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Don't compromise on quality for your attic and crawl space services

Looking for certified professionals to take care of your attic and crawl space services? We’ve got you covered! Our team of experts will ensure that you get the peace of mind you deserve. With our top-notch services, you can rest assured that your home is in good hands. Insulation Co. LLC is the go-to provider for all your attic and crawl space needs. With our team of highly trained and certified crews, you can rest assured that you’re receiving the best possible services. We pride ourselves on staying ahead of the curve and utilizing the latest techniques and equipment to get the job done right the first time. When you choose us, you’re choosing a company that is dedicated to excellence and customer satisfaction. Don’t settle for less than the best – choose Insulation Co. LLC for all your insulation, air sealing, and moisture control needs.. Contact us today to schedule a free consultation!



You are not required to be mold certified in Washington state but the health and safety of our customers and crew members is our top priority. Becoming a certified mold specialist and completing the 40-hour training gave us education in the principles, techniques, equipment, and regulations relevant to Mold Remediation, Water Intrusion, and Respiratory Protection. To view our certification, visit the link provided. Jo Estrada – IRI (iriedu.com) Link to certification


Cole & Associates Training Renton, WA Insulation Co. is firm-certified and able to conduct renovation work on any home built before 1978. This training provides pre-renovation education requirements as well as training, firm certification, and work practice requirements.


BPC (Building Performance Center Bellingham, WA) As an insulation contractor, Combustion Safety Testing is not required. However, it is important to be trained for any case scenario. This testing is usually done by your HVAC company and is only done in homes with natural gas once a year or if you suspect any gas leaks. We are certified in CAZ testing, but this is not something that we include in our services unless specified.


BPC (Building Performance Center Bellingham, WA) The comfort of your home relies heavily on how well your home's building envelope is air-sealed.  With the training and knowledge from the Blower Door &Pressure Diagnostic course, our crew can perform a before and after blower door diagnostic to test how well your home is air-sealed and provide you with solutions on how to make your home more airtight and energy-efficient. Blower door testing is now required in all new construction homes; however, any home is a candidate for testing. If your home energy bills seem high and you don’t know why, performing a blower door test could be beneficial.


BPI (The Building Performance Institute) Energy-efficient home performance is becoming more popular with homeowners and buyers. With this certification, we were able to gain knowledge on how to identify potential building performance problems. This certification demonstrates our education in residential energy efficiency and the importance of house-as-a-system building science. Insulation has become a science and understanding the way that your home flows is an important part of insulation services. Understanding the relationship between the building envelope, heating, A/C, insulation, mechanical ventilation, lighting, appliances, and other systems in your home will enable us to assist our customers in making their homes more energy-efficient. With these improvements, your home's energy efficiency is the first step towards solar, geothermal, or other renewable energy improvements.


ClickSafety Online Course Workplace safety is important to Insulation Co. which is why we received certification in the OSHA Safety Training Program. This program provides workers with basic and more advanced training about common safety and health hazards on the job. This course educated our workers on workplace safety and health and made our workers more knowledgeable about their rights.


LifeTek, Inc Mount Vernon, WA 98273 Our company wants our employees to be trained in more than just insulation services. CPR is important because, in case of an emergency, it can help save lives. CPR makes any work environment safer. Every minute counts in an emergency and CPR is a low-cost and easy certification to complete that could make all the difference.


The Center for the Polyurethanes Industry of the American Chemistry Council Online Course

Trust us to get the job done right!

Are you in need of attic and crawl space services but are unsure of where to turn for reliable and trustworthy professionals? Look no further than our certified team! Our team is dedicated to providing you with peace of mind and ensuring that every job is done right the first time. We understand that your home is your sanctuary and that you want to ensure it is a safe and comfortable environment for you and your loved ones. This is why we take great pride in our qualifications and expertise in attic and crawl space services. We are committed to using the latest and most effective techniques to provide you with the best results possible. When you choose our team for your attic and crawl space needs, you can rest assured that you are in good hands. Our professionals are highly trained and experienced in the industry and have the knowledge and skills necessary to tackle any job, no matter how complex. Let us help you create a healthy and comfortable living environment that you and your family can enjoy for years to come.

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.

Expert attic and crawl space services backed by our team's certifications

Insulation Co. LLC is a trusted provider of attic and crawl space services. Their team comprises highly trained and certified crews who are committed to delivering exceptional services to their customers. They use the latest techniques and equipment to ensure that every job is completed to the highest standards of quality and safety. Whether you need insulation installation, air sealing, or moisture control services, you can trust Insulation Co. LLC to get the job done right. Their experts are always up-to-date on the latest industry trends and best practices, so you can be sure that you’re receiving the best possible service

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