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Wood is a natural material that stands up well to outdoor conditions, but over time, exposure to the elements can cause it to lose its appearance if not properly maintained. For wooden decks, fences, or gates, applying the right varnish is an effective way to restore their look and help protect them.
Proper protection against UV rays and insects will help your outdoor woodwork last for years while maintaining its overall appearance. When choosing a varnish, you’ll find a range of options, including clear, matte, gloss, or tinted finishes. Select the type that best matches your fence, gate, or deck and the look you want to achieve.
What You’ll Need
Varnishing a wood fence or gate requires more preparation than maintaining an aluminum fence. Before applying varnish to your deck or fence, you’ll need to prep the surface. This may involve using a paint stripper, sandpaper, or even an insecticide or fungicide treatment, depending on the condition of the wood.
Apply these products with a spatula or brush. If the wood is already painted, sand it thoroughly before using a paint stripper. Paint stripper dries quickly, so avoid applying it on windy or very sunny days to prevent it from drying too fast. You’ll know it’s working when the old finish starts to bubble.
Once the surface is stripped, rinse with water or wipe with alcohol, then let it dry completely. If there’s an old stain, a light brushing can help remove it. For new, untreated wood, don’t forget to apply a fungicide at this stage.
How to Varnish Wood
Before you start, stir the varnish thoroughly. For the first coat on your deck, gate, or fence, it’s best to thin the varnish slightly to help it soak into the wood. Use a brush and always apply in the direction of the wood grain. Allow the first coat to dry fully before lightly sanding with fine sandpaper (240 grit works well).
After sanding, remove any dust before applying the second coat. Again, brush in the direction of the grain—on gates, this is usually vertical. Applying varnish with the grain helps ensure a durable finish.
Tinted varnishes are often recommended for outdoor wood like doors and gates. While wood remains a popular choice for fencing and decking, materials like PVC and aluminum are increasingly favored for their low maintenance. Consider these options when choosing a fence or gate for your yard.
