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Does this garage door need powder coating or can you paint it?

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  1. #1
    Novice
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    Default Does this garage door need powder coating or can you paint it?

    It's metal. Need to know wether the right thing is to paint it or does it need powder coating or some other special kind of treatment when changing it's colour. If I paint it I don't want the paint to flake off after a while.
    Asking, incase I need to change the door's colour to fit in my colour scheme.
    The current paint is creamy yellow, it's very chalky to the touch. Door is about 20 years old and it's paint or coating is in good condition apart from different areas on it being chalkier than others to the eye.

  2. #2
    GeoffW1
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    Default

    Hi,

    It is probably Colorbond steel. You can paint it. I'd spray it for a decent finish. To avoid flaking off later, just make sure you have thoroughly prepared it, which may mean an undercoat first.

    To find out the best system try the Dulux (they also make nearly all the powdercoat colour in Oz) technical advice line on 132377.

    Cheers

  3. #3
    Senior Member
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    First thing is it doesn't need to be powder coated. Basic preparation will be the key to a long lasting finish.
    Just my way of going abouts doing it.
    1. Clean the surface with sugar soap.
    2. Presure wash the suface.
    3. Allow to dry thorougly.
    4. Sand or scuff the surface removing the sheen which also allows the new paint to bind to the surface.
    5. Apply an oil based sealer undercoat as this will be a great base for the top coats.
    6. Lightly rub the undercoat removing any grit. Dust the door down.
    7. Apply 2 coats of a Premium Exterior Paint. I recommend using a Satin/Semi Gloss finish as it isn't too flat and isn't too shiney and also cleans up good. This should last a good 5-10 years if conditions aren't too harsh.

    Note you can apply a gloss enamel if you prefer a really shiney surface, but if the door attracts UV for most of the day the gloss enamel finish will last a good 2 to 3 years then it will dull down.

  4. #4
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    Default

    Thanks for the advice.
    The coating on the door has been there is use for 20 years and looks like it could go another 20.
    I would want more than 5-10 years out of a paint job.

    What would it's original colour treatment have been?

  5. #5
    Senior Member
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    Default

    Could be Powdercoat, Baked enamel, Acrylic Laquer, Industrial enamel.

  6. #6
    Senior Member
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    Its Original Colour treatment (If it hasn't been painted since) is Powdercoated from the factory)

    Your most durable finish you could successfully spray onsite would be Electrostatic but even this is not for the faint hearted..

  7. #7
    1K Club Member Master Splinter's Avatar
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    Scrub it down with a green nylon scour or two to get the chalky film off, hit with a strong detergent (sugar soap, tricleanium, even washing machine powder), rinse and slap on some solaguard or equivalent.

    If you want to go fancy, Dulux make a metal roof paint....but Solaguard gives a 15 year warranty for two coats, so it's not a high cost item to do.

    The standard factory finish on BHP colorbond is baked enamel.
    DIY electrical wiring to AS/NZS3000 - details here - http://goo.gl/9d33T (PDF file)

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