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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

Top-Rated Insulation pros in Longview - 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 Longview, 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
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 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

6 neighbors recently requested a quote
Recommended by94%of homeowners
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 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 rate100%
3 neighbors recently requested a quote
Pacific Spray Systems LLC
5.0(
6
)
Spray Foam Insulation - Install

Serving Longview, 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
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 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%
2 neighbors recently requested a quote
Avatar for Tommy Builders
Tommy Builders
3.9(
11
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Longview, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

"Tommy Builders did an amazing job on my kitchen! From start to finish, they were professional, detail-oriented, and made sure everything came out exactly how I wanted. The quality of work is top-notch, and I?m beyond happy with the final result. Highly recommend them for any home remodel project!"
Before
Completed
Bathroom remodel
Kitchen remodel
Kitchen remodel

+11

Response time3 days
Response rate92%
23 neighbors recently requested a quote
Secure Insulation, LLC
5.0(
6
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Longview, WA and surrounding areas

In business since 2022

Free estimates

Credit card accepted

"Sergio Garcia removed our existing wet and contaminsted insulation and replaced it, inspected attic spaces for other problematic issues and corrected them. He noted that our bathroom fans had never been vented to the outside and vented them correctly. He also noted that we had both ridge vents and gable vents and closed off the gable vents. He noted other improvements that needed should be done to maximize airflow. Work was completed quickly and efficiently. I would highly recommend him!!"
Response time12 hrs
Response rate93%
Recommended by100%of homeowners
Showing 1-10 of 39
Insulation FAQs, answered by experts

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, 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?

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?

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?

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?

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.