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I need to replace the bathroom sealant around our bath, as our bath has moved by about a cm over the years and the watertight seal has broken.

The sealant I have says "Skins in 15 minutes, dries in 24 hours".

What does "Skins" mean? I'm assuming that means that the surface goes solid (kinda like touch-dry for paint), but what's the implication of this?

What I'm trying to figure out is - when can I use the bath again? After 15 minutes, or after 24 hours (our shower is above the bath, so 24 hours is a loooong time to wait before using the shower).

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up vote 4 down vote accepted

After 15 minutes, you can no longer work with the sealant, e.g. smoothing out any imperfections with a wet finger. After 24 hours or so, you can use the shower again.

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