Q:

How do I safely and cleanly remove sealant from a plastic bath?

I really need to replace the sealant around the bath, but I want to do a good job of removing the old stuff first.
The bath is a plastic one, and the walls are tiled.
What's the best way to get the old stuff off without leaving any residue or damage, so that fresh sealant can be applied?

A:

You might have to resort to good old fashioned elbow grease.
The sealant should come off the tiles the easiest, both mechanically by scraping with a plastic edge - the flat edge of an adhesive spreader should be suitable, and if necessary chemically (though I'm not 100% certain what you can use) as the glazed surface will hard to damage.
The plastic bath might cause more problems. I'd start with rubbing or scraping with the plastic edge - but take a lot more care. Chemicals are more likely to damage the surface too. You could try using a plastic safe cleaner.

