Yes, applying a high-quality sealant is a highly recommended and effective method to protect your wrought iron outdoor furniture. Wrought iron is durable but porous, making it susceptible to rust when exposed to moisture. A clear, waterproof sealant creates a protective barrier that shields the metal from rain, humidity, and UV rays, significantly slowing down the oxidation process that causes rust.
For best results, proper preparation is crucial. Start by thoroughly cleaning the furniture to remove all dirt, debris, and any existing loose rust. Sand any rough or rusty spots lightly. If there is old, peeling paint, it should be removed. Apply a rust-inhibitive primer to any bare metal areas before proceeding. Once the primer is dry, you can apply the sealant. Choose a sealant specifically formulated for metal and outdoor use. Apply it in thin, even coats using a brush or spray, according to the manufacturer's instructions, ensuring full coverage. Allow adequate drying time between coats. Regularly inspecting your furniture and reapplying the sealant every one to two years, or as needed, will provide ongoing protection, greatly extending the life and beauty of your investment.