It is not clear how much time is needed before it is safe for unprotected workers or building occupants to re enter.
Spray foam insulation safety precautions.
Only workers wearing appropriate personal protective equipment ppe should be present during spray polyurethane foam spf installation.
However certain factors impact curing rate s which may lead to unreacted chemicals potentially off gassing over time.
In addition spf chemicals may migrate and contaminate other surfaces in a building.
However exposure to the chemical components that react to make spf can pose serious health risks.
Spray foam that is correctly applied and allowed to fully cure is typically considered relatively inert chemically inactive.
Spray foam installers must wear protective gear while spraying.
And residents are asked to leave the premises for at least 24 hours during and after spray foam installation.
Take appropriate precautions to avoid high heat or flame near the application site including having all workers avoid smoking on the job site.
Proper storage handling and disposal practices.
Is responsible for cleaning the work site thoroughly so unprotected workers or occupants can safely occupy the building.
All persons and house pets must vacate premises during application 2.