Granite floor tiles are suitable for floors and walls because granite offers strong abrasion resistance. Some varieties benefit from sealing, while others are dense enough to need little additional treatment. A polished granite tile can be slippery when wet, making honed or textured finishes preferable in exposed areas. Standard tiles are offered in many modular sizes, and outdoor use is common with a suitable surface treatment. Clean with neutral stone cleaner and avoid harsh chemicals.
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Size, Finish & Slip Control
Hard-Wearing Stone for Walls and Floors
These 30 × 30 × 1.5 cm polished Black Galaxy granite tiles can be used on walls and suitable floors, but polished surfaces require caution in wet areas because water reduces grip. Granite's hardness makes it appropriate for high-traffic interiors, while exterior specifications generally favour honed or textured finishes. Shade variation should be reviewed across cartons before installation so the gold-fleck pattern is distributed naturally.
Hard-Wearing Stone Surface
Black Galaxy Granite Tile Material and Finish
Black Galaxy Granite Tile is cut from natural granite whose polished jet-black surface contains distinctive fine gold flecks rather than a printed decorative pattern. Because the mineral distribution develops naturally, individual tiles can show slight changes in shade, sparkle density and pattern across an installation. A polished finish intensifies the black background and reflects light strongly, making the metallic flecks more prominent, while a honed finish creates a softer low-sheen surface and reduces visual reflectivity while retaining the stone’s underlying mineral character.
Format & Installation
Granite Floor Tiles for Residential and Commercial Surfaces
Each 30 × 30 × 1.5 cm Black Galaxy granite tile weighs 3.6 kg, making the format practical for modular floor or wall layouts without the handling demands of very large panels. Larger tile sizes can reduce grout lines on floors, while walls may benefit from smaller or lighter modules depending on fixing conditions; commercial floors should be planned around substrate capacity, traffic and joint layout rather than simply choosing the largest available tile.
Polished Black Granite Tile Slip Considerations
Polished Black Galaxy is suitable for dry interior floors, but wet zones should use a finish with verified traction rather than relying on polished granite for grip.
Outdoor Granite Tile Finish Selection
Exterior Black Galaxy should use a texture appropriate to weather and wet exposure rather than the polished finish normally preferred for dry interiors.
Black Galaxy Stone Tile Shade Blending
A straight grid gives the 30 cm Black Galaxy tiles a formal appearance, while modular or staggered layouts can create more movement across larger floor areas.
Product Overview
Black Granite Wall Tile Product Details
These Black Galaxy Granite tiles have a polished jet-black surface with fine gold flecks, measuring 30 × 30 × 1.5 cm and weighing 3.6 kg each. They can serve walls or dry interior floors; sealing depends on actual absorption, and the installation substrate must be stable and properly prepared.
| Water Absorption | Approx. 0.256% water absorption by weight for Black Galaxy granite |
|---|---|
| Flexural Strength | Approx. 14.9 MPa flexural strength to ASTM C880 for Black Galaxy granite |
| Compressive Strength | Minimum 131 MPa compressive strength when tested in accordance with ASTM C170/C170M |
| Shade Variation Rating | V2 moderate shade variation; pieces should be dry-laid and blended from multiple boxes before fixing |
| Tile Calibration Tolerance | Calibrated thickness tolerance of ±1 mm and finished face-dimension tolerance of approximately ±1.5 mm |
| Recommended Joint Width | 3 mm nominal joint width for calibrated interior granite tiles |
| Substrate Flatness Tolerance | Maximum 3 mm substrate deviation beneath a 2 m straightedge before tile installation |
| Adhesive Coverage | Minimum 95% adhesive contact, including full coverage at every tile edge and corner |
| Edge Rectification | Precision rectified edges with face-size tolerance of approximately ±1 mm for consistent 2–3 mm joints |
| Movement Joint Spacing | Provide movement joints at maximum 4.5 m intervals internally and at perimeters, structural joints, thresholds and substrate transitions |
Performance & Cleaning
Maintaining Natural Granite Floor Tiles
Remove grit regularly so foot traffic does not abrade the finish, and select a textured surface where wet-area traction is important. Seal only when the granite’s absorption warrants it, keep grout clean with compatible neutral products and specify a finish and installation system approved for exterior exposure when used outdoors.
Surface Performance
Why Choose Black Galaxy Granite Flooring Tile
Black Galaxy granite flooring tile offers four factual advantages: strong abrasion resistance for regular foot traffic, durable natural stone suitable for floors and walls, distinctive gold-flecked appearance within a dark surface, and compatibility with multiple finish options depending on slip requirements. Polished tiles are best kept to dry interiors, while textured finishes are more suitable for exposed areas.
- High Abrasion Resistance
Black Galaxy granite withstands repeated surface wear well, making it suitable for demanding floor and wall applications.
- Natural Gold Flecks
Black Galaxy granite contains natural gold-toned mineral flecks that contrast clearly against the polished jet-black surface.
- Wall Floor Suitable
Black Galaxy granite tiles can be used on both walls and floors when the selected finish suits the traffic and moisture conditions.
- Multiple Finish Choices
Black Galaxy granite can be supplied in polished, honed, flamed or other textured finishes to suit different wall, floor and exterior conditions.
Project Supply
Custom Granite Tile Formats
Custom Black Galaxy granite tiles can be cut to project-specific dimensions, with polished, honed or other suitable finishes selected according to wall, interior-floor or exterior requirements. Order quantities should be planned by carton or pallet with shade and block selection controlled where consistency matters, while the substrate must be properly prepared before professional installation; this specification discipline also applies to manufactured surfaces such as blanco city quartz.

Technical Reference
Natural Granite Tile Specifications
Check the granite tile specifications for sealing guidance, slip considerations and intended installation use before selecting a finish for your project. This helps distinguish where the polished surface is appropriate and where a different treatment may be preferable for moisture or exterior exposure.
Product details
Specifications, care, delivery and FAQ
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Cleaning: Sweep or vacuum abrasive grit regularly, damp-mop using pH-neutral stone cleaner, rinse detergent residue and dry high-traffic areas, clean grout with a nylon brush, blot oils and colored spills promptly, avoid acidic cleaners abrasive powders wax buildup and dirty mop water
Daily Care: Sweep or vacuum grit daily, wipe spills promptly, damp-mop with pH-neutral stone cleaner, rinse residue and dry polished areas, use entrance mats and padded furniture feet, avoid acids abrasive powders excessive detergent and wax buildup
- Avoid acidic cleaners
- avoid abrasive grit accumulating
- avoid hollow or poorly supported installation
- avoid dragging unpadded furniture
- avoid applying sealer over dirty or damp tiles
Maintenance: Vacuum abrasive grit regularly, damp-mop using pH-neutral stone cleaner, rinse detergent residue, inspect grout and movement joints, replace worn furniture pads, reassess sealing when liquids begin absorbing
Handling: Wear grip gloves, lift tiles with both hands, carry large formats vertically, use compatible suction cups, stack on flat supported pallets with clean spacers, never drag polished faces together
Which grout colour will blend best with polished Black Galaxy granite tiles without overpowering the gold flecks or making every tile joint visually obvious?
Use a charcoal, very dark grey or black grout close to Black Galaxy’s background rather than matching its gold flecks. A dark neutral joint visually recedes and allows the gold mineral pattern to remain dominant, while pure contrasting white creates a strong grid. Test cured samples because some black grouts dry grey or leave haze on polished granite. Select a non-staining grout compatible with natural stone, keep joints narrow and consistent where substrate tolerances allow, and clean residue before it hardens on the reflective surface.
Is polished black granite too slippery for bathroom floors, and what finish or slip treatment would make it safer when wet?
Polished Black Galaxy can be slippery on a wet bathroom floor and should not be selected without a documented wet-slip rating. A honed, leathered, fine-flamed or professionally treated textured finish generally provides better traction, though each changes the stone’s appearance and cleaning behaviour. Antislip chemical treatment must be specifically compatible with granite and tested because it can alter gloss or colour. Combine the chosen finish with correct drainage, manageable tile sizes, suitable grout joints and bath mats; sealing alone does not improve traction.
How can lippage be controlled during installation when the reflective black granite surface makes even minor height differences highly visible?
Use a flat, properly prepared substrate, calibrated tiles, suitable large-format mortar and levelling clips where appropriate. The installer should back-butter tiles, check each piece continuously with straightedges and control joint width; reflective black granite should be inspected under low-angle lighting before the adhesive cures because very small height differences become obvious.
Does dense Black Galaxy Granite require sealing after installation, and what absorption test can determine whether an impregnating treatment will provide any genuine benefit?
Dense Black Galaxy Granite may absorb so little water that sealing offers no benefit and can leave streaks or residue. Test a clean, dry spare tile or inconspicuous installed area by leaving several drops of water on it for about 10–15 minutes, then wipe them away; if no temporary darkening appears, impregnation is generally unnecessary, but if the stone darkens, trial a penetrating sealer on a sample and confirm that it does not alter the polished appearance.
How should Black Galaxy granite tiles be rotated and blended before installation so their gold flecks appear evenly distributed rather than forming obvious directional clusters?
Open tiles from several boxes, identify any directional mineral flow and dry-lay a large representative area before fixing. Rotate selected pieces by 90 or 180 degrees and distribute gold-rich and quieter tiles evenly, avoiding clusters or repeated patterns; number the approved arrangement so installation follows the layout rather than one box at a time.
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