Yes, Spar varnish is a marine quality exterior varnish that can be used over many surfaces, however it does have an amber hue that will affect the color of whatever surface is being coated. If you're looking for a long-lasting crystal clear coating then a better choice would be a water-based polyurethane coating.
Yes, Spar varnish is oil based and can be used over enamel paints.
Paint can be applied over varnish, but it needs to be a compatible type of paint for the type of varnish, and the surface needs to be prepared by removing loose material, dirt and sanding. If it is not a compatible paint the surface needs to be etch primed. Contact a local paint supplier for advice.
For oil paintings: best let it dry for a longer time (6 months or so), then put dammar varnish over it. The long drying time makes sure you can take off the varnish later, without harming the paint itself.
Apply a coat of exterior paint over the interior paint to protect the finish and to discourage mildew growth on the paint film.
Yes, you can.
Yes. I have a furniture company and we use this all of the time. Best recipe we have found is using a tinted latex primer or flat latex paint, scuff with 320 grit paper, paint second coat. After drying, lightly sand with 400 grit paper to remove any roughness, spray with vinyl sealer, scuff again with 400 grit paper and spray conversion varnish. Remove dust at each sanding stage with a vacuum and then a static cloth.
Paint can be applied over varnish, but it needs to be a compatible type of paint for the type of varnish, and the surface needs to be prepared by removing loose material, dirt and sanding. If it is not a compatible paint the surface needs to be etch primed. Contact a local paint supplier for advice.
For oil paintings: best let it dry for a longer time (6 months or so), then put dammar varnish over it. The long drying time makes sure you can take off the varnish later, without harming the paint itself.
Yes, you can.
That is not generally recommended.
yes
Yes, but I usually sand it lightly first.
Usually yes. You'd be advised to use a water based varnish, and rough up the paint a little before coating.
Apply a coat of exterior paint over the interior paint to protect the finish and to discourage mildew growth on the paint film.
You can but you will want to give the vaneer a light sanding first.
You could use a clear varnish.
spray spray paint all over the light and let it dry. nothing special.
You can paint over the letters with a clear nail varnish, just make sure you don't get nail varnish all over your keyboard.