When I have paint fall off stuff that quickly I usually chalk it up to something I did wrong. I always get a little nervous painting things so I think I rush sometimes, apply the paint too thick, don't wait long enough in between coats, didn't do the prep good enough.How else can I screw this up? I'm sure I've done them all. I do occasionally get it right. I've got a grill on the side of my house now that I repainted the end caps on. I thought I did a good job, paint started peeling within 6-8 months. I still have no idea what I did wrong on that one.