On 5 Aug, 13:22, "Dave Liquorice"
wrote:

It is a bit odd that the adhesive hasn't set, is that sealer rather
to effective in not letting the moisture in the adhesive into the
wall?

It's a well known problem in the trade.

I got shouted down here
http://groups.google.co.uk/group/uk....90ce721ace4b2c

Sigh.