What Grit Sandpaper Is Best for Stripping Varnish?

When refinishing or revitalizing wooden furniture, stripping away old varnish is a critical first step to achieving a flawless finish. But which sandpaper grit is most effective for this job? Here’s what you need to know.

Selecting the Right Sandpaper Grit for Varnish Removal

Stripping varnish from wood requires a careful balance—too coarse, and you risk gouging the wood; too fine, and the process becomes inefficient. The optimal grit range for varnish removal is 80 to 120 grit. This medium-coarse grit efficiently strips the varnish without harming the wood beneath.

Using a finer grit (higher number) may prolong the task and leave stubborn varnish behind, while an overly aggressive grit (lower number) can scratch or unevenly wear down the wood.

Step-by-Step Guide to Removing Varnish from Wood Furniture

Now that you’ve chosen the right sandpaper, follow these steps for a smooth, professional finish:

Prepare the Workspace – Remove any hardware and cover the surrounding area with a protective sheet to catch debris.

Apply a Varnish Stripper – Use a brush or rag to generously coat the surface with a chemical stripper, adhering to the product’s guidelines.

Allow Time for Penetration – Let the stripper sit for the recommended duration to loosen the varnish.

Scrape Away the Varnish – Gently lift the softened varnish with a putty knife or scraper, working carefully to avoid wood damage.

Sand the Surface – Once most of the varnish is gone, sand the wood with 80-120 grit paper, moving in the direction of the grain for an even finish.

Clean Thoroughly – Wipe down the furniture with a damp cloth to eliminate residual stripper and sanding dust.

Repeat if Needed – For stubborn spots, reapply the stripper and sand again until the wood is completely bare.

Final Thoughts

Selecting the correct sandpaper grit—80 to 120—is key to efficiently stripping varnish while preserving the wood’s integrity. By following these steps, you can successfully strip old varnish and prepare your furniture for a fresh, beautiful refinish.