Can I Use Clr on Slate

DO not use CLR on natural stone or marble, terrazzo, colored grout, painted or metallic glazed surfaces, plastic laminates, Formica, aluminum, steam irons, leaded crystal, refinished tubs or any damaged or cracked surface.

How do you get hard water stains off slate?

Mix 1/4 cup of baking soda, 1 teaspoon of lemon juice and 1/4 to 1/2 cup of water into a thick paste. Scrub the paste into the slate using the nylon bristle brush. Rinse with distilled water and dry immediately. Allow the tiles to dry out for 48 hours.

Why is my slate turning white?

It’s just a cosmetic issue. Your slate was probably coated with a sealer or color enhancer, and that’s what’s turning white or gray in response to heat. Sealers make stone less porous. … Installers are typically the ones who apply sealers and color enhancers after the stone is installed.