Spray foam insulation is a high-performance insulation solution designed to seal gaps, cracks, and cavities within a building’s envelope. It is created by combining two chemical components—polyol resin and isocyanate—which react upon application and expand into a foam that firmly adheres to surrounding surfaces.

This insulation method is commonly used in attics, walls, and crawl spaces, where it delivers both thermal insulation and effective air sealing. By reducing air leakage, spray foam insulation helps improve energy efficiency, enhance indoor comfort, and support better indoor air quality. Spray foam insulation is available in two main types: open-cell and closed-cell.

Open-cell spray foam has a lower density and remains flexible after curing. It is often used in interior walls and ceilings and is particularly effective for sound control and interior insulation applications. Closed-cell spray foam, on the other hand, has a higher density and a more rigid structure. It is well suited for exterior walls, roofs, and crawl spaces, offering superior resistance to air and moisture infiltration.

Spray foam insulation is applied using specialized spraying equipment that distributes the material evenly across targeted surfaces. As it expands, the foam fills even the smallest gaps and cracks, creating a continuous, airtight barrier that minimizes heat loss and air movement. It also acts as a moisture barrier, helping to reduce the risk of mold growth.

One of the key advantages of spray foam insulation is its exceptional insulating and air-sealing performance compared to traditional insulation options. When properly installed, it can significantly reduce energy consumption and contribute to long-term cost savings. Spray foam insulation is also durable, with a long service life and minimal maintenance requirements.

While spray foam insulation typically involves a higher upfront investment than materials like batt insulation, its performance benefits often outweigh the initial cost. Because installation requires specialized equipment and technical expertise, it should always be performed by trained professionals to ensure safety and optimal results.

Overall, spray foam insulation is a reliable and efficient solution for enhancing thermal performance and air tightness in residential and commercial buildings. Available in both open-cell and closed-cell options, it offers long-term energy savings, improved comfort, and lasting durability when professionally installed.