Fills the Smallest Spaces
The foam expands into every gap, stopping air from escaping and keeping temperatures consistent.
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Cascadia Spray Foam of Seattle installs open-cell spray foam insulation for homes and businesses in Seattle, WA, and the surrounding areas.
We help property owners in Seattle, Bellevue, Redmond and nearby communities gain energy efficiency, comfort and moisture control, whether we’re insulating an attic or a whole building.
Open-cell spray foam is one of the most effective ways to insulate homes and commercial buildings in the Seattle area. Its open-cell structure gives excellent air sealing, which reduces drafts and keeps indoor temperatures consistent all year.
The foam is lightweight and flexible, and it expands to fill every gap and crack so no air leaks are left behind. That cuts utility costs and makes for a more comfortable indoor environment. Our installers handle every detail with care, so the foam performs well for years to come.
Open-cell foam is often the preferred choice for attics, where heat loss drives up heating costs through Seattle’s colder months.
The foam expands into every gap, stopping air from escaping and keeping temperatures consistent.
Open-cell roof insulation helps protect your property from unwanted dampness and mold.
Its flexibility lets it adjust to the natural movement of the roof structure, so it keeps performing.
The softer structure absorbs noise, which makes it a good fit for interior walls.
Its lower density suits residential walls and attics.
Open-cell foam usually costs less than closed-cell, which makes it an affordable upgrade.
Both types of foam have their benefits. Open-cell foam suits jobs where flexibility, breathability and cost matter most, while closed-cell foam gives a higher R-value and acts as a moisture barrier where water resistance is needed too.
| Factor | Open-cell foam | Closed-cell foam |
|---|---|---|
| R-value per inch | About 3.5 to 3.7 | About 6 to 7 |
| Density | Lower, soft and flexible | Higher, rigid and strong |
| Moisture | Breathable air seal | Moisture barrier |
| Cost | Lower | Higher |
| Best for | Attics, walls and sound control | Exteriors, foundations and damp areas |
The right choice comes down to the needs of your property, and we’re here to help you make it.
Book a personalized consultation and get answers to any questions about open-cell spray foam.
Open-cell foam often costs less than closed-cell, and the savings on your energy bills help offset it over time. As an effective air barrier, it lowers heating and cooling costs, which makes it a smart investment for many Seattle homeowners.
We price our work transparently and work closely with each client to find a solution that fits their needs and budget.
Typically about R-3.5 to R-3.7 per inch.
Costs vary with the size of the project, but open-cell foam is generally more affordable than closed-cell insulation.
Yes. It fills even the smallest spaces, seals out air and helps prevent heat loss through the roof.
Yes. Its softer structure helps reduce noise, which is why it works well in interior walls and other areas that need sound control.
Closed-cell foam is better where you need a higher R-value per inch and a moisture barrier, such as exteriors, foundations and damp areas.
We use quality materials, install with care and focus on your satisfaction, with transparent pricing from the start.
Request a quote for open-cell spray foam in Seattle, WA, and surrounding areas. Contact Cascadia Spray Foam of Seattle to schedule an appointment.