Acetone is a solvent that dissolves uncured polyurethane foam and can be used to clean up foam before it cures. Acetone-based nail polish remover will also work to remove uncured foam. Unfortunately, these products don’t have any effect on cured foam. Once it cures, you’ll have to scrape or sand off unwanted foam. How do you remove green algae from plastic? how to remove algae from plastic container.

How do you remove Great Stuff foam insulation?

Once Great Stuff foam hardens, it can only be removed via abrasive means (such as sandpaper). Water causes it to harden. Before it hardens, it can be removed with acetone. Be careful with acetone because it toxic (You can find a copy of the acetone MSDS online for details on its safety).

How do you remove dry Great stuff?

You can use raw acetone to work with or use the nail polish remover that comes along with acetone. Rub off the area using the acetone and cotton ball. Then wash the area with mild hand-washing soap and warm water. This will remove the leftover great stuff from your skin.