Everything You Need to Know About Spray Foam Off-Gassing

spray foam insulation | RetroFoam insulation | foam university

By: Eric Garcia on May 29th, 2024

When considering foam insulation for your home, one critical topic that often comes up is off-gassing and the release of volatile organic compounds (VOCs).

But what exactly are these terms, and why should you care?

Off-gassing occurs when gases escape from solids or liquids, typically during a change in state or due to agitation. VOCs, on the other hand, are the gases that escape. Due to their potential health impacts, VOCs can sound quite menacing.

Dramatic tales of lingering odors and potential health risks often highlight this concern. Much of this worry stems from outdated information or mishandled applications.

It’s important to note that VOCs are not always harmful. They are a natural part of our environment, and we’re surrounded by them at safe levels daily. The real concern with VOCs in building materials, including foam insulation, revolves around their concentration and the duration of exposure.

What are Volatile Organic Compounds?

The U.S. Environmental Protection Agency defines volatile organic compounds as chemicals with a high vapor pressure at ordinary room temperature.

In the context of spray foam, these compounds are emitted as gases from the foam as it cures. Modern manufacturing processes have significantly reduced the risks associated with VOCs, making most spray foam products safer for residential use, but we’ll dive more into that in a moment.

Let’s talk about RetroFoam insulation and whether off-gassing is a concern with this injection foam.

Is RetroFoam Safe?

RetroFoam insulation is non-toxic and doesn’t off-gas.

What does this mean for you as a homeowner? Simply put, when RetroFoam is installed in your home, no VOCs are released, ensuring a safe indoor air quality environment.

It is a common misconception that injection foam is the same as spray foam insulation. While they are both great for sealing the building envelope, they are different materials.

RetroFoam’s unique formulation and installation process ensures that no harmful gases are released post-installation. This is a significant advantage, especially when compared to other insulation materials that can emit VOCs for days or even weeks after application.

Now, let’s talk a little bit more about spray foam off-gassing.

How Long Does Spray Foam Insulation Off-Gas?

The duration of off-gassing in spray foam insulation can vary significantly depending on the product's VOC content.

For low-VOC spray foam products, the re-occupancy time—when it is safe to return to the space—can be immediate or as short as two to four hours after installation, depending on the manufacturer.

On the other hand, products with higher VOC levels require a re-occupancy period ranging from 24 to 48 hours. This variation underscores the importance of understanding the products your contractor plans to use.

Dealing with Odors from Off-Gassing

The smell associated with off-gassing can be concerning for many homeowners.

To mitigate this, experienced contractors often use industrial fans to ventilate the area during and after the application of spray foam. This strategy helps reduce the intensity and duration of unpleasant odors, ensuring that the home returns to normal more quickly.

Is Spray Foam Insulation Dangerous?

Generally, spray foam insulation is safe and effective.

Spray foam becomes a concern only when higher levels of VOCs are present, which can lead to enhanced off-gassing.

While these emissions are not typically dangerous or life-threatening, they can be bothersome, particularly for individuals with respiratory conditions or sensitivities to smells.

What are the Real Dangers of Spray Foam Insulation?

While spray foam is generally safe, there are scenarios where it might pose health risks, especially for those with pre-existing respiratory conditions.

These risks are primarily associated with excessive off-gassing from lower-quality products. It’s crucial to recognize that, like many other household items, spray foam is just one of several potential sources of indoor air pollution.

Choosing the Safest Foam Insulation for Your Home

RetroFoam insulation is safe in your home because it doesn’t off-gas and is non-toxic.

When selecting a spray foam product to complement the injection foam insulation, two key factors should guide your decision: the re-occupancy time and whether the product is low-VOC.

It’s essential to find an experienced spray foam contractor who is transparent about the products they use and their associated VOC levels. This open communication helps ensure that the chosen insulation meets both your comfort and health standards.

If you’re ready to speak with a foam insulation expert in your area, visit our website's Dealer Finder page.

What is the Difference Between RetroFoam Injection Foam and Spray Foam Insulation?

Is RetroFoam Safe to Have in Your Home?

The Truth Behind the RetroFoam Canada Lawsuit and Formaldehyde

About Eric Garcia

Eric brings his knowledge and training in building science, training in spray and injection foams from the manufacturers, more than eight years installing foam insulation, as well as selling and managing in the foam insulation industry. He is also BPI and Dale Carnegie certified and has taken several building science courses, including air sealing and building envelope. Eric is the Professor of Foam on our educational YouTube series Foam University. Even when Eric is off he is usually still “working” or thinking about work, but when he can get away he enjoys camping, hiking, hunting, and woodworking.