Contact COIT for a professional cleaning!

Natural stone adds elegance and value to your home or business. From granite countertops to slate patios, each stone type brings its own charm—but also its own cleaning needs. In this guide, we’ll walk you through how to clean stone safely and effectively, answer your most pressing questions, and help you avoid common mistakes that can lead to damage.

Know Your Stone

Not all stone is created equal. Here’s a quick guide to common types of natural stone and what makes them unique:

What Is the Best Thing to Clean Stone With?

The safest way to clean stone is with a pH-neutral cleaner made specifically for natural stone. Here’s what you should keep in mind: 

• Use: Stone-safe cleaner (e.g., Granite Gold, StoneTech), warm water, microfiber cloth
• Avoid: Vinegar, lemon juice, bleach, ammonia, harsh detergents
• Bonus: Use a soft-bristle brush for textured stone or grout

How to Clean Stone Surfaces Indoors

1. Start with Dust or Dry Debris

Wipe surfaces with a dry microfiber cloth or vacuum using a brush attachment to remove dust and grit.

2. Spray Gently

Use a pH-neutral stone cleaner or mix warm water with a drop of mild dish soap. Spray lightly on the surface.

3. Wipe and Blot

Use a clean cloth to wipe the surface. Then blot with a dry towel to prevent water spots.

4. Rinse and Repeat

If needed, rinse with plain water to remove any soapy residue.

5. Dry Immediately

Leaving water behind can cause limescale or staining, especially near faucets or plant pots.

How to Clean Exterior Stone

Outdoor stone surfaces like patios, walkways, and retaining walls need a different approach:

1. Sweep First Remove loose dirt, leaves, and gravel.
2. Use a Hose or Low-Pressure Washer Avoid power washers on softer stones like limestone or travertine.
3. Scrub with Stone-Safe Soap Mix warm water and stone soap. Use a long-handled brush to scrub large areas.
4. Rinse and Let Dry Ensure proper drainage to avoid moss or mildew buildup.

For tough mildew or black algae, use a cleaner labeled safe for exterior stone.

How to Restore Shine to Stone Surfaces

If your stone has dulled:

1. Clean the surface thoroughly with stone-safe cleaner.
2. Polish using a stone polish (test on a small area first).
3. Seal the surface to lock in shine.
4. Dust regularly to prevent grime buildup.
5. Call COIT if your stone has scratches, etching, or deep stains.

Remember, each type of natural stone – whether it's granite, marble, or slate – has its own care guidelines. Always check the stone's specific care instructions and when in doubt, consult an expert.

Call the PROs at COIT for a professional clean!