Which sealant for acrylic bath?

Peel as much of the old stuff off and then make a small run along the joint with any sealant you choose that does the job. It is also a good idea to lay one of the bath seal strips along the edge to reinforce the seal that the silicone makes. The filling the bath with water idea always done no matter what method you use to create the sealed joint.

One of these:

Do you know what 'self adhesive' means with this product? Is it just a sticky paper type strip, or a more sophisticated sealant-adhesive?

All the ones I've seen have been just a sticky strip - but that doesn't matter. Ignore the whole 'self adhesive' thing and they are great. Think of them as a protective cover for the silicone, and a means of increasing the silicone bath-wall contact area.

Thanks for your reply.

Just to clarify - are you saying to use the strip while the silicone is still wet?

Thanks,

Ian

The seal strip can applied on top of uncured silicone and when the strip is pressed into place it helps to contour the silicone behind it into a more preformed shape. The silicone is hidden by the strip anyway so it doesn't really matter, but don't have cured silicone protruding to far out from the surface or it will only push the seal strip back off the wall.