Hi, this is my first post and I'm hoping someone can help me. I have repainted an outside sign for a friend's beach house containing an artistic scene. I used artist oil paint. Now, How do I protect it? I thought of ModPodge which I have used on oil paintings but it doesn't hold up OUTSIDE. This will, of course, get much heat along with moisture. Any suggestions????
I'd suggest a "spar" varnish or urethane
The term "spar" generally denotes a "marine" quality coating, and is usually much more durable for outside use in clear-coating
Personally I prefer Ben Moore's 440, McCloskey's, or Sikkens Marine for this type of application
Mostly I've used 440 which works excellently
Technically I think Marine (or Marine Gloss) has an edge, but it's pricey (and perhaps over-kill for this app.)
McCloskey's can hold it's own..and then some... against the others by any measure...but it is available in 1/2 pints for small projects (a big plus!)
Any/all of these would be top-notch for your project and your desired results