Castle Grey Marble Tiles

Grooved Natural Marble for Wet Areas Grooved Castle Grey Marble Tiles for Shower Floors and Bathroom Wet Areas Castle Grey Marble Shower Tiles combine neutral grey natural stone with precisely machined parallel grooves. The surface treatment creates stronger tactile differentiation than a flat polished tile and can also be coordinated with the intended water-flow direction. For shower-floor use, tile geometry should be developed together with the drain, slope, waterproofing system, substrate, grout joints, groove direction, threshold detail, and required slip-resistance standard. The word "anti-slip" should not be treated as a substitute for project-specific wet testing.   Request Quote E-mail KA UNITED WhatsApp Inquiry

Product Overview of Natural Grey Marble Tiles

Castle Grey Marble Bathroom Tiles are suited to interiors requiring a quiet grey natural-stone palette rather than bold high-contrast veining. Castle Grey typically presents soft grey coloration with subtle natural tonal and vein variation, allowing the groove pattern to become a visible design feature without making the surface overly busy.

The parallel grooves can be machined in one consistent direction across each tile. When several tiles are installed together, the groove lines can continue across adjacent pieces or change orientation according to the approved shower and bathroom layout.

Castle Grey Marble Grooved Tiles can be developed for shower floors, bathroom floors, wet-room transition zones, shower benches, spa areas, selected bathroom wall accents, and decorative linear stone surfaces.

The supplied thickness reference is 16–30mm. Final thickness should be selected together with groove depth, tile dimensions, substrate, support, drain geometry, floor build-up, handling method, and structural requirements.

Castle Grey Marble Anti-slip Tiles is a useful sourcing description for the grooved product form, but the actual level of slip resistance depends on groove geometry, finish, surface contamination, footwear or barefoot use, water conditions, cleaning, and the applicable test method. A wet-area project should specify the required test standard and acceptance value.

Natural marble varies from tile to tile. Shade, fine veining, mineral markings, pores, filled areas, repaired features, and the way the grooves intersect those natural features should be reviewed during factory sorting and dry laying.

Reference Sizes and Thickness of Castle Grey Marble

Reference	Approximate Inches	Typical Planning Direction	What Must Be Confirmed
600 × 300mm	Approx. 23.6 × 11.8 inches	Shower modules, bathroom floors, transition zones, wall accents, and drain-side layouts	Groove direction, drain location, slope, grout width, perimeter cuts, waterproofing, and support
900 × 600mm	Approx. 35.4 × 23.6 inches	Larger bathroom floors, spa zones, broad shower areas, walls, and reduced-joint layouts	Flatness, handling, slope transitions, drain integration, substrate, lifting, joints, and installation access
Thickness	16–30mm reference	Selected according to tile format, groove machining, application, support, and floor build-up	Finished thickness after calibration and grooving, remaining stone section, project loading, and substrate
Custom Sizes	Project specific	Drain modules, benches, thresholds, wall returns, perimeter pieces, and custom wet-room layouts	Approved drawings, stone yield, groove geometry, joint positions, installation sequence, and packing

Specifications at a Glance of Caslte Grey marble

Product Type	Grooved natural marble tiles for shower rooms, bathrooms, wet zones, and decorative interiors
Material	Natural Castle Grey Marble
Color Character	Soft light grey to medium grey with restrained natural tonal and vein variation
Reference Sizes	600 × 300mm and 900 × 600mm
Thickness Reference	16–30mm; final thickness subject to groove depth, tile size, substrate, application, and approved drawing
Surface Treatment	Parallel machine-cut grooves / fluted linear texture with project-specific spacing, width, depth, and direction
Wet-Area Performance	Grooved texture can increase tactile surface interaction; required slip performance must be verified by the specified wet test
Edge Options	Straight calibrated edges, project-specific perimeter cuts, drain cuts, mitred returns, or other approved edge details
Fabrication Services	Cutting, grooving, calibration, drain-side fabrication, edge finishing, numbering, dry laying, and project-specific packing
Applications	Villa bathrooms, hotel bathrooms, shower rooms, wet rooms, spa areas, selected bathroom floors and walls, and interior decorative stonework
View Category	KA UNITED Marble Tiles

 

 

Show groove width, spacing, depth, machining quality, grey marble tone, natural veins, surface texture, edge calibration, and finished groove transitions.

Parallel Groove Geometry Groove geometry affects both appearance and function. Narrow closely spaced lines create a finer architectural texture, while wider or deeper grooves create stronger shadow lines and more pronounced tactile variation. The remaining stone thickness beneath the groove must be sufficient for the selected tile dimensions and installation system. Groove depth therefore should not be specified independently from overall tile thickness. Groove ends should also be coordinated with exposed edges, drain openings, shower thresholds, perimeter pieces, wall junctions, and grout joints so the linear pattern finishes cleanly. Before bulk production, a physical grooved sample is useful for reviewing visual scale, foot feel, cleaning access, edge quality, water behavior, and the required slip test.

Shower Drainage and Groove Direction

Groove direction should be established together with the drainage strategy rather than selected only for visual effect. Linear drains, center drains, wall drains, and multiple-slope shower floors require different tile and groove planning.

For a linear drain, grooves may be aligned toward the drain where appropriate, but final water movement depends primarily on the correctly formed floor slope and waterproofed substrate.

For center drains, large-format 900 × 600mm pieces may require additional cuts or segmented slopes because one rigid flat tile cannot form multiple drainage planes without suitable fabrication and substrate preparation.

Grooves must not create unintended low points that retain water away from the drain. Shop drawings should identify the top surface elevations, slope direction, drain perimeter, cut lines, groove orientation, grout joints, and finished threshold level.

The tile surface, slope bed, waterproofing membrane, drain body, adhesive, grout, sealant, and perimeter movement joints should function as one coordinated wet-area assembly.

Tile Section, Drain Cuts, and Edge Details Custom wet-area tile production should be based on an approved plan and section rather than a simple overall room dimension. The drawing should identify tile thickness, groove depth, groove spacing, drain opening, falls, threshold, wall junction, waterproofing level, grout joint, substrate, adhesive bed, and any required edge profile. Drain-side pieces may require accurate straight cuts, mitred transitions, removable stone covers, or custom perimeter pieces depending on the drain system. Shower benches, curbs, niches, and wall returns can be fabricated from matching Castle Grey marble, but their exposed edges and water-shedding geometry should be coordinated separately from the main floor tiles. Final tolerances should reflect the installer's setting method and the actual drain, waterproofing, substrate, and site dimensions.

Show tile thickness, groove depth, linear drain cut, slope direction, threshold, edge treatment, substrate, waterproofing, joints, and installation drawing.

Wet-Area Slip Performance of Natural Grey Marble

Factor	Why It Matters	Project Action
Groove Width and Depth	Changes the amount of surface relief and the way the foot contacts the stone	Approve a machined sample before production
Base Surface Finish	Affects friction, cleaning, tactile feel, and appearance between the grooves	Specify the exact finish used on the tested sample
Water and Soap	Soap, shampoo, conditioner, oils, and residue can change real-world surface traction	Use the required wet-area test and maintain an appropriate cleaning regime
Barefoot vs Footwear Use	Different areas may be evaluated under different intended-use conditions	Confirm the project standard and required classification before ordering
Testing	"Anti-slip" is not a universal numerical performance level	Test the actual finish and groove specification using the standard required by the project

Custom Fabrication Options

Custom Item	Available Direction	Details to Confirm
Tile Size	600 × 300mm, 900 × 600mm, or project-specific cut-to-size dimensions	Room plan, drain, joints, slab yield, substrate, handling, and perimeter cuts
Thickness	Within the supplied 16–30mm reference range where suitable	Tile dimensions, groove depth, remaining stone section, loading, substrate, and project specification
Groove Geometry	Custom width, depth, spacing, direction, start point, stop point, and edge relationship	Slip-test requirement, cleaning, stone thickness, drain direction, visual scale, and sample approval
Drain-Side Fabrication	Linear-drain cuts, center-drain segments, removable covers, custom perimeter pieces, and fall-related cuts	Actual drain model, elevation, waterproofing, slope, access, grout, sealant, and installation method
Matching Stone Components	Shower curbs, benches, wall panels, niches, thresholds, skirting, and vanity details	Dimensions, water shedding, exposed edges, support, joints, finish, and vein direction
Dry Layout	Numbered arrangement by room, zone, row, tile, groove direction, and installation order	Grey-tone range, vein distribution, joints, drain pieces, perimeter cuts, and packing sequence

Bathroom and Shower Applications

Villa Shower Floors Grooved grey marble can coordinate with linear drains, glass screens, wall slabs, freestanding tubs, metal fittings, and neutral bathroom cabinetry.

Hotel Bathrooms Repeatable tile dimensions and factory numbering support room-by-room bathroom production where visual consistency and installation sequence are important.

Spa and Wet Rooms Linear texture can be coordinated with benches, shower zones, wall panels, thresholds, and other matching Castle Grey marble components.

Bathroom Feature Walls The same grooved treatment can be used decoratively on selected walls where a ribbed grey-marble texture is preferred over a completely flat surface.

Castle Grey and Recommended Marble Tile Comparison

Wet-Area Project Risk Control

• Approve actual Castle Grey marble samples and the acceptable grey-tone and vein range before bulk cutting.
• Confirm 600 × 300mm, 900 × 600mm, or custom finished tile dimensions from the bathroom setting-out drawing.
• Confirm final thickness together with groove depth so adequate stone remains beneath the machined texture.
• Approve groove width, depth, spacing, direction, termination, and base surface finish on a physical sample.
• Specify the required wet slip-resistance test method and acceptance requirement before production if the tile will be used on shower floors.
• Coordinate grooves with the actual drain, floor slopes, threshold, waterproofing, wall junctions, grout joints, and perimeter cuts.
• For large 900 × 600mm floor pieces, verify whether the shower geometry can be formed without conflicting multi-directional slopes.
• Confirm substrate flatness, waterproofing compatibility, full-support installation method, adhesive, grout, sealant, and movement joints.
• Dry lay tiles before packing to review tone variation, groove continuity, vein distribution, drain components, and installation sequence.
• Number custom pieces by room, zone, row, tile, and direction to reduce installation errors.
• Protect grooved faces, calibrated edges, corners, drain cuts, mitred pieces, and exposed details during transport.
• Do not describe the finished floor as guaranteed slip-proof without the project-required test result for the actual surface specification.

Factory Dry-Lay and Quality Inspection Before packing, grooved tiles can be laid in the intended sequence to review grey-tone distribution, groove alignment, vein balance, drain-side components, perimeter pieces, and project coding. Inspection should include overall dimensions, thickness, groove width and depth, groove spacing, edge calibration, squareness, drain cuts, surface finish, natural stone features, and quantity. Where the project specifies measurable slip performance, the tested sample should match the production surface specification rather than using a different groove or finish. Room-specific custom pieces should be clearly marked so groove direction and slope-related components are not reversed during installation. Pre-shipment records can document the dry layout, tile dimensions, groove details, component labels, surface range, packaging arrangement, and crate condition.

Show grooved tile dry lay, groove alignment, grey-tone sorting, thickness checking, drain pieces, dimensional inspection, numbering, or protective packing.

Care and Maintenance

Grooves require regular cleaning because soap residue, body oils, mineral deposits, shampoo, and other bathroom contaminants can accumulate inside the recessed lines.

Use a pH-neutral cleaner formulated for natural marble together with a suitable soft brush or non-abrasive cleaning tool that can reach the groove profile.

Avoid vinegar, acidic bathroom products, aggressive descalers, abrasive powders, rough pads, and chemicals not approved for natural marble. Marble can etch when exposed to acidic substances.

A compatible penetrating sealer may reduce absorption and make routine maintenance easier. It does not make marble waterproof, stain-proof, acid-proof, scratch-proof, or permanently slip-resistant.

The waterproofing system below the tiles remains essential even when the stone has been sealed. Sealing the marble is not a replacement for a correctly designed wet-area membrane and drainage system.

Completed Shower or Bathroom Project Reference This image position can show Castle Grey grooved marble installed in a luxury villa shower, hotel bathroom, wet room, spa suite, walk-in shower, or high-end residential renovation. A useful project image should show the groove direction, floor slope, linear or center drain, grout joints, thresholds, glass enclosure, wall finishes, matching stone components, sanitary fittings, lighting, and surrounding bathroom materials. The completed installation should demonstrate how the grooved surface integrates with drainage and the full wet-area system rather than presenting the tile only as an isolated stone sample.

Use a completed villa shower, hotel bathroom, wet room, spa, or residential project showing the grooved marble floor and drainage details in context.

Recommended Marble Tiles from KA UNITED

KA UNITED offers four related marble-tile directions for designers comparing Castle Grey with alternative natural-stone surfaces. Calacatta Marble Fluted Tiles use a bright white background and machined linear texture for decorative feature walls. Calacatta Borghini White Marble Subway Tiles provide a smaller rectangular format for shower walls, backsplashes, niches, and classic brick-bond layouts. Gray Emperador Marble Tiles offer another grey natural-stone direction for broader floor and wall applications without the same specialized grooved wet-area focus. Palissandro Marble Tiles introduce stronger directional stone movement for decorative walls, floors, bathrooms, and hospitality interiors. Together with Castle Grey, these products allow contractors and designers to compare color, tile format, texture, installation method, maintenance, wet-area suitability, visual movement, and project positioning.

Calacatta Marble Fluted Tiles White Calacatta marble with machined fluted texture for feature walls, bathrooms, hotel interiors, headboards, and decorative vertical surfaces. View More

Calacatta Borghini White Marble Subway Tiles Classic rectangular white marble tiles for shower walls, kitchen backsplashes, tub surrounds, niches, and luxury residential interiors. View More

Gray Emperador Marble Tiles Grey natural-marble tiles for floors, walls, bathrooms, hotels, villas, commercial interiors, and neutral architectural schemes. View More

Palissandro Marble Tiles Directional natural marble for feature floors, bathroom walls, villas, hotels, hospitality interiors, and decorative architectural surfaces. View More

FAQ About Castle Grey Marble Tiles

Final Product Overview

Request Custom Castle Grey Grooved Marble Tiles Send KA UNITED the bathroom plan, tile dimensions, thickness requirement, groove specification, required wet slip test, drain model, floor slopes, shower threshold details, matching stone components, quantity, destination, and project schedule. Request Quote E-mail KA UNITED WhatsApp Inquiry

Inquiry Checklist 1. Confirm tile size and thickness. 2. Provide groove width, depth, and spacing. 3. Provide the drain and shower layout. 4. Confirm required wet slip testing. 5. Confirm slope and waterproofing details. 6. Provide quantity and room coding. 7. Provide destination and schedule.