How to Clean Stone Wall Cladding?

Natural stone wall cladding is more than just a decorative element — it’s a long-term investment in style, durability, and the character of your space. Whether applied indoors to enhance living rooms and feature walls, or outdoors to elevate façades, garden walls, and patios, stone cladding instantly adds a touch of elegance and craftsmanship.

But like any surface exposed to the elements or daily wear, stone wall cladding needs proper care to maintain its beauty and strength over time. Dust, dirt, moisture, moss, or even simple neglect can dull the natural texture, stain the surface, or damage the structural integrity of the stone.

At Choice Stone Crafts, we believe that preserving the quality of your stone cladding doesn’t have to be complicated — it just needs the right knowledge and a bit of routine maintenance.

In this insightful guide, we’ll show you step-by-step how to safely clean different types of natural stone wall cladding, what materials to use (and avoid), and expert tips to keep your walls looking as stunning as the day they were installed.

Why Regular Cleaning of Stone Cladding is Essential?

Cleaning natural stone wall cladding isn’t just about visual appeal — it’s about preserving the quality and integrity of the material. Here's why routine maintenance is important:

• Prevents Discoloration: Dust, pollution, and moisture buildup can cause the stone’s surface to darken or change color over time.

• Avoids Biological Growth: Outdoor cladding is especially prone to moss, algae, or lichen growth if not cleaned regularly, especially in damp or shaded areas.

• Extends Lifespan: Proper care minimizes wear, chipping, and weather-related damage.

• Maintains Natural Texture and Finish: Stones like slate, sandstone, and limestone have unique textures that can lose their character when caked with grime.

• Increases Property Value: Well-maintained stone walls signal attention to detail and quality, which positively impacts resale value and overall aesthetics.

Step 1: Know Your Stone Type Before You Clean

Different types of natural stones react differently to cleaning solutions and techniques. Using the wrong product can etch, stain, or weaken the surface.

Here’s a quick guide to common cladding stones:

• Sandstone: A soft, porous stone that requires gentle cleaning and should never be soaked for long.

• Granite: Dense and durable, granite can handle slightly more aggressive cleaning but still needs pH-neutral cleaners.

• Marble: Sensitive to acids and harsh chemicals. Needs very gentle, pH-balanced cleaners.

• Slate: Textured and layered. It hides dirt well but can trap grime in its crevices.

• Limestone: Softer and more absorbent, prone to staining and erosion from strong cleaning agents.

• Quartzite: Very durable but can still lose its polish if cleaned with abrasive tools or acidic solutions.

Pro Tip: If you're unsure of the stone type, consult your supplier (like Choice Stone Crafts) or a stone specialist before starting the cleaning process.

Step 2: Gather the Right Tools and Materials

Using the right materials ensures safety for both the stone and yourself.

You’ll need:

• A soft-bristled brush (natural or nylon)

• Microfiber cloths or non-abrasive sponges

• pH-neutral stone cleaner or mild dish soap (never acidic or bleach-based)

• Warm water in a spray bottle or bucket

• A plastic scraper (for hardened dirt or algae)

• A clean dry towel

• Garden hose or spray nozzle (for exterior use)

Avoid anything with metal bristles or harsh abrasives, which can scratch or damage the surface.

Step 3: Step-by-Step Cleaning Procedure: How to Clean Stone Wall Cladding (Interior & Exterior)

Interior Stone Wall Cladding

• Dust or Vacuum First: Use a soft brush or vacuum with a brush attachment to remove loose dust and cobwebs.

• Mix Your Cleaner: Combine warm water with a few drops of a mild soap or stone-specific cleaner.

• Wipe with Care: Dampen a microfiber cloth or sponge, wring it out, and gently wipe the stone. Never let the stone stay too wet.

• Rinse: Use another damp cloth (just water) to wipe away the cleaning solution.

• Dry It Off: Immediately dry the surface with a clean towel to avoid water spots or streaks.

Exterior Stone Wall Cladding

• Pre-rinse the Surface: Use a garden hose to gently rinse off loose debris and dust.

• Apply Cleaning Solution: Spray or sponge on your diluted stone cleaner.

• Scrub Gently: Use a soft-bristled brush for areas with buildup, stains, or moss.

• Rinse Thoroughly: Wash off the soap using low to moderate water pressure. Avoid power washing delicate stones like limestone or sandstone.

• Let It Dry: Allow natural air drying, or pat down with towels to prevent streaking.

Step 4: Removing Stains, Algae, and Mold

For stubborn stains or organic growth (like algae or mildew), use a stone-safe mold remover or create a mixture of warm water with a few drops of hydrogen peroxide (only on harder stones like granite or quartzite).

Important:

• Avoid bleach or acid-based solutions.

• Always test on a hidden spot first.

• Rinse thoroughly and dry immediately.

Step 5: Sealing the Stone for Long-Term Protection (Optional but Recommended)

Sealing natural stone wall cladding adds a protective layer that repels moisture, resists staining, and reduces maintenance.

• When to Seal: After a thorough cleaning and complete drying. Usually recommended once every 1–3 years.

• What to Use: A breathable, water-based sealant designed for your specific stone type.

• How to Apply: Use a sponge or paint roller evenly. Let it absorb and wipe off excess after 15–30 minutes.

Consult with a stone care expert if unsure about which sealant to use.

What to Avoid When Cleaning Stone Wall Cladding

• Vinegar or lemon-based cleaners (acidic, can etch surfaces)

• Bleach or ammonia (harsh chemicals that may discolor or weaken the stone)

• Steel wool, scouring pads, or wire brushes

• High-pressure washers (on soft stones)

• Soaking water on porous surfaces like sandstone or marble

General Maintenance Tips for Wall Stone Cladding

Maintaining the natural elegance of stone wall cladding requires more than just an occasional clean — it involves a few proactive steps that help preserve its color, texture, and longevity over the years. Whether your cladding is on an exterior façade exposed to weather or enhancing an indoor feature wall, these general maintenance tips will help keep it looking timeless:

1. Dust and Wipe Regularly (Interior Cladding)

For indoor stone wall cladding, regular dusting with a soft cloth or microfiber duster helps prevent grime buildup. A light wipe with a damp cloth every few weeks will also remove any surface smudges, especially in high-touch areas like living rooms or entrances.

2. Rinse with Water (Exterior Cladding)

For outdoor applications, rinse the surface with clean water using a garden hose every few weeks to remove dust, pollen, or urban pollution particles. Avoid high-pressure washers unless specifically recommended for your stone type, as they can erode surface layers over time.

3. Use a pH-Neutral Stone Cleaner

Avoid harsh chemicals or acidic cleaners like vinegar or bleach. These can stain or damage the stone’s surface. Instead, opt for pH-neutral stone cleaners that are formulated specifically for natural stones like sandstone, slate, marble, or granite. Always follow the manufacturer's instructions and spot test first.

4. Seal the Surface (If Applicable)

Some types of porous stone—like limestone or sandstone—benefit from occasional sealing. Sealers help prevent moisture absorption, stains, and growth of algae or mildew. Typically, sealing is needed once every 1 to 2 years, depending on exposure and the stone variety.

5. Watch for Signs of Mold or Algae (Outdoor Areas)

Exterior cladding exposed to moisture or shade can develop green or black patches over time. These should be cleaned promptly with a mild biocide or stone-safe moss remover. Scrub gently with a soft-bristle brush to protect the stone’s finish.

6. Prevent Water Pooling

Ensure proper water drainage around exterior cladding, especially near patios, garden walls, and base areas. Standing water can cause long-term damage, encourage mold growth, or stain the stone permanently.

7. Protect from Direct Heat Sources (Indoor)

If your stone cladding is placed near fireplaces, stoves, or kitchen ranges, use a protective barrier or shield to prevent thermal damage or discoloration due to heat exposure.

8. Address Stains Promptly

If you notice oil, food, or organic stains (like from leaves or plant matter), address them as soon as possible. Dab gently with a stone cleaner or mild soap and rinse with clean water. The longer stains sit, the harder they become to remove.

Key Takeaways

Proper cleaning and maintenance can make your natural stone wall cladding last for decades while retaining its original charm. Whether indoors or outdoors, stone surfaces add timeless elegance — and with just a bit of care, you can keep them looking spectacular year after year.

If you're planning to install stone cladding or need professional help selecting the best products for your project, reach out to Choice Stone Crafts. We offer expert guidance along with high-quality, customizable natural stone solutions for homes, commercial spaces, and landscape features.