Should You Apply Polyurethane Clear Coat Sealants On Vinyl Decal Stickers

We have a little info about vinyl decal stickers and polyurethane, clear coat or poly spray coating.Wall Decals are made with a matte indoor vinyl.  Matte indoor vinyl material has an adhesive that is not so strong that it will ruin your painted or wall papered walls. For this reason, polyureth …