Spray Painting (Part Two)

[Glenn 'Stinky' Stankevicius]

I was ready to spray colour on the bonnet and tailgate (late repairs) on Sunday morning. A supposed warm day with showers later but of course I got called into work and by the time I got home the day had turned muggy.
Last night there was constant rain and today also.
So to my question, how can I spray when the weather is colder or humid?

[nicko]

when humid,better to forget it,if cold make your garage warm somehow and if steel is not cold to touch anywhere ,then you will be fine,if car and air are cold you will get a slightly milky look to paint (thus ruined)also both conditions (humid and Cold car) will come out in blisters sooner or later,can take up to 6 months to show through paint.this is because humid air will carry water in it that can get past the water trap or just be on car in not seen patches and cold air will make paint go milky,you can buff it up nice and shiny still but color will still be wrong due to the milky effect it creates.

[FC229]

I have read a paint spec which recommended not painting when the temp of the item was less than 3 degrees above Dew Point temp. (Temp when condensation will occur on something) In humid weather the dew point temp is very close to the ambient temp. If you're really worried about it go to weatherzone.com.au and check the DP in relation to current temp, and don't paint if they're close to each other.
BTW way I don't consider myself to be a weather nerd, just did a bit of research for a friend who had a problem with condensation in his house!! :-/

[fx-hq]

what type of paint are you using? as with laquer the milky effect will dissappear if you spray thinner onto the panel another day when is warm. With 2 pack not so sure