On 01/08/2015 09:25, F Murtz wrote:
stuart noble wrote:
On 29/07/2015 13:42, Judith wrote:
My garage door has been red for ages but all the neighbours' are white.
It is starting to show its age, and needs repainting; perhaps now is the
time to change the colour and blend in.

What paint should I use to cover the red - are there any special
tricks I should be aware of? It is an up-and-over type.


Just don't use anything water based. Low vapour may be an advantage
indoors, but IMO it's solvent based all the way for outdoor jobs.
In my opinion not correct,in the main solvent based for anything needing
hard wearing eg. sills, hand rails and things that get touched, but
outside things like timber that get sun are better off with acrylic
paint,(not sure what you call it in the uk,you use funny names for
paint) lasts longer because it is more flexible.

We have mainly acrylic,vinyl latex,oil based (no one ever says emulsion
so I do not know what that is with out googling),
A bit of an idea here.

http://www.paintquality.com.au/QUALITY/index.html

Here we now just call it "quick drying". The only way you know what it's
based on is to see what it tells you to wash your brushes in.

I have no problem with water based primer/undercoat but the last acrylic
gloss I used you could peel off with your finger nail. Yes, it stays
white but I'm not convinced it won't trap moisture underneath it. IME
microporous it ain't!