Why must I leave my home for 24 hours after spray foam is installed?

Posted on: December 9, 2016

Spray polyurethane foam, commonly referred to as just spray foam, needs time to set and cure after being applied. During the spraying and setting period, the product releases chemicals into the air that could be harmful if breathed. The chemicals leave the home naturally, but professional installers will advise that you and your pets vacate the home for at least 24 hours to be safe.

Afterward, some people may notice that odours persist for a short time, which is natural, should not be harmful, and should subside. If you notice a smell, it is always best to discuss with the installer.

The health risks of spray foam are all related to its application, which is why only professionals with appropriate personal protective equipment should be present for its installation and in the home for the first 24 hours after installation. Spray foam must be installed at a rate that allows the product to properly cure and release any harmful chemicals immediately. The home should be well ventilated during that period to help speed-up this process. You do not need to worry about spray foam impacting your health as long as you and the installer follow these well-defined industry protocols.

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