Can you apply poly urethane over a decal?

Yes, you can apply polyurethane over a decal, but it's important to ensure that the decal is fully adhered and dry before applying the finish. Use a water-based polyurethane to avoid damaging the decal's colors. Apply a thin, even coat, and let it dry completely before adding additional layers to protect the decal without affecting its appearance. Always test on a small area first to ensure compatibility.