I have a metal door painted with Oil Paint. It had a lot of chips in it. I painted over it with Latex first using Easy Liquid Sander Deglosser. THe paint pulled off in sheets. I did another door using acrylic Paint and had the same problem. WHAT AM I DOING WRONG????????
Liquid de-glossers are notorious for not working. I'm sure it helps, but using a de-glosser alone often isn't enough prep to ensure a good bond over oil like that.
For a better bond, sand them lightly but thoroughly then clean or de gloss.
I have found that most average acrylic paints won't bond really well to smooth metal doors even with prep. I like to use a bonding primer, or a specialty paint like Advance or Breakthrough.
Haven't had a chance to use this yet but the guy at my S.W. gave me, "All Surface, Enamel, Oil Based Satin" for my metal front door which has been previously painted. It almost looks like factory paint or original paint, 30 yo and in perfect condition, but cream and I want white.
I have heard the problem so many times after using the de-glosser. After a good sanding and wipe down then a good primer you should be good to go. I have used SW ASE (all surface enamel) on ext. doors and really like it. Would like to hear if anyone else has used it. In fact this is what I used on the doors on my house. Or if you sand it down you could use a DTM paint (direct to metal).
I have also learned from experience not to trust painting an acrylic enamel over an oil based enamel without an intermediate bonding primer. Even with the bonding primer the surface needs to be sanded to ensure a good grip.
Why are you painting it? Just color change, damaged, peeling. Is there a build up of old paint? These are factors that will effect the answers. In some extreme cases you may be better off stripping. I mean the door of course.:whistling2:
2 steel doors, original 30 yo paint. Excellent condition (wondered if they were factory painted) but I don't like the color.
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