Winter's harsh conditions can be tough on cast iron outdoor benches. Without proper preparation, moisture and freezing temperatures can lead to rust and permanent damage. Follow this essential guide to winterize your benches and ensure they return in perfect condition come spring.
First, give your bench a thorough cleaning. Use a stiff brush to remove loose dirt and debris. For tougher grime, mix a mild dish soap with warm water and scrub with a non-abrasive pad. Rinse completely with a hose and let the bench dry fully in the sun for at least 24 hours. Any trapped moisture will cause rust under protective coatings.
Next, inspect for and address any rust. Use a wire brush or sandpaper to scrub away any rust spots until you reach bare, solid metal. Wipe the area clean with a damp cloth and let it dry. This step is crucial to prevent the rust from spreading under cover.
Now, apply a protective barrier. For best results, use a specialized furniture wax or a paste wax designed for metal. Apply a thin, even coat over the entire bench, including legs and undersides, using a clean cloth. Buff it to a light sheen after 15 minutes. This wax layer seals the iron from moisture. Alternatively, a rust-inhibiting primer followed by a topcoat of outdoor paint is a more permanent solution for already painted benches.
Finally, choose your storage method. The ideal solution is to move the bench to a dry, covered location like a garage, shed, or covered patio. If it must stay outdoors, invest in a high-quality, breathable, waterproof cover designed for outdoor furniture. Secure the cover tightly to prevent wind from whipping it and causing abrasions. Never use plastic tarps directly on the metal, as they trap condensation.
Come spring, simply remove the cover, give the bench a light cleaning, and it will be ready for another season of enjoyment. A little effort in the fall saves you from costly repairs or replacement.