In article ,
"A.T." writes:

I have a shelf in my bathroom that was painted with white gloss. Part of
this bubbled up exactly as if it had been treated with paint stripper only
much more gradually (it took a few weeks or so to go ). Can anyone suggest
why?

Was this on old gloss? Some of the manufacturers at least used to
include a silicone compound of some sort (remember SILthane?) to
try to make soiling not stick to the paint. Of course this made
new paint not stick, and although I do not know how exactly they
managed this, the silicone migrated out to the surface with time,
so that the initial two coats bonded together. Sanding, followed
by sugar soap ought to get adhesion.

John Schmitt


--
If you have nothing to say, or rather, something extremely stupid
and obvious, say it, but in a 'plonking' tone of voice - i.e.
roundly, but hollowly and dogmatically. - Stephen Potter