So I guess when the door was painted 10 years ago, paint might of spilled on the metal sill? I'm not sure if that is the correct word for it. But I've taken a picture of it for reference.
I've attempted to use paint thinner to remove the paint, but it doesn't come off.
Anyone have suggestions? Is there a specific way i'm supposed to use paint thinner? I just put some on a rag and scrubbed as hard as I could.
Best Answer
if this is an anodized aluminum sill (thats what it looks like), try using brake fluid. it will destroy just about any paint bond out there. just wipe up afterwards and degrease with a good quality degreaser.
be wary though, if its anything else other that anodized aluminum (or an other uncoated metal), the brake fluid will destroy the coating (even powdercoating will be toast)
if its vinyl, try cleaning it up with paint thinner and a toothbrush. it may take some time but it usually works. oven cleaners with sodium hydroxide in them also do a good job without damaging the vinyl.