Varnishes are applied to wood to protect the surface from abrasions and scratches that ruin the finish. But, there are times when woodworkers are not satisfied with the results after the varnishing is completed. At this point, many people ask themselves, can you stain over varnish?
This is understandable. Removing the varnish to reapply the stain is a time-consuming chore and skipping that stage would be much easier. In this article, we will answer this question to help you get the right finish for your project.
Is it Possible to Stain over Varnish
The short answer is yes, it is possible to stain over varnish without causing problems, but this is a different process than varnishing untreated wood. The wood must be cleaned and sanded with fine-grit sandpaper to remove any dust, debris, and minor imperfections.
This sanding brings out the wood grain emphasis, and the penetration of the stain will be improved. But, before you begin, there are a few more aspects of this approach that need to be understood.
Do You Have To Remove Varnish Before Staining?
So, can you stain over varnished wood without sanding? The short answer is no. This is not recommended because the fresh coat of stain cannot penetrate the porous wood structure. The layer of varnish has closed the wood pores, and the wood will not take the stain before that layer is removed.
Even a light sanding will remove the varnish layer, and the exposed wood is revealed for staining. The stain should be applied evenly over the surface; the absorption will be easy, which makes the spread more effective.
Steps On How To Stain Over Varnished Wood
Now that we’ve answered the question, can you stain over varnish? It’s time to break down the process with five easy-to-follow steps:
Step 1: Surface Preparation
The top coat of the varnish should be sanded with a 280-grit or finer sandpaper. This will remove any uneven sections and bumps to make the stain application smoother. You don’t need a fully varnish-free surface, concentrate on creating a smooth surface.
Step 2: Apply the Stain
When the surface is smooth and clean, go ahead and apply the first coat of stain. There are three common approaches: brush, cloth, or spray applicator. The stain application mode that you choose should match the project. If you use a cloth to apply the stain, wipe off any excess between coats.
If you use a brush, apply the stain in thin coats across the entire surface and brush away excess stain to prevent brush marks.
Step 3: The Stain Cures
The stain should be left to dry and cure overnight, but the drying time may vary depending on the product you’re using, and it’s a good idea to double-check. When the stain has cured, it can be protected from scratches that would remove the tint.
Step 4: Adding a Protective Layer
This is usually a fresh layer of varnish that is applied over the cured stain surface. If the stain is on top of the wood or on top of the varnish, it can be protected with an extra layer of varnish.
Follow the application and drying instructions for your chosen varnish carefully, and you’re ready for the final step.
Step 5: Analyzing the Finish
Take some time to analyze the finish to evaluate the results of the first four steps. Check that no unexpected problems have arisen due to errors made during the stain and/or varnish application. At this stage, you can see the exact tone or shade and check that it’s what you wanted.
If you’re unsatisfied, return to step one and repeat the process using the same product with a second coat or choose a different stain.
FAQ’s– Can You Stain Over Varnish
Can you stain over varnished wood without sanding?
It is technically possible to stain over varnish without sanding. But, that surface would have to be smooth and clean, or the results will not match your expectations. Sanding is an essential stage for finishing to a high standard for the smooth surface and the preparation for staining. Stain simply holds onto a varnished surface better if it’s been sanded and cleaned thoroughly. This requires light sanding with 280-grit or higher grit sandpaper, and you only need to remove some of the varnish coat.
How do you stain varnished wood darker?
It is possible to darken wood with a top varnish coat using a similar process that you would use to apply stain over varnish. Add extra coats of stain between coats of varnish until you’re happy with the color and finish. In this instance, don’t sand the stain; sand the varnish layer after it cures, and this will prevent changes to the stain layer. The varnish layers must be thin to prevent a plastic look that most people want to avoid.
Is there a stain that can go over varnish?
Asking the question, can you stain over varnished wood without sanding? is only part of the equation, and it’s natural to wonder if there is a specific stain that’s designed to be applied over varnish.
Before we answer this question, it’s important to state that the varnish product that you’ve chosen must have dried and been cured before you can apply a finish.
There are a number of finishes that can be successfully applied on top of the varnish layer. The most common and obvious choices are the aforementioned stains that we’ve already covered earlier in the article.
But if you want a different finish, there are three readily available options; shellac, polyurethane, and lacquer. These three finishes can be applied with no problems as long as the varnish is fully cured before they are applied.
Can You Stain Over Varnish-In Conclusion
We hope that we’ve answered the question, can you stain over varnish? to your satisfaction. This is a simple concept, but in practice, it can be complex because you need to consider the drying and curing times. Staining between layers of finishing is known as glazing, and it can take time and practice to master this technique.
Staining wood without stripping the varnish coat fully is a great way to save time. If you’re interested in using this technique, practice on some pieces of scrap wood, and you will have more proficiency when you work on your next finishing project.
I’m Thomas Steven with more than 12 years of experience in woodworking. It has always been my passion to become a successful woodworker. I have completed hundreds of successful projects. This blog is a way of sharing my woodworking experiences and what tools get the best results. I write about woodworking while being an associate with Amazon and I earn a little commission from every qualifying purchase.