Q. We had a beige sandstone countertop installed for an outdoor kitchen. It is sanded smooth and was sealed with three coats of sealer. I don’t know what kind—just said “sealer” on the can. Some was spilled on our manufactured patio... Read More

Q. My porcelain tiles were very slippery (dangerous) when wet, so I used a product to make them more slip-resistant. It worked, but now I have several tiles with 5 or 6 droplet-like stains that I can't remove. The anti-slip product contains... Read More