Garage door paint

[swampydrill]

Using an external metal gloss paint to paint a garage door, existing colour is a burgundy and the colour to put on is a deep olive green. I know it would take a few coats to get this on but is there an issue if i use a green emulsion as a base coat ?

 

[JohnD]

dark grey undercoat.

The maker of your "external metal gloss paint" presumably sells a compatible one.

A thin film of paint is less likely to crack than a thick one, when the metal expands in heat and contracts when cold.

You're not using Hammerite, are you.

 

[swampydrill]

No, its one of these mixed Dulux colours, is just to freshen it up, the doors must be 40 yrs old and had numerous coats of paint on them, ill just wash them, rub down where needed and start painting, just wondered if emulsion would be ok underneath the gloss and on top of the old gloss which is pretty dulled now after 10 yrs

 

[Nige F]

is there an issue if i use a green emulsion as a base coat ?

NO Never use emulsion like that !! Any *old oil based *stuff if you must

 

[sparkwright]

You need to sand all of it down, not just where it's flaking.

If you don't sand it all over, you risk the new paint peeling off.