I plan on using this on a cast iron fireplace I am busy re-doing. Can I paint high temp black paint over this?
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We appreciate your interest. Rust-Oleum High Performance Rust Reformer Spray can withstand temperatures up to 200°F. If applied to a cast iron fireplace, it will blister and peel off as that surface will exceed 200°F. If the product is already applied, we recommend stripping it off the surface before applying the Rust-Oleum Specialty High Heat Spray to ensure no peeling occurs. - Rust-Oleum Product Support 5
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