how to waterproof stained wood furniture for outdoors

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Outdoor furniture adds beauty to the exterior space of your house, but the challenge with wooden furniture lies in its susceptibility to water damage. The wood absorbs water, which can cause it to rot, warp, and decay over time. Fortunately, you can protect your wooden outdoor furniture from water damage by waterproofing it. This article will give insights on how to waterproof stained wood furniture for outdoors.

Step 1: Clean the Furniture

The first step in waterproofing your stained wood furniture is cleaning it thoroughly. Dirt, dust, and grime can interfere with the bonding of the waterproofing sealers with the furniture wood. Use an oil-based soap and water to clean the furniture. Start by dipping a soft-bristled brush into warm soapy water and use it to scrub gently the furniture. Rinse the furniture well with clean water and let it dry completely before proceeding to the next step.

Step 2: Sand the Furniture

Sanding the furniture helps to even out the surface and remove any rough spots on the wood. You can use either sandpaper or an orbital sander to sand your wood furniture. Use sandpaper to reach into tight spaces and corners and use an orbital sander to work over flat surfaces. Once you have sanded the furniture, wipe it down thoroughly with a clean cloth.

Step 3: Apply Waterproofing Sealer

There are numerous waterproofing sealers available in the market, including polyurethane, epoxy, and acrylic sealers. Polyurethane sealers are oil-based and have a long lifespan, while epoxy sealers options for thicker coats to protect against moisture. Acrylic sealers are water-based and dry quickly, making them an excellent option for outdoor furniture in areas with high humidity. Dip a clean brush or roller into the waterproofing sealer and apply a thin coat onto the furniture. Let the first coat dry thoroughly before applying the subsequent coats.

Step 4: Reapply the Sealer

The waterproof sealers on wood furniture degrade over time, and as such, they require frequent reapplication. As a general rule, consider reapplying the sealant every two to three years. However, the frequency of reapplying the sealer depends on the specific type of sealer you use and the outdoor elements it is exposed to. Reapply the sealer according to the manufacturer's instructions.


In conclusion, waterproofing your wooden outdoor furniture is affordable and easy, and it prolongs the lifespan of your furniture. Clean the furniture, sand down the rough spots, and get the right sealant for the job. Always reapply the sealant as directed and when necessary. With these insights in mind, you can keep your outdoor furniture looking new and beautiful for a long time.


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