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Insulation Co. LLC is proud to be one of Western Washington's leading specialists in insulation removal, insulation installation, mold remediation, sump pump installation, air sealing, and duct insulation. We take pride in our reputation for delivering exceptional services, and we strive to maintain the highest standards in all aspects of our work. If you have an insulation or mold remediation project, talk to us today, and let us help you achieve your goals. We understand that to maximize value for money for your insulation service project or mold removal, you require high-quality workmanship, people with experience in techniques, procedures, and materials, and total professionalism when it comes to hitting project deadlines on time and on budget. Talk to us about your next insulation project or mold remediation project today.


We are a family-owned and operated company that has been providing exceptional insulation services and mold remediation services for over twenty years. We take pride in our ability to match and exceed our customers' expectations, whether they have large or small projects. We are proud to have a diverse customer base that ranges from retrofit homes to new construction projects, and we have a proven track record of delivering exceptional services in every aspect of insulation and mold remediation. Our services extend to Seattle, Bellevue, Everett, and other areas across Western Washington State.


At Insulation Co. LLC, we are a team of professionals who are passionate about providing the best insulation services to our customers. Our mission is to not only deliver high-quality services but also to ensure that we exceed our customers' expectations with exceptional customer service. Insulation is crucial in enhancing energy efficiency and comfort in homes and businesses. Therefore, we are dedicated to helping our customers achieve these benefits while minimizing our environmental impact. At Insulation Co. LLC, we understand that every project is unique, and that's why we take the time to analyze each project's specific requirements to recommend the best solutions. Our team is dedicated to delivering high-quality services that exceed our customers' expectations. We work closely with our customers to ensure that we deliver the results they desire, on time and within budget.

Why Choose Insulation Co. LLC for Your seattle washington services

over 25 years experience

Insulation Co. – 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. All of our team members have over ten years of experience in the industry and are fully trained and certified.  Your trusted partner in Seattle for insulation solutions. Trust our experienced team for all your insulation needs.Contact us today for expert service and friendly assistance.

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. Unlike other companies, there does not have to be anything wrong for us to come and inspect your attic and crawl space. We encourage customers to schedule their courtesy check a year after the work is done to put their minds at ease that everything is still in tip-top shape.

insured, bonded, and licensed

Insulation Co. – 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. We also know this will offer a sense of security to our customers. Having worker’s compensation and liability insurance for our employees means we are allowed to get and sign building permits if necessary. 

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. Gain a unique advantage by connecting with Jo, the owner of our business. Benefit from firsthand experience and expert knowledge in the insulation industry! Get a free estimate and virtual consultation now!

free same-day estimates

Get fast, free, virtual, and same-day quotes for your home improvement project. We understand that this is not a cheap service. Providing customers with fast, free, virtual, and same-day quotes will give you a starting point for your home improvement project. Included in your free estimate is a virtual consultation to discuss the project and answer any questions you may have. Start your home improvement project with ease!

5 star customer reviews

Experience a customer-focused company that prioritizes your wants and needs. Our goal is to make a customer and not a sale. Some businesses are too focused on making sales but don’t pay enough attention to satisfying the customers’ wants and needs. Customer reviews are a reflection of our customer’s experience with our company and services. Customer interactions are our primary means to create true customer relationships to build our brand. 


We’ve helped thousands of customers attics and crawl spaces


Specializing in attic and crawl space services

Need help with attic and crawl space cleaning, insulation removal and replacement, mold removal, or sump pump services? Trust us for all your attic and crawl space cleaning, insulation removal and replacement, mold removal, and sump pump needs. Contact us now for a free consultation.

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