In article ,
wrote:
In a moment of madness I had "stone tiles" put on the floor and walls of
the bathroom.The shower tray is a pre-formed composite material that is
tiled. The mastic pealed around the junction between the wall and floor
of the shower (it's all covered in tiles, no plastic tray) causing a
hard to diagnose water leak. When pulled, the mastic pealed off the
tiles like opening a new zip. Is there a good "sanitary" sealant (what
does that mean anyway?) that has good adhesion to stone tiles? Should I
prep the area where I am going to reapply mastic in any way apart from
leaving it all to dry out for a couple of weeks? Does dilute bleach
cause mastic to fail which I use when there is a hint of mould on the
mastic?

The normal sealant to use here would be silicone. Anything which peels off
easily either is poor quality or not correctly applied. Since it is a form
of glue, surfaces have to be clean.

I'm assuming there is no obvious movement between the two?

--
*Strip mining prevents forest fires.

Dave Plowman London SW
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