Flex Seal Flood Protection spray does produce flammable fumes, so it must be used in a well-ventilated area. “If you’re using it indoors, make sure to open windows and doors for proper ...

you need to be able to boot from it on your old PC where you want to install ChromeOS Flex. If your PC runs Windows 10, the easiest way to do this is to use the Advanced startup options.

Flex Seal was flexible but tore when bent too far. And although it sealed the crack in our flowerpot, we had to use two coats of spray paint to conceal our handiwork.