Is Expanding Foam Flammable? [Solved]
Hello, iam Jerome Hicks, Don’t worry, it’s one day closer to the weekend. Is Expanding Foam Flammable? [Solved] Expanding foam is used in DIY to fix and fill holes and gaps. The propellant gas used to dispense the foam (methylene-diphenyl-diisocyanate 4,4) is highly flammable. The gas is emitted from the foam as it expands and dries out. It is heavier than air, sinks and forms an invisible cloud.5 Dec 2019...