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How to Install Basalt Tiles: A Step-by-Step Guide for Floors, Walls, and Outdoor Spaces

Are you ready to elevate your space with the timeless elegance and durability of basalt tiles? At Citadel Stone, we proudly supply heavy‑duty basalt tiles across the United States, perfect for enhancing interiors and exteriors alike. Whether you're looking to revamp your floors, create stunning feature walls, or design inviting outdoor areas, our supreme basalt tiles provide an unbeatable combination of style and strength. In this comprehensive step-by-step guide, we will equip you with the knowledge to install basalt tiles effortlessly. From preparation to finishing touches, each phase of the installation process is crucial to achieving a seamless, professional look. Let’s embark on this journey together and transform your space into a beautiful sanctuary with Citadel Stone’s exceptional basalt tiles!

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Basalt

The toughest stone in the world
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9
$ Square Feet
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Basalt

The toughest natural stone in the world
2
5
$ Square Feet
  • Wholesale Price

Basalt

The toughest stone in the market
2
1
$ Square Feet
  • Wholesale Price
Popular

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Fundamental Technical Specifications for Basalt Tiles & Pavers

Technical ParameterStandardValueDescription
Density (g/cm³)S.N.S 13933.01Basalt has an exceptionally high density, making it significantly more durable and resistant to impact compared to other natural stones.
Water Absorption (%)S.N.S 13930.59With a very low water absorption rate, Black Basalt remains highly resistant to moisture and weather damage, perfect for both outdoor and wet area applications.
Compressive Strength (N/mm²)S.N.S 139616.41The impressive compressive strength ensures that Basalt can bear heavy loads without cracking, making it ideal for high-traffic and commercial projects.
Flexural Strength (N/mm²)S.N.S 139410.03High flexural strength provides added durability, making Black Basalt resilient under pressure or bending, ideal for driveways, walkways, and heavy-duty applications.
Abrasion Resistance (mm)S.N.S 11690.91Basalt’s superior abrasion resistance ensures that the tiles maintain their finish and texture even with extensive foot traffic, ideal for both residential and commercial use.
Modulus of Rupture (N/mm²)S.N.S 139511.02The modulus of rupture is exceptionally high, meaning Black Basalt can endure significant stress and pressure without cracking or breaking, perfect for harsh climates and demanding environments.

You can book a free consultation at any time, with no fee commitments required.

Available Thickness Options for Black Basalt Tiles

Thickness OptionsDescription
1.5 cm (0.59 in)Perfect for indoor applications, providing a sleek.
2 cm (0.79 in)Versatile thickness ideal for both indoor settings and areas with light foot traffic outdoors.
3 cm (1.18 in)Common choice for patios, offering a balance of strength and aesthetics for moderate outdoor use.
4 - 6 cm (1.57 - 2.36 in)Suitable for regular outdoor applications such as walkways and patios, offering good durability.
7 - 10 cm (2.76 - 3.94 in)Highly durable thickness, perfect for driveways and high-traffic areas where heavy use is expected.
11 - 15 cm (4.33 - 5.91 in)Built for heavy-duty environments, ideal for high-impact areas that require robust, long-lasting materials.
16 - 20 cm (6.30 - 7.87 in)Ideal for custom or wholesale orders, providing maximum durability for industrial and heavy-load applications.

Basalt Pavers: Key Features and Benefits

PropertyDescription
Three Times HarderBlack Basalt is three times harder than limestone, sandstone, or granite.
Low MaintenanceEasily maintained and cleaned, making it perfect for long-term use.
Global PopularityThe most popular natural stone for hard landscaping projects worldwide.
Cost EfficiencyBasalt is typically expensive, but Citadel Stone offers it at an affordable price point.
LongevityBlack Basalt will last indefinitely, maintaining its original condition over time.
Harsh Climate SuitabilityThe ideal choice for projects in harsh climates due to its resilience.
Versatile ApplicationsPerfect for both private and commercial projects, indoors or outdoors.
Aesthetic AppealFeatures an attractive, unique black color that enhances any design.
Low Water AbsorptionBoasts a low water absorption rate, making it durable in wet conditions.
Hand-Selected QualityCitadel Stone hand-selects the most durable and beautiful Black Basalt tiles for customers.

Versatile Basalt Tile Sizes to Suit All Design Requirements

Basalt Tile SizesMetric (cm)Imperial (in)
Small Format30 x 30 cm12 x 12 in
Medium Square40 x 40 cm16 x 16 in
Standard Rectangle30 x 60 cm12 x 24 in
Large Square60 x 60 cm24 x 24 in
Extra-Large Rectangle60 x 90 cm24 x 36 in
Custom SizesCustom options available on request

Versatile Applications of Basalt: Extremely Durable Solutions for Harsh Climates

Application AreaSuitable UsesDetails
IndoorFlooring, WallingIdeal for residential and commercial spaces, adding a natural, elegant look.
OutdoorFlooring, WallingDurable in outdoor conditions, perfect for patios, walkways, and facades.
WallingIndoor & Outdoor WallingEnhances both interior and exterior walls with a timeless, natural texture.
FlooringIndoor & Outdoor FlooringNon-slip and heat-resistant, suitable for high-traffic areas and pool decks.

Free Basalt vs. Sandstone, Granite, and Limestone Comparison – Discover the Superior Stone for Your Project

PropertySyrian BasaltSandstoneGraniteLimestone
HardnessThree times harder than limestone, sandstone, or graniteSofter stone, prone to scratches and wearHard, but not as durable as basaltSofter than basalt, can wear over time
DurabilityExtremely durable, resistant to harsh conditionsLess durable, prone to weathering and erosionDurable but can crack under stressLess durable, prone to cracking and weathering
MaintenanceVery low maintenance, easy to cleanRequires more frequent cleaning and careLow maintenance, but can stain easilyHigh maintenance, especially in wet conditions
Water AbsorptionVery low absorption, ideal for wet conditionsHigh water absorption, prone to stainsLow absorption, but not as resistant as basaltHigh absorption, especially in porous varieties
Aesthetic AppealAttractive dark color, ideal for modern designsWarm, earthy tones, but can be unevenClassic appearance, but may appear too uniformNeutral tones, but may discolor over time
Weather ResistanceExcellent for harsh climates and extreme weatherProne to damage in extreme climatesWeather-resistant but less flexible than basaltPoor resistance in extreme weather conditions
CostMore affordable than typical high-end stonesGenerally inexpensive but less durableExpensive due to high demand and rarityOften affordable, but lacks durability
StrengthHigh compressive strength, ideal for high-traffic areasWeaker, especially under heavy loadStrong but can be brittleLess strong under pressure
VersatilitySuitable for both private and commercial projects, indoors & outdoorsBest for indoor use or decorative featuresExcellent for countertops, but not ideal for outdoor useCommonly used for flooring but not ideal for high-traffic areas

Endorsed by Top Stone Experts Worldwide

Trusted by Top Stone Experts Around the Globe

One Supplier, Endless Possibilities for Basalt Tiles!

Unlock the potential of your spaces with our luxurious range of basalt tiles, ideal for both residential and commercial applications. As a premier basalt tile supplier, we provide a diverse selection of textures, and finishes to suit any design vision. We sell basalt premium slabs typically starting as low as $2.1 per square foot – call now today for a no obligation quotation. Transform your environment with our high-quality basalt tiles, where each piece offers durability and aesthetic appeal tailored to your specific needs.

Alternative Products Available

Product NameDescriptionPrice per Square Foot
Travertine TilesBeautiful natural stone with unique textures$8.00 - $12.00
Marble TilesLuxurious and elegant, available in various colors.$10.00 - $15.00
Granite TilesExtremely durable and perfect for high-traffic areas.$7.00 - $12.00
Slate TilesRich colors and textures; ideal for wet areas.$6.00 - $10.00
Porcelain TilesVersatile and low-maintenance, mimicking natural stone.$4.00 - $8.00
Ceramic TilesAffordable with a wide variety of designs.$3.00 - $6.00
Quartzite TilesStrong and beautiful, resistant to stains.$9.00 - $14.00
Concrete PaversCustomizable for patios; durable and cost-effective.$5.00 - $9.00
Glass TilesStylish, reflective, and brightening.$15.00 - $25.00
Composite TilesEco-friendly options made from recycled materials.$5.00 - $10.00

Amazing Prices for First-Rate Stone—Check Out Citadel Stone Today!

Instant Quote & Immense Value

Table of Contents

Basalt tiles, renowned for their durability, natural beauty, and low maintenance, are an excellent choice for a wide range of applications—from sleek indoor floors and walls to rugged outdoor patios and walkways. However, installing basalt tiles requires careful planning, proper substrate preparation, and the right installation techniques to ensure long-lasting results. This in-depth guide will walk you through every step of the process, covering everything from initial planning and substrate preparation to adhesive selection, tiling, grouting, and finishing touches.

Whether you’re a DIY enthusiast or a professional contractor working in the USA, this guide is designed to provide clear, actionable instructions that help you achieve a flawless basalt tile installation.


1. Introduction

Basalt is a natural volcanic stone prized for its strength, low porosity, and elegant dark hues that range from deep grays to rich charcoals. Its inherent durability makes it suitable for high-traffic areas and outdoor applications where weather resistance is key. However, because our distinguished basalt tiles are dense and require precise installation techniques, following a detailed step-by-step process is essential to ensure proper adhesion, alignment, and long-term performance.

In this guide, we will cover:

  • Planning and Design: How to prepare your space and layout your design.
  • Substrate Preparation: Steps for preparing floors, walls, and outdoor surfaces.
  • Adhesive Selection: Choosing the right adhesive for basalt tiles.
  • Tile Installation: Best practices for laying and aligning tiles.
  • Grouting Tips: How to grout basalt tiles for a seamless finish.
  • Finishing Touches: Sealing, cleaning, and maintenance advice.
Step-by-step installation of basalt tiles
A detailed guide showing each step of the basalt tile installation process, from substrate prep to final grouting.

2. Planning and Design

Before you start installing basalt tiles, thorough planning and design are crucial. This initial phase helps ensure that your project runs smoothly and that the final outcome meets your aesthetic and functional goals.

2.1. Assessing Your Space

  • Measure the Area: Accurately measure the square footage of the space where the basalt tiles will be installed. This includes floors, walls, or outdoor areas.
  • Determine the Layout: Sketch a floor plan or wall layout. Consider the tile pattern you want to achieve (e.g., straight lay, diagonal, herringbone) and plan for any cuts or custom placements.
  • Identify Environmental Factors: For outdoor installations, assess the exposure to sunlight, moisture, and temperature fluctuations. For indoor projects, note traffic patterns and high-use areas.

2.2. Gather Tools and Materials

Make sure you have all the necessary tools and materials on hand before starting:

  • Tools: Tape measure, chalk line, notched trowel, rubber mallet, level, wet saw or tile cutter, grout float, sponge, mixing paddle.
  • Materials: Basalt tiles, appropriate adhesive (thinset mortar or epoxy-based adhesive), grout (sanded or unsanded, based on joint width), sealant (if required), primer or backer board (for walls or uneven surfaces).

2.3. Safety and Preparation

  • Personal Protective Equipment (PPE): Wear safety glasses, gloves, and a dust mask when cutting tiles or mixing adhesives.
  • Workspace Preparation: Ensure that your work area is clean, well-ventilated, and free from debris. Cover any nearby surfaces to protect them from spills and dust.

3. Substrate Preparation

A properly prepared substrate is the foundation of any successful tile installation. The substrate must be flat, clean, and structurally sound.

3.1. For Floor Installations

  • Existing Surface Evaluation: Determine whether your existing floor is concrete, wood, or another material. For concrete floors, check for cracks or moisture issues.
  • Cleaning: Remove all dust, dirt, grease, and debris. For concrete, use a vacuum and mop; for wood, ensure the surface is free of any loose particles.
  • Leveling: If the floor is uneven, use a self-leveling compound to create a flat, even surface. This is crucial to avoid lippage (uneven tile edges).
  • Moisture Barrier: In damp areas, consider applying a moisture barrier or primer recommended by your adhesive manufacturer.

3.2. For Wall Installations

  • Surface Preparation: Ensure that the wall surface is smooth, free of peeling paint or wallpaper, and securely attached. A cement backer board is often used to create a stable, moisture-resistant surface.
  • Reinforcement: If the wall is subject to vibrations or minor movements, use mesh tape or another reinforcement method to prevent cracking of the tiles.

3.3. For Outdoor Installations

  • Weather Considerations: Ensure that the outdoor surface is stable, level, and properly drained. Poor drainage can lead to tile shifting or water damage.
  • Surface Preparation: Clean and remove any vegetation or loose debris. For patios or walkways, ensure that the substrate (often concrete or compacted gravel) is firm and even.
  • Additional Sealants: In areas with high moisture, an extra waterproofing layer may be applied before the tile installation.
Proper substrate preparation for basalt tiles
Clean and level substrate preparation is essential for a long-lasting basalt tile installation.

4. Adhesive Selection

Choosing the right adhesive is critical for basalt tile installation. Our basalt—the backbone of great designs is a dense, heavy stone, so the adhesive must provide excellent bond strength.

4.1. Thinset Mortar

  • Suitable for Floors and Walls: Thinset mortar is a cement-based adhesive that works well for most basalt tile installations.
  • Advantages: It offers strong adhesion, is versatile, and works well with underfloor heating systems.
  • Application: Use a notched trowel to spread a uniform layer of thinset on the substrate, ensuring good coverage for each tile.

4.2. Epoxy Adhesives

  • When to Use: Epoxy adhesives are ideal for installations in areas with high moisture, heavy traffic, or where extra bond strength is needed.
  • Advantages: They provide superior adhesion and chemical resistance, and are less prone to cracking.
  • Considerations: Epoxy adhesives can be more expensive and have a shorter working time, so they require precise application.

4.3. Adhesive Tips

  • Mixing: Follow the manufacturer’s instructions for mixing the adhesive. Use a mixing paddle attached to a drill for uniform consistency.
  • Consistency: The adhesive should have a peanut butter-like consistency—neither too runny nor too stiff.
  • Application: Apply adhesive in small sections at a time to prevent it from drying out before the tiles are set.

5. Tiling Process

With your substrate prepared and adhesive chosen, you’re ready to begin laying the artisan basalt tiles. This process involves careful layout, placement, and alignment to achieve a professional finish.

5.1. Dry-Laying the Tiles

  • Plan Your Layout: Before applying adhesive, dry-lay the tiles to determine the best arrangement and to make any necessary cuts. This helps avoid awkward cuts and ensures a balanced look.
  • Mark Reference Lines: Use a chalk line to create straight reference lines along the center and edges of the installation area. This will help maintain alignment as you lay the tiles.

5.2. Applying Adhesive and Laying Tiles

  • Spread the Adhesive: Using a notched trowel, spread a thin, even layer of adhesive over a small area of the substrate. Work in manageable sections.
  • Set the Tiles: Place the non-slip basalt tiles onto the adhesive, pressing firmly to ensure full contact. Use a slight twisting motion to embed the tile into the adhesive.
  • Maintain Consistent Gaps: Use tile spacers to ensure uniform gaps between tiles. These gaps will later be filled with grout.
  • Check Alignment: Continuously check that the tiles are level and aligned with your reference lines. Adjust as necessary before the adhesive sets.
  • Use a Level: Place a level on top of several tiles periodically to confirm that the surface is even.

5.3. Special Considerations for Different Surfaces

  • Floor Installations: Ensure that the tiles are evenly pressed into the adhesive and that there is no lippage. A rubber mallet can help gently tap tiles into place.
  • Wall Installations: For vertical surfaces, work from the bottom up. Use a level and temporary supports if needed to hold the tiles in place until the adhesive sets.
  • Outdoor Installations: Consider the effects of weather. It’s best to install outdoor tiles in mild weather conditions. Use outdoor-rated adhesives and grouts that can withstand freeze-thaw cycles.
Grouting basalt tiles for a seamless finish
Expert grouting tips ensure a smooth, durable finish for your basalt tile project, both indoors and outdoors.

6. Grouting Tips

Once the tiles are set and the adhesive has cured (follow the manufacturer’s recommended curing time), the next step is to grout the joints between the basalt tiles.

6.1. Selecting the Right Grout

  • Type of Grout: Choose between sanded or unsanded grout based on the width of your joints. For wider joints (typically over 1/8 inch), sanded grout is recommended for better stability.
  • Color Matching: Select a grout color that complements or contrasts with your basalt tiles, depending on your design preferences.
  • Epoxy Grout: In high-moisture or high-traffic areas, consider using epoxy grout for its enhanced durability and stain resistance.

6.2. Grouting Process

  • Mix the Grout: Follow the manufacturer’s instructions to mix the grout to the proper consistency. Use a grout float or trowel to mix thoroughly.
  • Apply the Grout: Using a rubber grout float, spread the grout diagonally across the tile surface to push the grout into the joints. Ensure that the joints are fully filled.
  • Remove Excess Grout: After filling the joints, use the edge of the float to scrape off excess grout from the tile surface.
  • Clean the Tiles: Wait about 10 to 15 minutes, then use a damp sponge to gently wipe the surface of the tiles. Rinse frequently with clean water. Avoid removing grout from the joints.
  • Curing: Allow the grout to cure according to the manufacturer’s instructions before exposing it to heavy traffic or moisture.

6.3. Finishing Touches

  • Sealing the Grout: Once the grout has fully cured, apply a grout sealer to protect it from stains and moisture. This is particularly important for outdoor installations.
  • Polishing and Cleaning: Clean any remaining haze from the tiles using a soft cloth or microfiber towel. For a high-gloss finish, you might consider a tile polish recommended by the manufacturer.

7. Maintenance Tips for Basalt Tile Installations

Proper installation is only the beginning. Maintaining your basalt tile installation will ensure its longevity and continued beauty.

7.1. Routine Cleaning

  • Daily/Weekly Cleaning: Sweep or vacuum to remove loose dirt and debris. Use a damp mop with a pH-neutral cleaner for regular cleaning.
  • Avoid Harsh Chemicals: Harsh chemicals or abrasive cleaning tools can damage the tile surface and grout, so stick to products recommended for natural stone.

7.2. Periodic Maintenance

  • Grout Sealing: Depending on the installation’s exposure to moisture and traffic, reseal grout lines every 1-2 years.
  • Inspect for Damage: Regularly inspect tiles for any signs of cracking or chipping and address repairs promptly to prevent further damage.
  • Outdoor Care: For outdoor installations, clean tiles after heavy rain or seasonal changes to prevent buildup of algae or mildew.

8. Troubleshooting Common Issues

Even with careful planning and execution, you may encounter challenges during or after installation. Here are some common issues and their solutions:

8.1. Uneven Tiles

  • Cause: Inadequate substrate preparation or uneven adhesive application.
  • Solution: Use a level during installation and adjust the bedding layer or adhesive as needed. Consider using leveling compounds if necessary.

8.2. Gaps Not Filling Properly

  • Cause: Incorrect grout consistency or premature drying.
  • Solution: Mix the grout to the proper consistency and work quickly to fill all gaps. Use a damp sponge to keep joints moist while grouting.

8.3. Grout Staining

  • Cause: Excess grout left on the tile surface or inadequate cleaning.
  • Solution: Clean tiles immediately after grouting with a damp sponge and, if needed, use a grout haze remover once the grout has cured.

8.4. Adhesive Issues

  • Cause: Incorrect adhesive mix or application method.
  • Solution: Ensure you follow manufacturer instructions closely. If adhesive fails to bond, allow extra curing time or consult with the supplier for troubleshooting tips.

9. Conclusion

Installing ultra-durable basalt tiles can transform your space into a durable, elegant, and low-maintenance work of art. With the natural beauty of basalt and its ability to withstand heavy foot traffic and harsh outdoor conditions, this material is ideal for floors, walls, and outdoor areas alike. By following these detailed, step-by-step instructions—from proper substrate preparation and adhesive selection to tile layout, grouting, and finishing—you can achieve professional results that stand the test of time.

Remember:

  • Plan Thoroughly: A detailed layout and accurate measurements set the stage for success.
  • Prepare the Substrate: A stable, clean, and level surface is essential for adhesion.
  • Choose the Right Adhesive: Whether you opt for thinset or epoxy, ensure it suits your environment.
  • Lay Tiles Carefully: Use dry-lay techniques and spacers to maintain alignment and consistent gaps.
  • Grout and Seal: Proper grouting and sealing protect your work and enhance longevity.

By paying attention to every detail of the installation process and following best practices, you will enjoy the beauty and performance of architectural basalt tiles in your home or business for years to come.

For additional expert advice, product recommendations, and inspiration for your next tiling project, visit Citadel Stone: the art of stone, perfected. With quality materials and proven techniques, you can bring your vision to life with confidence and ease.

Why Go Citadel Stone?

Free Comparison: Citadel Stone vs. Other Suppliers—Find the Best Value!

FeaturesCitadel StoneOther Stone Suppliers
Exclusive ProductsOffers exclusive Ocean Reef pavers, Shellstone pavers, basalt, and white limestone sourced from SyriaTypically offers more generic or widely available stone options
Quality and AuthenticityProvides high-grade, authentic natural stones with unique featuresQuality varies; may include synthetic or mixed-origin stone materials
Product VarietyWide range of premium products: Shellstone, Basalt, White Limestone, and moreProduct selection is usually more limited or generic
Global DistributionDistributes stones internationally, with a focus on providing consistent qualityOften limited to local or regional distribution
Sustainability CommitmentCommitted to eco-friendly sourcing and sustainable production processesSustainability efforts vary and may not prioritize eco-friendly sourcing
Customization OptionsOffers tailored stone solutions based on client needs and project specificationsCustomization may be limited, with fewer personalized options
Experience and ExpertiseHighly experienced in natural stone sourcing and distribution globallyExpertise varies significantly; some suppliers may lack specialized knowledge
Direct Sourcing – No MiddlemenWorks directly with quarries, cutting unnecessary costs and ensuring transparencyOften involves multiple intermediaries, leading to higher costs
Handpicked SelectionHandpicks blocks and tiles for quality and consistency, ensuring only the best materials are chosenSelection standards vary, often relying on non-customized stock
Durability of ProductsStones are carefully selected for maximum durability and longevityDurability can be inconsistent depending on supplier quality control
Vigorous Packing ProcessesUtilizes durable packing methods for secure, damage-free transportPacking may be less rigorous, increasing the risk of damage during shipping
Citadel Stone OriginsKnown as the original source for unique limestone tiles from the Middle East, recognized for authenticityOrigin not always guaranteed, and unique limestone options are less common
Customer SupportDedicated to providing expert advice, assistance, and after-sales supportSupport quality varies, often limited to basic customer service
Competitive PricingOffers high-quality stones at competitive prices with a focus on valuePrice may be higher for similar quality or lower for lower-grade stones
Escrow ServiceOffers escrow services for secure transactions and peace of mindTypically does not provide escrow services, increasing payment risk
Fast Manufacturing and DeliveryDelivers orders up to 3x faster than typical industry timelines, ensuring swift serviceDelivery times often slower and less predictable, delaying project timelines

Extra Benefits

Choosing Citadel Stone offers unique advantages beyond premium stone quality:

Exclusive Access to Rare Stones

Citadel Stone specializes in unique, regionally exclusive stones, sourced directly from the Middle East.

Transparent Pricing with No Hidden Costs

With no middlemen, Citadel Stone provides direct, transparent pricing that reduces unnecessary costs.

Flexible Customization for Bespoke Projects

Tailor your order to precise specifications, from sizes to finishes, ensuring your project aligns perfectly with your vision.

Streamlined Delivery and Reliable Stock Availability

Benefit from fast production and delivery timelines, designed to minimize delays and ensure reliable availability.

Top-performing World Leading Companies Choose Our Premium Natural Stones

Scale your project without breaking the bank

With unlimited tiles, features, and the fastest delivery options, What’s not to love? Say goodbye to unnecessary hassles!

Leading Stone Suppliers are Loving Citadel Stone!

Do not let this golden opportunity slip by to
source your stone tiles

DanielOwner
Thank you, Kareem. We received the order. The stones look great!
FrankOwner
You are a good businessman and I believe a good person. I admire your honesty, this is why I call you a good businessman.
Gemma CPrivate Project
Undoubtedly the price was the reason that we chose Citadel stone, in addition to the fact that you offer a white limestone that is hard to source. Your products are very good value for money by comparison with other companies. You have helped at every stage of the process and have been quick and reliable in your responses. It was a big risk for us to pay everything up front including shipping and not know the quality. You did make me feel that I could trust you and your company however and we are very happy with the tiles. They appear to have been finished to a very high quality of smoothness and I can't wait to see them once they have been laid. We need to see now how easy they are to fit and maintain, yet you also sealed them before shipment so we think that they will be very durable. Our building project has been delayed for a few months now so it may be sometime before we see them laid, but I promise that I will send photos as soon as we have them down. Thank you so much Kareem and your team, you have done a great job. I am hoping that we can pay for, and receive our second shipment in the not too far future, so that we can finish everything off. Wishing you well. Gemma

30-Day Satisfaction Guarantee

If you’re not 100% satisfied with Citadel Stone products, we’ll not ship your order. No hassle, no risk involved.

Free Basalt Slab Calculator: Simplify Your Project Planning with Accuracy

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Frequently Asked Questions

If your question is not listed, please email us at [email protected]

What substrate preparation is needed for Basalt Tile floors?
  1. Clean & Level: Ensure the subfloor (concrete, plywood, or backer board) is clean, dry, and level (use self-leveling compound for uneven surfaces).
  2. Moisture Test: For concrete, check moisture levels (<3% for adhesives).
  3. Layout Planning: Dry-lay tiles with spacers to plan cuts and minimize waste.
  4. Prime: Apply a primer for porous substrates.
    Citadel Stone’s Floor Prep Guide offers detailed tips.

Use a polymer-modified thin-set mortar for walls:

  • Interior Walls: Standard thin-set (e.g., Citadel Stone’s CS-200).
  • Wet Areas (e.g., showers): Waterproof, flexible mortar (e.g., CS-300).
  • Application: Spread adhesive with a ½-inch notched trowel, pressing tiles firmly.
    Avoid mastics—they can’t support Basalt’s weight.
  1. Base Prep: Excavate 6–8 inches; layer crushed gravel (4–6 inches) and sand (1 inch), compacted.
  2. Slope: Ensure ¼-inch per foot slope for drainage.
  3. Adhesive: Use exterior-grade thin-set mortar or set tiles on a sand bed.
  4. Grout: Opt for polymeric sand for flexibility and weed resistance.
    Include expansion joints every 8–12 feet.
  1. Wet Saw: Use a diamond-blade wet saw for precise cuts.
  2. Angle Grinder: For curves or small cuts, score and snap with a grinder.
  3. Safety: Wear goggles and gloves to handle sharp edges.
    Citadel Stone offers custom cutting services for complex projects.
  • Grout Type: Use sanded grout for joints >1/8 inch; unsanded for narrower joints.
  • Application: Press grout into joints with a rubber float, wiping diagonally.
  • Clean: Remove haze with a damp sponge after 15–30 minutes.
  • Seal: Apply grout sealer after 72 hours (e.g., Citadel Stone GroutGuard).
  • Before Installation: Seal the tiles’ backs to prevent adhesive staining (optional).
  • After Grouting: Apply a penetrating sealer (e.g., Citadel Stone SealPro) to the entire surface for stain and moisture protection.
  • Re-Seal: Every 3–5 years for outdoor tiles; 5–7 years indoors.