This will likely depend on the the type of under coat used , if any . As with all jobs perform a test area first. Make sure the area is clean and it maybe worth white just lightly sanding the surface , This will break down any weatherproof lacquer on there , which paint a varnish stripper does not work on. Coverage 500ml will provide 0.5 square meter treatment .
Answered by: TECH ADVICE
Date published: 2021-09-20