Reestit Mutton wrote:
Hi,

I've recently renewed the sealant in my bathroom as the old stuff was
covered in mould.

However, although I filled the bath with water before using the
sealant and left it for almost 24 hours before emptying it and using
the over-bath shower, it seems that every time weight is applied to
the bath, a large open crack appears in the sealant.

Similarly, when I run my finger along the sealant above the sink that
was renewed a few days earlier, bits of it come away on my finger.

Should I have left the bath sealant a lot longer before emptying the
bath and using the over-bath shower (it *seemed* dry to me) or is it
possible that the sealant (although advertised as for kitchens and
bathrooms) is just plain rubbish? - It was a B&Q branded sealant.

FWIW, both areas were stripped of the old sealant, cleaned and dried
before the new sealant was applied.


I've just had EXACTLY the same problem with unibond sealant.

It appears to have set much more brittle and coarse on the surface than
kitchen/bathroom sealant I've used before, what would cause that?