Product Overview
Thassos White 12" x 24" Polished Marble Tile is a premium natural stone quarried exclusively on the island of Thassos, Greece. Globally recognized as the benchmark for pure white natural stone, Thassos marble features a brilliant crystalline structure that reflects light with minimal background veining.
Unlike Italian marbles such as Carrara or Calacatta that feature heavy gray or gold veining, Thassos delivers a clean, uniform, snow-like field. The 12" x 24" rectangular format offers a modern architectural scale suitable for offset, stacked, or herringbone installation patterns across primary bathroom walls, luxury floors, shower surrounds, and kitchen backsplashes.
Technical Specifications
| Technical Property |
Value / Specification |
Standard / Compliance |
| Material Type |
Authentic Natural Greek Marble (Calcite) |
100% Natural Stone |
| Origin |
Thassos Island, Greece |
Premium Select Grade |
| Nominal Dimensions |
12" x 24" (30.5 cm x 61 cm) |
Rectified / Straight Cut |
| Thickness |
3/8" (~10 mm Calibrated) |
Standard Residential/Commercial Profile |
| Surface Finish |
High-Gloss Polished |
Mirror-Like Reflective Finish |
| Weight per Sq. Ft. |
Approx. 5.50 lbs / sq. ft. |
Heavy Natural Stone |
| Shade / Tone Variation |
V1–V2 (Uniform to Slight Variation) |
Natural Crystalline Field |
| Water Absorption |
Low to Moderate (< 0.5%) |
ASTM C97 |
| Flexural Strength |
High Density / Structural Stability |
ASTM C880 |
| Applications |
Interior Floors, Walls, Shower Surrounds, Backsplashes, Fireplaces |
Interior Dry & Wet Areas |
Recommended Applications
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Primary Bathrooms & Wet Rooms: Floor-to-ceiling shower surrounds, vanity feature walls, and main floor applications.
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Kitchen & Living Spaces: High-impact kitchen backsplashes, entryway floors, and fireplace surrounds.
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Commercial Interiors: Boutique hotel lobbies, luxury retail spaces, and executive suite accents.
Installation & Handling Guidelines
⚠️ CRITICAL WARNING: TRANSLUCENT MARBLE MORTAR & SEALING PROTOCOL
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Pure White Thinset Mortar Only: Thassos is a highly crystalline, translucent marble. Never use gray thinset mortar, as it will show through the stone and permanently discolor the installation. Always set using an ANSI A118.4 / A118.15-compliant pure white polymer-modified thinset (such as MAPEI® Ultraflex 2 White or LATICRETE® 254 Platinum White).
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100% Mortar Coverage (Flat-Trowel Technique): Back-butter every tile and flat-trowel the mortar bed to eliminate trowel ridges. Ridges will shadow through the translucent stone under light.
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Sealing Strategy: Apply a premium solvent-based impregnating penetrating sealer (such as Miracle Sealants 511 Impregnator or StoneTech® BulletProof®) prior to grouting and again after full grout cure to protect the crystalline matrix from moisture and pigment absorption.
Professional Recommendations
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Grout Selection: Pair with an unsanded grout in "Bright White" or "Avalanche" to achieve a seamless, continuous stone field.
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Lippage Prevention: Use a mechanical tile leveling system to maintain flush edges across the 24-inch tile length.
Care & Maintenance
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Routine Cleaning: Clean exclusively with pH-neutral stone cleaners (e.g., StoneTech® Revitalizer). Never use acidic cleaners, vinegar, bleach, or abrasive pads on marble.
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Spill Protection: Wipe up acidic liquids (wine, juice, vinegar, hair dye) immediately to prevent surface etching on the polished finish.
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Resealing Schedule: Reapply an impregnating penetrating sealer every 12 to 18 months in high-use wet areas.
Design Profile
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Aesthetic Inspiration: Ultra-Luxe Minimalist, Modern Grecian, High-Definition Contemporary, and Monochromatic Sanctuaries.
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Layout Ideas: Vertical stack bond for visual height, traditional 1/3-offset brick bond, or mixed with Thassos 2" Hexagon mosaics on shower floors.
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Complementary Accents: High-gloss white cabinetry, polished chrome or champagne bronze fixtures, and natural light oak millwork.
Frequently Asked Questions
Why is white thinset mortar required for Thassos White marble?
Thassos White is a naturally translucent crystalline marble. If gray mortar is used, the dark pigment will shadow through the stone body, causing the brilliant white tile to appear muddy or gray. Always use a premium pure white thinset mortar.
Can 12" x 24" polished Thassos marble be installed on shower floors?
While 12" x 24" polished marble works exceptionally well on shower walls, polished large-format tile can become slippery underfoot when wet. For shower pan floors, smaller formats with frequent grout lines (such as a 2" hexagon or 1" x 1" mosaic) are recommended for enhanced traction and proper drainage sloping.
How does Thassos White compare to Carrara or Calacatta marble?
Carrara and Calacatta marbles are famous for their prominent gray, charcoal, or gold veining. Thassos White is prized for being the purest, whitest natural marble in the world, featuring a uniform snow-like background with a light-refracting crystalline structure and virtually no veining.
Is Thassos White tile suitable for outdoor swimming pools?
No. Natural calcite marble is sensitive to pool chemicals, acid washing, and freeze-thaw moisture expansion. Thassos White is engineered strictly for interior dry and wet wall/floor applications.
