How to create acid-washed stone outdoor ottoman surfaces?

Creating an acid-washed stone surface for an outdoor ottoman adds a rustic, weathered charm to your furniture. Here’s a step-by-step guide to achieve this stylish finish:

1. Select the Right Stone: Choose a porous stone like limestone or sandstone for better acid absorption. Ensure the ottoman base is sturdy enough to support the weight.

2. Prepare the Surface: Clean the stone thoroughly to remove dirt and debris. Let it dry completely before applying the acid solution.

3. Mix the Acid Solution: Combine muriatic acid (hydrochloric acid) with water in a 1:10 ratio. Always add acid to water, not vice versa, to avoid dangerous reactions.

4. Apply the Acid: Use a spray bottle or brush to coat the stone evenly. The acid will react with the surface, creating a weathered, textured appearance.

5. Neutralize and Rinse: After 5–10 minutes, neutralize the acid with a baking soda and water solution. Rinse the stone thoroughly to stop the reaction.

6. Seal the Surface: Once dry, apply a stone sealer to protect the finish from weathering and enhance durability.

This technique gives your outdoor ottoman a unique, vintage look while maintaining functionality. Always wear protective gear when handling acid!