Can you Apply Oils over Aqua Coat Clear Grain Fillers?

We get this question a lot: “Can I apply oil finishes over Aqua Coat Clear Grain Filler? And how long do I need to wait?” So, we put it to the test.  Watch the video.

We applied our Clear Grain Filler and High Performance Clear Grain Filler exactly as directed—2 thin coats, thoroughly worked into the grain, and carefully leveled. Then we let it cure for just 5 days at room temperature in ideal conditions, 65-80 degrees, 30-40% humidity.

After that, we applied the following products according to each manufacturer’s instructions:

• Tung Oil
• Walrus Oil
• Rubio Monocoat
• Danish Oil

Good news: all of them worked beautifully.
Each finish adhered cleanly, cured properly, and delivered the expected look and feel—no adhesion issues, no blotching, no surprises.

So, if you’re planning to use Aqua Coat Clear Grain Filler under your favorite oil finish, you’re in the clear after a 5-day cure. Just be sure the filler is cured, and the surface is clean before applying your oil and make sure you run a test.

Whether you're finishing a guitar, a tabletop, or furniture and want to get a glass smooth, clear finish, Aqua Coat gives you the flexibility to build the look you want—without compromising adhesion or clarity.