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Spray Foam Insulation Services Contractor in Seattle

Closed cell spray foam is a highly effective insulation material that can help to improve the energy efficiency and comfort of a building. It is particularly useful in applications where a high R-value and an air and moisture barrier are needed, such as in crawl spaces, attics, and walls.

what is closed cell spray foam?

Closed-cell spray foam is a type of insulation material that is commonly used in residential and commercial buildings. It is made by mixing two chemicals together, which react to create a foam that expands and hardens. The resulting foam is a closed-cell structure, which means that the cells are closed off from each other, creating a barrier that prevents air and moisture from passing through. This gives closed cell spray foam a high level of insulation, making it an effective way to reduce energy bills and improve indoor comfort.

Unlock the potential of closed cell spray foam insulation

structural enhancement

Closed-cell spray foam is a higher-density foam, which makes it more rigid. The rigidity allows closed-cell foam to support structures already in place. Closed cell foam won’t keep a dilapidated structure from collapsing. But it can reinforce the support that is already in place. 

below-grade capabilities

Closed-cell spray foam can be used in your basement or crawl space. Closed-cell spray foam is approved for below-grade applications because of its density, rigidity, and potential for a vapor barrier.  

air barrier

Another benefit of closed cell spray foam is its ability to act as an air and moisture barrier. Because the cells are closed off from each other, the foam creates an airtight and watertight seal, preventing air and moisture from passing through. This can help to improve indoor air quality and prevent mold and mildew growth.


Closed cell spray foam is applied using a spray gun, which allows it to be applied to irregularly shaped surfaces, such as walls, floors, and ceilings. Once applied, the foam expands and hardens, creating a seamless layer of insulation that conforms to the shape of the surface.

high performance

Closed cell spray foam is its high R-value, which is a measure of its thermal resistance. Closed cell spray foam has one of the highest R-values of any insulation material, making it an effective way to reduce heat loss and gain in a building.

closed cell spray foam vs open cell spray foam

Open-cell and closed-cell foam are two different types of spray foam. They have different strengths and weaknesses.

Open-cell foam characterized by its numerous cells that are intentionally left open, offers a unique set of properties. This design choice results in a softer and more flexible material, making it ideal for certain applications. 

Closed cell foam is made up of cells that are completely closed. The cells are pressed together, so air and moisture are unable to get inside the foam. Because of this, closed-cell foam is much more rigid and stable than open-cell spray foam. Closed-cell foam is much denser than open-cell spray foam. Most of the open-cell foam has a density of about .5 pounds per cubic foot. Closed-cell spray foam can be over three times that, with a density of 1.75 pounds per cubic foot or more. 

What are the benefits of closed-cell spray foam?

Closed cell spray foam is rigid in nature and adds to the structural integrity of buildings, the closed cell also acts as a vapor barrier so that water and moisture will be less likely to get inside the home, and the foam itself is unharmed by water damage. 

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.

Attic & Crawl Space Spray Foam Insulation Services Contractor

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