"stuart noble" wrote in message
...


IME this can happen when oil paint is applied to either damp surfaces or
things it doesn't bond to vey well (e.g. plastic). You don't mention what
type of paint(s) you're using. Are the magnolia and green the same type?
Is
the bubbling better or worse on the woodwork?
.


Guys

the paint is oil based 'Dulux colour mixing system' suitable for wood and
metal. Both the undercoat and topcoat are mixed colours. The Magnolia is
an 'off the shelf' non drip, again by Dulux.
The bubbling is far better on the woodwork, but I do not understand why the
undercoat does not take care of any 'problem' surfaces, as you rightly point
out that the 'non-wood' surfaces are worse, even tho the paint is suitable
for wood and metal (or so it claimed on the tin :-( )

Russ