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What Is Spray Foam Insulation?

Spray foam insulation is a type of insulation that starts as a liquid and then expands to fill the space it is sprayed into. It is created by combining two chemicals, polyol resin and isocyanate, which react to produce a foam that sticks to surfaces and expands to fill gaps and cracks. There are two main types of spray foam insulation: open-cell and closed-cell. Open-cell spray foam insulation is less dense and has a spongy texture, while closed-cell spray foam insulation is more dense and has a harder texture. Closed-cell spray foam insulation has a higher R-value per inch than open-cell spray foam insulation, making it a better insulator per inch of thickness. Closed-cell spray foam insulation is more water-resistant than open-cell spray foam insulation, making it a better option for areas that are prone to moisture. Due to its higher density and superior insulation properties, closed-cell spray foam insulation is typically more expensive than open-cell spray foam insulation.

What Are The Benefits Of Spray Foam Insulation?

  • Provides superior insulation compared to traditional insulation methods, as it seals all gaps and crevices where air can escape.
  • Helps to reduce energy bills, as it keeps the home well-insulated and reduces the need for heating and cooling
  • Improves indoor air quality by blocking out moisture and reducing the growth of mold and other allergens
  • Can help to increase the overall value of the home, as it is a long-lasting and durable insulation solution
  • Can help to reduce noise levels from outside, as it provides a sound barrier to block out unwanted noise.
  • Spray foam insulation is versatile and can be used in a variety of applications, including attic insulation, wall insulation, and crawl space insulation.
Foam Insulation

Where Is Spray Foam Insulation Applied?

Spray foam insulation has multiple applications within a home. The most suitable areas for spray foam insulation include the attic, interior and exterior walls, and basement. Moreover, it can be used to seal air leaks and deter insects from entering homes during extreme weather conditions. This is especially important in priority areas such as the attic, basement, and home exterior. Furthermore, spray foam insulation is versatile and can be used to fill gaps in walls, crevices, and around windows and doors.

Acoustic Performance

Spray foam insulation is effective in reducing sound transmission through walls, ceilings, and floors. By filling gaps and cavities, it creates an airtight seal that limits the amount of noise that can pass through. The acoustic performance varies based on the type of foam, application thickness, and building construction.

Open-cell spray foam insulation has a lower density than closed-cell spray foam insulation, making it better at absorbing sound. Closed-cell spray foam insulation, however, is denser and more effective at blocking sound transmission.

It’s worth noting that spray foam insulation may not be the best option for every situation. The thickness of walls and the type of construction can also impact acoustic performance. Consulting a professional insulation contractor can help determine the ideal solution for a specific building and its acoustic needs.

Health Impact

Spray foam insulation can be hazardous to health if it is not installed or handled appropriately. The chemicals used in spray foam insulation, like isocyanates, may cause skin, eye, and lung irritation, asthma, and sensitization. Exposure to these chemicals may occur during installation or after installation, during remodeling or demolition, if the foam is not fully cured or disturbed in some way.

Some types of insulation can also include toxic chemical flame retardants, formaldehyde, and volatile organic compounds (VOCs), which can also pose health risks.

To prevent potential health risks related to spray foam insulation, it is essential to collaborate with an insulation contractor who is professionally trained in safe installation and handling of spray foam insulation, and to ensure that the area is well-ventilated during and after installation. Homeowners should also be aware of the potential health effects and safe handling procedures for chemicals used in spray foam insulation.

Although spray foam insulation can be an effective insulation option, it is necessary to take the necessary precautions to minimize the potential health risks associated with its installation and use.

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Making sure our customers have all the information they need to make the best decision for their home or business is important to us! Please reach out with any questions about Insulation First's services. offer various professional services from Radiant barrier to turbine installation. We are professional, certified and trained in what we do. We are located in Dallas, Tx but service areas all over the DFW metroplex in Texas such as: 




Fort Worth,

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