Cleaning Natural Stone Countertops
Natural stone countertops — granite, marble, quartzite, and engineered quartz — are among the most common premium surface choices in Ontario kitchens and bathrooms, and among the most commonly damaged through incorrect cleaning. Stone surfaces require a different approach than laminate or solid surface alternatives.
What Damages Stone
- Acidic cleaners: Vinegar, lemon juice, and citrus-based cleaners etch marble and limestone. A single application can permanently dull the polished surface. Even vinegar-based "natural" cleaners cause cumulative etching on calcareous stones
- Bleach and ammonia-based cleaners: Break down the sealant that protects porous stones
- Abrasive pads: Scratch the polished surface
- Leaving spills: Particularly red wine, coffee, and oil — porous unsealed stone absorbs stains quickly
The Correct Routine
Daily: Wipe with warm water and a few drops of dish soap on a microfibre cloth. Rinse the soap residue with a damp cloth. Dry immediately — mineral deposits from standing water create water spots on polished stone.
Granite and quartzite: Relatively acid-resistant. Standard dish soap and water is sufficient for daily cleaning. Stone-specific cleaners add protection.
Marble and limestone: Highly sensitive to acid. pH-neutral stone cleaner only — no vinegar, no citrus, no bleach. Seal annually to reduce porosity.
Engineered quartz (Caesarstone, Silestone): Non-porous, doesn't need sealing. Standard dish soap and water is effective. Avoid abrasive cleaners.
Sealing
Natural stone (not engineered quartz) should be sealed annually or as directed by the stone type. Apply a penetrating sealer according to the manufacturer instructions. The water bead test: if water beads on the surface, the seal is good; if it absorbs, reseal.