Flex Seal typically becomes "dry to the touch" within 2 to 3 hours. However, it takes 24 to 48 hours to fully cure. Avoid opening or closing the window during this time, as it could break the seal. Important Precautions
: Best for filling larger gaps and cracks. It provides a thick, rubberized barrier that is UV-resistant and can even be applied to wet surfaces. Flex Seal Draft Tape flex seal on windows
: Ideal for a temporary, non-messy solution to block winter drafts. It is easily removable and works well on smooth surfaces like glass and wood. Flex Seal typically becomes "dry to the touch"