Spray Foam Insulation

Benefits and Types of Spray Foam Insulation

Spray foam insulation is a two-in-one home insulation and air sealing product that can help homes and businesses increase comfort and reduce energy consumption. Spray foam insulation expands when applied. While fiberglass insulation can be combined with air sealing, spray foam insulation achieves both with one step.


Spray foam insulation has a variety of benefits for a homeowner:

  • Increased Comfort: Spray foam insulation prevents drafts, improves air quality and enhances acoustics.
  • Energy and Cost Savings: Spray foam insulation can reduce monthly energy costs by 30% to 50%.
  • Reduced Outside Air Infiltration: Spray foam insulation seals the home from air movement, helping to reduce pollen, dust and allergens.
  • Durability to Last a Lifetime: Once applied, spray foam insulation will not shrink, sag or settle – even if it comes into contact with water. Spray foam insulation sticks to a wide variety of materials including masonry, cement, metal studs, wood studs and rooflines. Spray foam insulation can even be used to insulate garage doors!

Types of Spray Foam Insulation

There are two different types of spray foam insulation: Open Cell Spray Foam and Closed Cell Spray Foam. They each have unique benefits.

Open Cell Spray Foam Insulation

Open cell spray foam insulation works as an insulator and air barrier. Weighing only 0.5 pounds per cubic foot, open cell spray foam gets its name from its broken cell structure, This allows air to fill the empty space inside the material. The typical R-value of open cell foam is 3.7 per inch. Open cell spray foam insulation is vapor permeable, dampens sounds and eliminates air infiltration.

Closed Cell Spray Foam

Like open cell spray foam insulation, closed cell spray foam works as an insulator and air barrier. Closed cell spray foam is solid and more dense than open cell spray foam. The cells of the bubbles remain intact, which makes the material rigid. The closed cell composition and increased density contribute to a higher R-value than that of open cell spray foam. Higher density allows closed cell spray foam to contribute to building stability during storms and high winds.

Spray foam provides both an air sealing and insulating solution and is built to endure more severe weather conditions than fiberglass insulation. The investment is worth every penny. While spray foam is commonly thought of for new construction, spray foam insulation can be installed in existing homes.

Foster Insulation has years of experience expertly installing spray foam insulation. Contact our office to schedule your free estimate and learn how spray foam can benefit your next project!