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Insulation job for a residential contractor

We are: Licensed, Bond and Liability Insured 

Xtra-Therm Insulation

We take pride in serving the Whatcom, Skagit, Island, Snohomish and King Counties since 2016 with over 24 years of experience in the industry. We are a local family based business ready to serve your residential needs.

A Local Expert Committed to Excellence

About Us

Xtra-Therm Insulation LLC is locally owned and operated by people who understand the importance of your home. 

We have worked in the insulation industry for more than 24 years. In those years we have learned the importance of our work and how it helps keep your home at the desirable temperatures during all seasons. 

We do each job with our customers in mind. Xtra-Therm Insulation LLC is a company you can depend on. We are responsible and efficient. We work with honesty and integrity. 

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With many years of experience at various insulation companies, we know how important high quality and workmanship are. Since starting our insulation company, we’ve given each project we work on the personalized attention it deserves. We’ve worked together with our clients and managed to achieve great results while staying within budget. As a leading Insulation Contractor in Northwest Washington, we take great pride in our work. Check out our previous projects below and get in touch for a free quote.

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Exterior wall insulation installation to keep house warm.

Exterior Walls

We want your home to be able to retain all the heat as possible, so we are devoted to properly sealing the whole house with foam on penetrations where insulation batts aren't able to reach. We then caulk the exterior bottom plate and corners. Every window gets sealed with backer rod. We insure there are no air leaks into the house.


After the air seal is complete, we insulate the exterior walls. When we install the insulation, we make sure that there is insulation in front as well as behind the electrical boxes, wires, and pipes without leaving any gaps. Our high quality is appreciated by our customers.

Ceiling batt insulation

Ceiling Batts

While installing batt insulation on the ceilings, we are sure to leave the proper areas open for air flow without leaving any gaps between the framing and insulation. When applying multiply batts to achieve the necessary thickness, our quality insures their won't be any gaps between the batts.

Blow insulation application in attic to prevent the heat from escaping your home.

Blow Insulation

With blow, just as everything else, quality is of our highest service to  you as we seal the attic with foam. We insure that the correct R-Value per county code is applied while leaving a high quality appearance.

Contact Us For A Free Estimate

Thank you for contacting Xtra-Therm Insulation. We will be contacting you soon.

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