Can I apply combicolor to an existing painted surface that was painted with a 2 pak paint that has a finish like a hammerite product. Cheers Ian
We wouldn’t normally recommend applying a single pack product over a 2 pack product as we cannot guarantee adhesion.
The existing 2 pack would need to be abraded prior to application of another coating but we would recommend using something like Rust-Oleum 9200 Rust-O-Thane or Rust-Oleum 9600 Rust-O-Thane Polyurethane instead,these are both 2 pack and likely to be more compatible subject to testing on a small area prior to full application.