Spray Foam vs Fiberglass for Bellevue Attics: Choosing the Best Insulation

By Expert at CoreShell Homeworks 1/5/2026
When it comes to insulating your attic in Bellevue, you have several options to choose from. Two of the most popular choices are spray foam and fiberglass. At CoreShell Homeworks, we've helped numerous homeowners make informed decisions about their insulation needs. Our team offers a range of insulation services, including attic insulation, soundproof insulation, and double bubble insulation. We serve homeowners in Bellevue and surrounding areas, including Beaux Arts Village, Sammamish, and Medina. Contact us today at (425) 400-5934 to schedule a consultation and take the first step towards a more energy-efficient home.

When it comes to insulating your attic in Bellevue, you have several options to choose from. Two of the most popular choices are spray foam and fiberglass. At CoreShell Homeworks, we've helped numerous homeowners in Bellevue and surrounding areas, including Beaux Arts Village and Sammamish, make informed decisions about their insulation needs.

What is Spray Foam Insulation?

Spray foam insulation is a type of insulation that is applied in a liquid form and expands to fill gaps and cracks. It provides excellent thermal insulation and can help reduce energy bills. For more information on the benefits of spray foam insulation, check out our blog post on Best Spray Foam Insulation in Bellevue Homes. We also offer attic insulation services, which include spray foam insulation, to help keep your home warm in the winter and cool in the summer.

What is Fiberglass Insulation?

Fiberglass insulation, on the other hand, is a type of insulation made from glass fibers. It is commonly used in attics and walls and is known for its affordability and ease of installation. However, it may not provide the same level of thermal insulation as spray foam. If you're looking for alternative insulation options, we also offer soundproof insulation and double bubble insulation services.

Comparison of Spray Foam and Fiberglass Insulation

Here are some key differences between spray foam and fiberglass insulation:

  • Energy efficiency: Spray foam insulation is generally more energy-efficient than fiberglass insulation.
  • Cost: Fiberglass insulation is often less expensive than spray foam insulation.
  • Installation: Spray foam insulation requires specialized equipment and training, while fiberglass insulation can be installed by a DIY homeowner.
For homeowners in Medina and Renton, it's essential to consider the specific needs of your home when choosing between spray foam and fiberglass insulation. Our team at CoreShell Homeworks can help you make an informed decision.

Why Choose CoreShell Homeworks for Your Insulation Needs?

At CoreShell Homeworks, we have years of experience providing top-quality insulation services to homeowners in Bellevue and surrounding areas, including Clyde Hill. We offer a range of insulation services, including foil insulation and ceiling insulation. Our team is dedicated to providing excellent customer service and ensuring that your home is warm, comfortable, and energy-efficient. Check out our blog post on Top Signs for Insulation Contractor in Bellevue to learn more about the importance of proper insulation. For winter insulation upgrades, read our blog post on Winter Insulation Upgrades for Bellevue Homes.

If you're looking for a reliable and experienced insulation contractor in Bellevue, look no further than CoreShell Homeworks. Contact us today at (425) 400-5934 to schedule a consultation and take the first step towards a more energy-efficient home.

Need Professional insulation contractor Services?

Contact CoreShell Homeworks today for expert insulation contractor services in Bellevue.

Call (425) 400-5934