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Attic Insulation Seattle

Ensuring that the attic of your Seattle home is properly insulated is crucial for cutting down on energy costs. Moreover, effective insulation plays a key role in safeguarding your family’s well-being, minimizing indoor pollutants, and enhancing the overall air quality within your home. We handle all of your attic and crawl space needs.
Let us do the dirty work – so you can enjoy it!

Providing top-notch attic insulation services in your area

Insulation Co. is your go-to company for all your attic insulation needs. Get a comfortable home with Insulation Co. LLC.

Request your FREE estimate today!

attic cleaning

Attic cleaning includes but is not limited to basic cleanup, including junk and debris removal. Decontamination of rodent infestation and if applicable, mold removal (at an additional price). Our service includes removing old insulation, cleaning, and sanitizing. We remove hazardous materials or potentially harmful contamination. also will lead to longer lifespan for your HVAC system, reducing the maintenance and replacement costs in the long run. .

attic insulation removal

Whether you need to remove your insulation depends on several different factors. If you have had rodents, water damage, mold, or other issues it is important to replace all of your insulation. 

attic insulation installation

Attic insulation installation comes with a variety of benefits, including reduced energy bills, less air leakage, more comfortable and stable temperatures throughout your home, and better air quality.

attic air seal

The attic is where you will usually find some of the largest opportunities to save energy in your home. If you air seal your attic, you can stop many major air leaks and help to maintain the desired temperature throughout your home. 

attic mold removal

Attic mold removal is a common service in the Seattle, WA area because of all of the moisture and condensation. We can help clear up the mold in your attic or crawl space, although not included in the attic cleaning bid we can price it out separately for your convenience. 

Looking for professional attic insulation services in your area? INSULATION CO. LLC has the solutions

The process is easy!


Tell us exactly what you need

For any project, including insulation services, mold removal, sump pump installation, French drain systems, and many more, we offer each customer a FREE virtual estimate and consultation to discuss your project’s needs. 


We'll do all the dirty work for you

Leave the dirty work to the pros. Our highly trained experts, with over 20 years of experience in the industry, will ensure that your job is done right. All of our insulation service work is backed by a 10-year warranty


Enjoy a comfortable home and lower energy bills!

As soon as our work is done, you will immediately start to notice the difference in the temperature of your home! The next step is to wait until you see the price difference in your energy bills and see how much you will save

tell, tell signs it is time to replace your attic insulation

If you are facing a rodent infestation in your attic, it is time to take some steps to prevent any further damage. 

  • Rodent Proofing the attic by sealing off any entry points.
  • Remediate any existing rodent damage and this includes removing all the insulation that is contaminated, disinfecting the attic space, and then installing new insulation.

If mold is found on the insulation in your attic or any surrounding areas, you will need to consider attic insulation removal and replacement. Mold growth on any surface in your home is bad since it can impact the air quality throughout your home. If you have mold growth in your attic this is a sign of two things. 

  • There is a source of moisture causing the mold to grow and needs to be addressed before installing new insulation.
  • Your attic insulation needs to be replaced and the entire attic needs to be remediated. 

Before the new insulation is installed it is crucial to air seal your attic space. This helps with moisture issues because when there are gaps in your insulation this will cause any moist or warm air to seep into the insulation and cause condensation that in time will lead to mold growth. 

If you live in an older home and the insulation has never been replaced it is definitely time to replace it. Older homes contain older insulation which may not be offering sufficient or adequate thermal resistance for your home’s needs. 

The quality of your air in the attic has a big impact on the air quality in your home. Over time, the vented attic spaces can get covered with a layer of dust and debris that are blown in from the outside. This dust will settle onto everything including your insulation. To minimize any potential health risks we recommend having your dirty attic insulation removed and your attic cleaned and sanitized by our insulation experts!

If there have been any water leaks this will make your attic insulation, and once the insulation is wet it is a poor insulator. Wet insulation can become moldy and transfer moisture to the adjacent framing and building materials, which will spread mold growth and deteriorate the integrity of your home’s framing materials. 

When repairing sections of insulation it may not be put back into place properly. As a result, you may notice areas that are not sufficiently insulated. If you notice that the temperature inside your home fluctuates more than it should, it could be an indication that your insulation has been shifted or compromised. As a result, your HVAC system will have to work harder to heat or cool your home, which raises your energy bill cost. 

We’ve helped thousands of homeowners With Their Attic And Crawl Spaces

Eff W


“Contracting with Insulation Co. is one of the best decisions I have made! I received five bids for French drain/sump pump. I went with Jo because 1) he was very patient with answering all of my questions. 2) he never pressured me like some of the others. 3) his price was the most reasonable and he didn’t even have to physically come to my property to inspect and give an estimate 4.) he responded very quickly 5.) he was respectful and professional. His team came on time and worked over time to get the job done on the same day. They even took the extra time (w/o my asking) to make the entry plate to my crawl space look more appealing and secure. The lead, Rafael was very personable, friendly, knowledgeable, and you can tell he takes his job seriously and with pride. I highly recommend this company and I plan on hiring this company again to do my attic/crawl space cleaning.”

Anna Mascarenas

Local Guide


“I will never use anyone else for future insulation needs. The three teams that came to our home to insulate the crawl space, walls and attic were amazing. They were respectful, quick and quiet they finished our 1200 sqft home in about 5 hours. The owner, Jo, communicated our needs very well. The original plan to remove siding and go underneath to insulate the walls didn’t work. The lead relayed the issue and offered a solution that worked perfectly and we’ve already had to lower our thermostat. If you are looking for a company that is responsive, quick and reasonably priced for the quality of work I highly recommend them! Thank you all so much for doing such an amazing job!”

Gil Leighton


“I hired the Insulation Co and it was the right choice. First let me say if you need crawl space services I whole heartedly recommend this company. The owner Jo, was so responsive, he listened to my needs and concerns, and every time I reached out to him prior to the work being done and even after it was done, he was so quick to respond. I will also add, Jo was very patient with my many questions.
I needed the crawl space cleaned, sealed, and new heating ducts installed. This was a very difficult job as the crawl space has very low clearances. They did so many things like disinfecting, wrapping the plumbing, sealing the new ducting, sealing the crawl space from outside intruders. Very thorough!!!
I cannot say enough good about the job the crew did, 4 folks the first day and 3 the second day. Raphael was the team lead and he was great to work with, he listened to the concerns that I had and kept me updated throughout the two day job. Raphael, would show me pictures when I had questions about things under the house. He was awesome to work with.
My crawl space entry is in a small clothes closet in a carpeted room and this was a dirty job but you would not even know they had been here. They protected the carpet as well as our teak hardwoods that lead to the entry of the house. Outside was the same, no debris at all.
Highly recommended!”

why work with us?

over 25 years experience

Serving Seattle for 25+ years with expertise and professionalism. Our experienced team, led by founder Jo, has been dedicated to delivering quality craftsmanship and friendly customer service to all his customers for almost two decades.

10-year warranty on insulation workmanship

All of our work is backed by a 10-year transferable warranty on insulation workmanship and a 2-year transferable warranty on mold remediation, sump pump, and French drain install workmanship (if applicable to the bid scope of work). Included in our warranty is one free complimentary courtesy check.

insured, bonded, and licensed

Providing licensed, bonded, and insured services for your insulation needs. Trust our expertise and commitment to quality work. It is important to choose a contractor who is licensed, bonded, and insured because this ensures we know how to do our job properly and can protect ourselves against any potential mistakes.

owner run company

Owning a business can be tough, but also incredibly rewarding. Experience the advantage of talking directly to the owner of our business, Jo, who started installing insulation at the young age of 10. Jo, the founder of the company, has firsthand experience in the insulation industry since childhood.

5 star customer reviews

Experience a customer-focused company that prioritizes your wants and needs. Customer interactions are our primary means of creating true customer relationships and building our brand.

free same-day estimates

Providing customers with fast, free, virtual, and same-day quotes will give you a starting point for your home improvement project.

insulation co. service areas

  • Seattle
  • Bellevue
  • Kirkland
  • Renton
  • Everett
  • Federal Way
  • Auburn
  • Kent
  • Mercer Island
  • Bainbridge
  • Redmond
  • Bothell
  • Newcastle
  • Shoreline
  • Lake Forest Park
  • Tukwila
  • Des Moines
  • Issaquah
  • White Center
  • Kenmore
  • Edmonds
  • Mountlake Terrace
  • Lynnwood
  • Sammamish
  • Snoqualmie
  • North Bend
  • Lake Stevens
  • Woodinville
  • Mukilteo
  • Bellingham
  • Mount Vernon
  • Burlington
  • Lynden
  • Blaine
  • Birch Bay
  • Custer
  • Ferndale
  • Chuckanut
  • Lummi Island
  • Orcas Island
  • Oak Harbor
  • Everson
  • Alger
  • Nooksack
  • Marietta
  • Sedro Wolley
  • Anacortes
  • La Conner
  • Stanwood
  • Arlington

Seattle Attic Insulation Removal & Installation

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