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Zellige — Frequently Asked Questions

41 questions about caring for zellige

What is the difference between an impregnator and a sealer/coating?

An impregnator (like MN Stain-Stop or MN Basic Protection) penetrates into the stone pores and works from within. It does not change the surface appearance and allows the stone to breathe (water vapour can still pass through). A sealer or coating (like TC Sealant) forms a visible layer on top of the surface, creating a film finish. Impregnators are generally preferred for natural stone as they maintain the natural look and breathability, while coatings are sometimes used on cotto/terracotta for a specific aesthetic effect.

Should I wax or impregnate my cotto floor?

Both are valid — it depends on the look you want. Traditional wax system (TC Classic Primer + TC Classic Wax): creates a warm, satin patina that deepens over time. Authentic Italian look. Needs more maintenance (Cotto Easy-Clean, annual wax top-up). Modern impregnation (TC Impregnator): invisible protection, less maintenance, more practical. Better for kitchens and wet areas. Important: do NOT mix systems. If switching from wax to impregnation, strip all wax first with WAX-OFF.

When should I use MN Power-Clean vs KF Intensive Cleaner?

MN Power-Clean is formulated for natural stone — optimised for marble, granite, limestone, etc. KF Intensive Cleaner is formulated for ceramic tiles, cotto, and clinker. Both are alkaline intensive cleaners. If you have a natural stone surface → MN Power-Clean. If you have ceramic/porcelain tiles, cotto, or clinker → KF Intensive Cleaner. Both are safe on all surfaces (alkaline), but each is optimised for its specific surface category.

How long should I leave Anti-Slip on the surface?

Contact time is critical and varies by surface type: Marble/limestone/calcareous stone: 5-8 minutes maximum (acid-sensitive). Granite/basalt/slate: 10-15 minutes (acid-resistant). Porcelain/ceramic tiles: 10-15 minutes. Always test on a small area first to check the effect. Shorter time = less texture change, less anti-slip effect. Longer time = more texture change, more anti-slip effect. Rinse very thoroughly after the contact time.

Recommended: Lithofin Anti-Slip

How do I remove cement haze left after tile installation?

For ceramic/porcelain tiles: use Lithofin KF Cement Residue Remover, undiluted or diluted 1:3 for light haze. Apply, leave 5 minutes, scrub, rinse thoroughly. For acid-resistant natural stone (granite, slate): use Lithofin MN Builders' Clean diluted 1:3. For acid-sensitive stone (marble, limestone, bluestone): use MN Builders' Clean diluted 1:5 to 1:10, pre-wet the surface first, and work quickly. Always rinse very thoroughly after treatment.

How do I get rid of mould in my bathroom grout?

Spray Lithofin KF Mildew-Away directly onto the mouldy grout lines. Leave 15-30 minutes. Scrub with an old toothbrush or grout brush. Rinse thoroughly. For deeply embedded mould in silicone joints: the silicone may need to be removed and replaced with mould-resistant silicone. Crucially: improve ventilation! Run the extractor fan during and 15 minutes after showering, open windows daily. Without better ventilation, mould will always return.

How do I remove limescale from my bathroom tiles?

On ceramic/porcelain tiles: Lithofin KF Ceramic-Clean is perfect — apply, leave 5-10 minutes, scrub, rinse. Safe and very effective. On granite/slate/basalt: KF Ceramic-Clean or MN Builders' Clean diluted — these stones are acid-resistant. On marble/limestone: DO NOT use acid-based limescale removers! Use Lithofin MN Power-Clean (alkaline) with gentle scrubbing. For heavy limescale on marble: carefully use a plastic scraper, then MN Power-Clean. Prevention: squeegee after showering.

My cotto floor has yellowish wax build-up — how do I fix it?

This happens when multiple wax layers are applied without removing the old ones, or when wax is applied too thickly. You need to strip completely and start fresh. Apply Lithofin WAX-OFF undiluted. Leave 15-30 minutes. Scrub vigorously with stiff brush or scrubbing machine. Remove dissolved wax with clean cloths. Rinse. Repeat 2-4 times until all old wax is gone (the surface should look uniform). Then start fresh: TC Classic Primer, let dry, then TC Classic Wax in thin coats, buffing each one.

How do I clean and protect dirty grout lines?

Step 1: Clean with Lithofin KF Grout Cleaner — apply directly to grout lines, leave 5-10 minutes, scrub with a brush. Step 2: For mouldy grout, use Lithofin KF Mildew-Away first. Step 3: Rinse thoroughly and allow to dry. Step 4: Apply Lithofin KF Grout Protector to seal the clean grout lines — this prevents rapid re-soiling and water absorption. The combination of cleaning + protecting gives much longer-lasting results than cleaning alone.

What is the difference between porcelain and ceramic tiles?

Both are fired clay products, but porcelain is fired at higher temperatures (1200-1300°C vs 1000-1100°C for ceramic), making it denser, harder, and less water-absorbent (< 0.5% vs 3-6% for ceramic). Porcelain is suitable for outdoor use and heavy-traffic areas. Ceramic is typically used indoors. For care purposes, both are treated similarly with KF line products. Key difference: unglazed porcelain can still absorb stains and may need KF Protective Impregnator.

Recommended: Lithofin KF Protective Impregnator

I just had new stone installed — what should I do first?

Wait for grout/mortar to cure (5-7 days for most, 7-14 days for cotto). Then: 1) Remove cement haze with appropriate cleaner (MN Builders' Clean for stone, KF Cement Residue Remover for tiles). 2) Rinse thoroughly and allow to dry completely (24-48 hours). 3) Apply appropriate impregnator (MN Stain-Stop for stone, KF Protective Impregnator for tiles, TC Impregnator for cotto). 4) Remove excess within 10-15 minutes. 5) Allow 24 hours to cure before use.

Can I use a pressure washer on my stone?

Yes, but with caution. Keep minimum 30cm distance from the surface. Use a fan nozzle, not a point nozzle. Soft stone (sandstone, limestone, cotto) is more vulnerable — use lower pressure (max 100 bar). Hard stone (granite, basalt, slate) can tolerate higher pressure. Never aim at joints at close range — this can wash out joint sand/mortar. Never pressure wash polished stone (will damage the polish). Chemical pre-treatment with ALGEX or Outdoor Cleaner reduces the need for high pressure.

My floor looks hazy/cloudy after mopping — what is wrong?

This is almost always caused by product build-up from using the wrong cleaner. Supermarket floor cleaners often contain wax, silicone, or surfactants that leave a residue that builds up with every clean. Solution: deep clean with Lithofin MN Power-Clean (for stone) or KF Intensive Cleaner (for tiles) to strip the residue. Then switch to the correct daily product: MN Wash & Clean for stone, KF Conditioning Cleaner for tiles, or EASY-CARE for any surface. These products are residue-free.

What is the difference between cotto and terracotta?

The terms are often used interchangeably, but there are differences. Cotto traditionally refers to Italian hand-made or artisan-produced tiles, typically irregular, highly porous, and fired at lower temperatures. Terracotta is a broader term for any fired clay tile. Machine-made terracotta is more uniform and slightly less porous than artisan cotto. For care purposes, both are treated identically — they are the most porous common flooring materials and MUST be sealed. Use TC line products for both.

Recommended: Lithofin TC Impregnator

How do I protect outdoor stone from frost damage?

Frost damages stone when water inside the pores freezes and expands. Prevention: 1) Seal with a breathable impregnator (MN Stain-Stop or MN Basic Protection) — this prevents water from entering while allowing moisture to escape. 2) Ensure proper drainage slope (min 1-2%) so water doesn't pool. 3) Keep stone free of leaves and debris that trap moisture. 4) Re-seal before winter. Most susceptible: sandstone, limestone, cotto. Most resistant: granite, basalt, slate. New concrete must cure 28 days before sealing.

When should I use Stainstop PLUS instead of MN Stain-Stop?

Lithofin Stainstop PLUS is the universal version — it works on natural stone, tiles, engineered stone, AND cotto/terracotta. Use it when: 1) You have multiple surface types and want one product. 2) You are unsure about your surface type. 3) You need premium protection on mixed installations. MN Stain-Stop is specifically optimised for natural stone and gives the best results on marble, granite, limestone, etc. For pure natural stone projects, MN Stain-Stop is the better choice.

What are the advantages of machine cleaning versus manual cleaning for stone floors?

Machine cleaning is generally more efficient and can cover larger areas in less time compared to manual cleaning. It also provides a deeper clean, which is essential for maintaining the integrity of stone surfaces. Using products like Lithofin KF Intensive Cleaner with a machine can enhance the cleaning process.

What is the best maintenance routine for restaurant floors?

Restaurant floors require a robust maintenance routine due to spills and high traffic. Daily cleaning with Lithofin MN Easy-Clean, weekly deep cleaning with Lithofin KF Intensive Cleaner, and monthly sealing with Lithofin MN Stain-Stop will keep the floors in excellent condition. Regularly check for any damage to address issues promptly.

What is the best way to maintain tiles in a shopping center?

For tiles in a shopping center, implement a maintenance schedule that includes daily cleaning with Lithofin KF Intensive Cleaner and weekly inspections for damage. Use Lithofin MN Stain-Stop for sealing to protect against stains and ensure the tiles remain attractive and safe for shoppers.

What is the difference between NanoTOP and Stain-Stop?

NanoTOP provides a protective layer that enhances the surface's water repellence and stain resistance. Stain-Stop, on the other hand, is specifically formulated to prevent stains from penetrating the stone. Use NanoTOP for ongoing protection and Stain-Stop for immediate stain prevention.

Recommended: Lithofin NanoTOP, Lithofin Stain-Stop

What surfaces is the PL line suitable for?

The PL line is designed for various surfaces, including natural stone, ceramic, and concrete. It provides effective cleaning and maintenance solutions tailored to the specific needs of these materials. Use the PL line for versatile stone care.

Recommended: Lithofin PL Line

What are the applications of Abra-CLEAN?

Abra-CLEAN is a versatile cleaner suitable for various surfaces, including natural stone, ceramic, and glass. It effectively removes dirt, grease, and stains without damaging the surface. Use it for regular cleaning or tough stain removal.

Recommended: Lithofin Abra-CLEAN

How does Multi-Seal compare to Stain-Stop?

Multi-Seal provides a stronger, long-lasting seal for porous surfaces, while Stain-Stop is effective for immediate stain prevention. Use Multi-Seal for enhanced protection on surfaces that require more durability. Both products are excellent for stone care but serve different purposes.

Recommended: Lithofin Multi-Seal, Lithofin Stain-Stop

What is the difference between Stainstop PLUS and regular Stain-Stop?

Stainstop PLUS offers enhanced protection against stains and is suitable for high-traffic areas. Regular Stain-Stop is effective for general use but may not provide the same level of durability. Choose Stainstop PLUS for areas that require extra care and protection.

Recommended: Lithofin Stainstop PLUS, Lithofin Stain-Stop

What should I do for the first clean after installing a new floor?

For the first clean after installation, use Lithofin Wexa to remove any residues from adhesives or grout. This ensures that your new floor looks its best and is properly maintained from the start. Always follow the manufacturer's instructions for best results.

Recommended: Lithofin Wexa

When should I strip old coatings from stone?

You should strip old coatings when they become discolored or start to peel. Use Lithofin KF Strip to effectively remove old coatings before applying a new protective layer. Always ensure the stone is clean and dry before reapplying any coatings.

Recommended: Lithofin KF Strip

How can I ensure HACCP compliance in my commercial kitchen?

To ensure HACCP compliance, it is essential to maintain a high standard of cleanliness. Use Lithofin KF Clean & Care for effective cleaning of surfaces without leaving harmful residues. Regularly check and maintain slip resistance with Lithofin Anti-Slip products to ensure safety in food preparation areas.

Recommended: Lithofin KF Clean & Care, Lithofin Anti-Slip

What are the regulations regarding slip resistance for commercial floors?

Slip resistance regulations vary by region but generally require a minimum coefficient of friction. To meet these standards, it is advisable to treat floors with Lithofin Anti-Slip, which enhances grip and reduces the risk of slips and falls. Regular testing and maintenance are also recommended to ensure compliance.

Recommended: Lithofin Anti-Slip

What are the advantages of machine application versus hand application for cleaning?

Machine application offers consistency and efficiency, especially in large areas, while hand application allows for more detailed work in intricate spaces. For optimal results, consider using Lithofin products with both methods. For instance, Lithofin Wexa can be applied with a machine for large areas and by hand for edges and corners.

Recommended: Lithofin Wexa

What specific challenges do commercial kitchens face in stone care?

Commercial kitchens often deal with high levels of grease and food stains. Using Lithofin KF Clean & Care can effectively remove these residues while ensuring food safety. Regular application of Lithofin Stain-Stop can also protect surfaces from staining and make cleaning easier.

Recommended: Lithofin KF Clean & Care, Lithofin Stain-Stop

How should outdoor stone surfaces be maintained in commercial settings?

Outdoor stone surfaces require specific care to withstand weather conditions. Use Lithofin Outdoor Cleaner for effective cleaning and Lithofin Stain-Stop for protection against stains. Regular maintenance is essential to prevent issues like algae and moss growth, ensuring safety and aesthetics.

Recommended: Lithofin Outdoor Cleaner, Lithofin Stain-Stop

What personal protective equipment (PPE) is required when using Lithofin KF Cement Remover?

When using Lithofin KF Cement Remover, it is essential to wear gloves, safety goggles, and a mask to protect against splashes and fumes. Ensure that you are in a well-ventilated area to minimize inhalation risks. Always read the product label for specific PPE recommendations.

Recommended: Lithofin KF Cement Remover

How can I ensure child and pet safety when using Lithofin products?

To ensure child and pet safety when using Lithofin products, always apply the products in a well-ventilated area and keep them out of reach during and after application. It is advisable to wait until the treated area is completely dry before allowing children or pets to access it. Always check the product label for specific safety instructions.

Recommended: Lithofin MN Easy-Clean

Why is ventilation important during the application of Lithofin products?

Ventilation is crucial during the application of Lithofin products to prevent the accumulation of harmful fumes and to ensure a safe working environment. Open windows and doors, or use fans to enhance airflow. This is especially important when using products like Lithofin KF Grout Remover, which can release strong vapors.

Recommended: Lithofin KF Grout Remover

What are the key highlights from the MSDS for Lithofin products?

Key highlights from the MSDS for Lithofin products include information on hazards, first aid measures, handling and storage recommendations, and environmental precautions. Always review the MSDS before using any product to ensure safe handling and compliance with safety regulations.

Recommended: Lithofin KF Grout Remover

What precautions should be taken when using Lithofin products in temperature extremes?

When using Lithofin products in temperature extremes, it is important to follow the manufacturer's guidelines for optimal application conditions. Avoid using products in freezing temperatures or extreme heat, as this can affect their effectiveness and safety. Always allow products to acclimate to room temperature before use.

Recommended: Lithofin MN Easy-Clean

Why are my zellige tiles staining despite being glazed?

Zellige glaze is intentionally imperfect — it has fine crazing (hairline cracks) that are part of the artisan character. These micro-cracks absorb liquids and stain. Seal with Lithofin MN Stain-Stop before grouting and again after. Accept that some patina development is part of zellige's charm.

How do I clean zellige tiles without damaging the glaze?

Use only soft cloths and pH-neutral cleaners like Lithofin MN Wash & Clean. Never use abrasive pads or cream cleansers — zellige glaze is relatively soft and scratches easily. Avoid acidic and strongly alkaline cleaners that can attack the glaze.

The grout between my zellige tiles keeps getting dirty. How do I keep it clean?

Zellige typically has wider joints (3-5 mm) than standard tiles, making grout more visible and harder to keep clean. Seal the grout with Lithofin MN Stain-Stop after installation. For routine cleaning, use Lithofin MN Wash & Clean. Re-seal grout annually in kitchens and bathrooms.

Can I use zellige tiles in a shower?

Yes, but with precautions. Seal tiles and grout thoroughly before first use. Squeegee walls after each shower to prevent limescale. Clean weekly with Lithofin MN Wash & Clean. Avoid all acidic bathroom cleaners. Expect some colour variation over time — that's part of the handmade character.

How do I remove limescale from zellige tiles?

Carefully. The glaze crazing means acid can penetrate and stain. Use Lithofin KF Cement Residue Remover diluted 1:10 (very mild), apply for maximum 2 minutes, and rinse immediately. Test on a spare tile first. Better approach: prevent limescale by squeegeeing after each use and using Lithofin MN Wash & Clean regularly.

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