On Jun 2, 11:56 pm, wrote:
On 2 Jun, 11:16, Lobster wrote:

diypaint wrote:
Masonry paint is fine.
I thought you weren't supposed to use exterior grade paints indoors due
to fungicides or some other noxious substances they may or may not emit?
(And whether a garage would constitute 'indoors' I'm not sure...)

thats right, and yes its an enclosed space. Some types such as water
based would be ok, but some would be too toxic.

Re breathability, asonry paints arent to any significant extent. They
pinhole, which is fashionably called 'microporous' but the degree of
damp evaporation ability is very low compared ot genuinly breathable
paints.

You'll probably be fine with unbreathables, but in some cases they do
cause damp build up and resulting problems. The lime paint mentioned
above is cheap, easy to apply and fully breathable.

NT

Just remember to wear goggles and gloves - lime paints are not good
for skin & eyes.

exterior products use inside. Agreed, not generally advisable.
However, just check out the health & safety box on most masonry paint
vs standard interior emulsion - not too scary is it! Recent
regulations have restricted the use of the most nasty additives. Plus
the biocides used are designed to stay in the film - if they didn't
they wouldn't protect the paint!