Thinset stains on an outdoor table can be stubborn, but with the right approach, you can restore its appearance. Here’s a step-by-step guide to effectively remove thinset residue:

1. Scrape Off Excess Thinset: Use a plastic scraper or putty knife to gently remove dried thinset. Avoid metal tools to prevent scratching the surface.

2. Apply Vinegar or Lemon Juice: Soak a cloth in white vinegar or lemon juice and place it over the stain for 15–20 minutes. The acidity helps break down the thinset.

3. Scrub with a Brush: Use a stiff-bristle brush or an old toothbrush to scrub the softened thinset. Rinse with water and repeat if necessary.

4. Use a Commercial Thinset Remover: For tougher stains, apply a specialized thinset remover (available at hardware stores) following the manufacturer’s instructions.

5. Rinse and Protect: Thoroughly rinse the table with water and dry it. Apply a sealant to protect the surface from future stains.

For persistent stains, consider sanding the area lightly or consulting a professional. Regular maintenance will keep your outdoor table looking pristine!