Hi, I am looking to re-paint my soffits and cast iron gutters. Could you please advise the best metal primer to use after removing the loose rust and if zinsser all coat would be a suitable top coat product? I am looking to achieve a matt anthracite RAL7016 finish across both the wood and metal. Thank you.
Assuming you are only painting the exterior of the guttering for decorative purposes, we can recommend Rust-Oleum 769/780 Damp-Proof Rust Primer.
Zinsser Cover Stain should be applied to any areas of bare wood prior to application of Zinsser AllCoat Exterior Matt (Water Based). This is available in 4,000 RAL, NCS, and British Standard colours, including RAL 7016 Anthracite Grey.