Outdoor tables require special care and maintenance to withstand the elements. Waterproofing an outdoor table will help protect it from rain, snow, and spills so it lasts for years. Follow these tips to properly waterproof your outdoor table.
Clean and Prepare the Table Surface
The first step is to thoroughly clean the table to remove any dirt, debris, or old sealant. Use a stiff brush and warm, soapy water to scrub the entire surface. Rinse well and let the table dry completely before moving on. This allows the waterproofing to fully adhere to the bare wood.
Check for any cracks, splinters, or rough spots and sand them smooth. Unfinished wood will absorb more waterproofing solution for better protection. Make any necessary repairs before waterproofing.
Choose a Waterproofing Method
There are a few good options for waterproofing wood furniture for outdoor use:
Polyurethane
Polyurethane is one of the most effective and durable wood finishes. Use an exterior-grade polyurethane with UV inhibitors specifically formulated for outdoor furniture. Apply 2-3 coats allowing sufficient dry time between coats. Lightly sand between coats for maximum adhesion. Polyurethane forms a protective surface layer on the wood.
Epoxy Resin
Another option is using bar-top or table-top epoxy resin. Epoxy will fully seal and coat the wood in a thick, glossy finish. Multiple coats can be layered for extra water protection. Epoxy resin requires more preparation but provides an attractive high-gloss look.
Marine Varnish
High-quality marine varnish contains UV blockers that prevent sun damage on outdoor wood. It forms a flexible, water-resistant seal. Apply several coats of marine varnish allowing thorough drying between coats. Allow the final coat to cure for a few days before use.
Water Sealer
Water sealers designed for outdoor wood soak into the grain for in-depth water resistance. They contain mildewcides and UV blockers as well. Choose a sealer recommended for outdoor furniture and read all directions. Water sealers require reapplication every 1-2 years.
How to Apply the Waterproof Coating
Once you have selected the ideal waterproofing product for your needs, follow these steps to apply it properly:
- Work in a well-ventilated area – Sealers and finishes can be toxic or flammable. Work outside or open all windows. Use respiratory protection.
- Stir the finish thoroughly – This ensures the ingredients are properly mixed. Check that it has a smooth, uniform consistency.
- Use a high-quality natural bristle brush – Avoid foam brushes which may leave bubbles. Use a brush sized for the project.
- Apply in the direction of the wood grain – Brush on in smooth, even strokes following the grain pattern. Work from one edge of the tabletop to the other.
- Allow proper dry time between coats – Check the product label for exact dry times. Wait the recommended time before adding more coats.
- Sand lightly between coats – Gently sand with 220 grit sandpaper to help each layer adhere. Be careful not to expose bare wood.
- Apply at least 2-3 coats – More layers provide better protection. Stop when you achieve your desired smoothness and luster.
- Allow the finish to fully cure before use – Cure times vary. Certain finishes require 1-2 weeks before exposing to sunlight and water.
Taking the time to properly prepare the table and apply a protective finish will help it resist rain, spills, and moisture damage through seasons of frequent outdoor use. Reapply the finish as needed over time to maintain effective waterproofing. With proper care, your outdoor table can stay beautiful for years!
Frequently Asked Questions About Waterproofing Outdoor Tables
Can I use a waterproof tablecloth instead?
While tablecloths add some protection, they are not as effective as waterproofing the wood itself. Finishes and sealers soak into the grain for all-weather defense. Cloths simply cover the surface temporarily.
How do I repair water damage or flaking finish?
Lightly sand damaged areas to remove loose finish or rotted wood fibers. Spot treat just the affected sections with additional waterproof coating before recoating the entire table. Address any structural damage before refinishing.
What kind of paint or stain should I use?
Avoid using regular paint or stain meant for indoor use on outdoor surfaces. Outdoor paints and stains contain UV inhibitors and mildewcides specifically made for exterior conditions. Consult with your local home improvement retailer for recommended products.
Can I use linseed oil to waterproof an outdoor table?
Linseed oil provides minimal water resistance. While it temporarily protects the look of wood, linseed oil easily washes away and requires very frequent reapplication. Use a purpose-made sealer instead for effective outdoor waterproofing.
How often should I reapply the waterproof finish?
Many water repellent finishes need reapplied every year or two, especially if the current layer appears compromised or worn. Check for fading, crackling, peeling or other signs it may be time for a fresh coat of waterproofing.
What can I do to extend the life of an outdoor table?
In addition to waterproofing, keep the table out of direct sun when not in use, cover it during rain or snow, promptly clean spills, and re-coat the finish regularly. Avoid putting hot items directly on the surface. Consider moving the table to sheltered storage in extreme winter weather. With proper care, an outdoor table can last for many years.
Conclusion
Outdoor furniture requires extra maintenance to withstand the weather. Any wooden table left outside should be properly waterproofed for protection. The best methods involve applying a durable wood finish formulated for exterior surfaces, such as polyurethane, epoxy resin, marine varnish or penetrating water sealer. Allow sufficient dry time between multiple coats following the grain pattern. Reapply the finish periodically as needed. Following these tips for properly preparing and waterproofing an outdoor table will help it stay beautiful and functional for countless seasons of alfresco dining and entertaining. Be sure to pair your weatherproofed table with water-resistant outdoor cushions and pillows for a complete set-up.