longview, 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 rate96%
3 neighbors recently requested a quote
Avatar for Acorns Attics & Crawls, LLC
Acorns Attics & Crawls, LLC
5.0(
17
)

Serving Longview, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"I’m very satisfied with the insulation work performed under my house. My home is now toasty warm on my feet. Phillip and his worker showed up on time, went about their work and cleaned up the mess created in the process. I am greatful that I found such a competent company."
Response time4 hrs
Response rate99%
27 neighbors recently requested a quote
Avatar for JSV Contractor, LLC
JSV Contractor, LLC
5.0(
3
)

Serving Longview, WA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Great company to work with. They were the only company to come out and look at the job and have a very good price They arrived early worked very hard and did a excellent job I will definitely be using them again and again for future jobs"
Response time2 hrs
Response rate96%
3 neighbors recently requested a quote
Avatar for C&W Insulation
C&W Insulation
New to Angi

Serving Longview, WA and surrounding areas

Approved

In business since 2025

Free estimates

Small jobs welcome

C&W Insulation is a full-service residential insulation company specializing in blown-in insulation installation and upgrades. With a highly experienced and specialized team, we also offer expert installation of batt, rolled, and reflective insulation, as well as soundproofing solutions. Whether you're looking to improve energy efficiency or reduce noise, C&W Insulation delivers quality workmanship and lasting results tailored to your home's needs.\n\n\n\n\n

Response time2 hrs
4 neighbors recently requested a quote
Avatar for Alpha Energy Savers
Alpha Energy Savers
4.3(
39
)

Serving Longview, 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."
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Recommended by87%of homeowners
Showing 1-10 of 36
Insulation questions, answered by experts

In Longview, you can safely address small drafts by sealing gaps around windows and doors with weatherstripping. When inspecting your attic, use a flashlight to spot any damp insulation or rodent nests, which are common in this area. Always wear gloves and a mask to avoid allergens. If you notice persistent moisture or unusual odors, it’s best to contact a local insulation expert.

Helpful?

In Longview, most attic insulation projects are completed within one to two days, while crawl space or wall insulation typically takes a similar timeframe. Whole-home insulation upgrades may extend up to five days, especially in older homes that need extra preparation. Projects scheduled during the rainy season may face short delays, so planning ahead for summer installations is recommended due to higher demand.

Helpful?

Insulation in Longview benefits from yearly inspections, especially before the wet season, to check for moisture buildup or pest activity. Make sure attic and crawl space vents remain clear, and reseal any gaps that develop over time. Watch for moss or algae near exterior walls, as these can signal water intrusion. Periodic professional assessments help ensure your insulation continues to support energy efficiency.

Helpful?

In Longview, the damp climate and frequent rainfall near the Columbia River can make moisture control a top priority for insulation projects. Opt for insulation materials that resist mold and mildew, and ensure proper installation of vapor barriers. Consider the unique architecture of older Longview homes, which may require custom solutions for energy efficiency. Scheduling during the drier summer months helps avoid weather-related delays and ensures optimal results.

Helpful?

Homeowners in Longview often overlook the need for moisture barriers, leading to mold growth in crawl spaces. Blocking attic vents is another frequent issue, which can trap humidity and reduce energy efficiency. Skipping air sealing before adding insulation is also common. Using insulation not suited for Longview’s climate or neglecting to check for wildlife intrusion can further undermine your project’s effectiveness.

Helpful?

The Longview, WA homeowners’ guide to insulation services

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