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The short answer is: Yes, but only in very specific scenarios. Here is everything you need to know before you spray. Flex Seal is a rubberized coating. It is excellent at filling micro-cracks and sealing surface-level moisture . Here are two situations where using Flex Seal makes sense:
Sealing the glass panes, the sliding tracks, weatherstripping, or window AC units. flex seal on windows
So, when you notice a drafty window or a small leak around the frame during a rainstorm, it’s tempting to reach for that aerosol can. But The short answer is: Yes, but only in