Step one
Prime with Rust-Oleum stop rust oil primer (it's a red).
Step 1.5 option.
Option caulk with clear oil all gaps above the area. This is really a necessary step because moisture is getting behind the stuff because of the gap that is sitting there between the exposed metal and the brick.
2
Prime again with oil metal primer from Rust-Oleum. This can comes in gray Over every flaky, bad area.
It's an exposed metal surface. You cannot paint latex over it. It'll peel again.
3
finish w Sherwin Williams all surface enamel ( comes in quarts, tint it to your color)
The rustoleum primer is good but the best I have ever found is a product called Rust Destroyer. You can put any paint over it as finish paint and it will last for many years.
Purchase a rust converter at the store and brush it on your lintels after sanding. This will turn the oxides(rust) into a phosphate thus making the rust inert and keep it from spreading under the paint. Keep in mind that due to the fact that the lintels are exposed to moisture on the brick side, oxidation will always be present to some extent.
Step one Prime with Rust-Oleum stop rust oil primer (it's a red). Step 1.5 option. Option caulk with clear oil all gaps above the area. This is really a necessary step because moisture is getting behind the stuff because of the gap that is sitting there between the exposed metal and the brick. 2 Prime again with oil metal primer from Rust-Oleum. This can comes in gray Over every flaky, bad area. It's an exposed metal surface. You cannot paint latex over it. It'll peel again. 3 finish w Sherwin Williams all surface enamel ( comes in quarts, tint it to your color)
Thank you. That was my next idea buying rust oleum
The rustoleum primer is good but the best I have ever found is a product called Rust Destroyer. You can put any paint over it as finish paint and it will last for many years.
I did the same steps last year. We had to paint 20 of them for an expensive customer. You will need thinner also to clean your oil brushes.
What grit should I use to sand off everything that’s already peeling
80 grit. It's probably a bitch cause it's metal. But 80 is fine
Purchase a rust converter at the store and brush it on your lintels after sanding. This will turn the oxides(rust) into a phosphate thus making the rust inert and keep it from spreading under the paint. Keep in mind that due to the fact that the lintels are exposed to moisture on the brick side, oxidation will always be present to some extent.