Specifications - Technical Properties
Grey Basalt is generally selected for its balance of aesthetics and performance. Exact values vary by quarry, finish, thickness, and fabrication method, so project-specific submittals should confirm final technical data.
Material type
Typical basalt performance range: Volcanic natural stone
Specification notes: Dense igneous stone suitable for interior and exterior use
Color range
Typical basalt performance range: Medium grey to cool grey
Specification notes: Natural variation expected
Surface character
Typical basalt performance range: Fine-grained to subtly mineral
Specification notes: Can appear more uniform than many sedimentary stones
Water absorption
Typical basalt performance range: Typically low
Specification notes: Suitable for freeze-thaw sensitive climates when properly detailed
Compressive strength
Typical basalt performance range: Typically high
Specification notes: Appropriate for heavy-use commercial applications
Abrasion resistance
Typical basalt performance range: Strong
Specification notes: Good choice for public-facing floors and paving
UV stability
Typical basalt performance range: Excellent
Specification notes: Natural stone color is stable outdoors
Slip resistance
Typical basalt performance range: Finish-dependent
Specification notes: Textured finishes improve wet-area suitability
Freeze-thaw durability
Typical basalt performance range: Generally strong
Specification notes: Confirm by source and finish for exterior paving
Heat retention
Typical basalt performance range: Moderate to high
Specification notes: Darker finishes can gain surface temperature in full sun
Available Sizes, Finishes, Thicknesses, and Waste Allowance
DOMVS should present Grey Basalt as a comprehensive specification category, not as a narrow tile-only offer. Include all commonly requested market formats plus custom fabrication capability.
Available sizes
Slab formats: approximately 48x96, 60x120, 63x126, and larger quarry-dependent slab sizes
Tile formats: 12x12, 12x24, 16x24, 18x18, 24x24, 24 x 36, 24x48
Large-format panels: 36x36, 36x72, 48x48, 48x96, and project-specific cut-to-size panels
Paver formats: 12x24, 16x24, 24x24, 24x36, 24x48
Mosaic formats: 1x1, 2x2, linear mosaics, herringbone mosaics, stacked strip mosaics, custom mosaic sheets
Landscape and architectural formats: planks, wall caps, stair treads, risers, pool coping, step blocks, curbs, cobbles, pavers, terrace modules, pedestal pavers
Custom capabilities: waterjet pieces, radius cuts, drain covers, trench grates, reception cladding panels, fireplace surrounds, shower components, monolithic vanity tops, furniture skins, custom edge pieces, and dimensional site elements
Available finishes
-Honed
- Flamed
- Flame waved
- Striated
- Brushed
- Flamed and brushed
- Sandblasted
- Bush-hammered
- Leathered
- Sawn
- Split-face
- Tumbled
- Acid-washed where available
- Grooved or anti-slip textured finishes
- Polished where appropriate for interior wall or low-slip-demand applications
- Custom finish development for commercial and hospitality programs
Available thicknesses
Tile and wall applications: 3/8 in, 1/2 in, 5/8 in
Flooring: 5/8 in, 3/4 in
Exterior paving: 3/4 in, 1-1/4 in, 1-1/2 in, 2 in
Pedestal pavers: 3/4 in, 1-1/4 in, 1-1/2 in, 2 in
Slabs and fabricated elements: 2 cm, 3 cm, custom build-ups
Landscape elements: 2 in and thicker, project-dependent
Waste allowance
Standard field installations: allow 10% waste
Diagonal or patterned layouts: allow 12% to 15% waste
Highly cut conditions or multiple penetrations: allow 15% to 20% waste
Custom fabrication or vein-sensitive layout review: confirm final overage during shop drawing review
Applications
Gray Basalt is appropriate for:
Interior flooring
- Lobby and corridor paving
- Feature walls
- Exterior wall cladding
- Ventilated facade systems
- Pool surrounds
- Spa environments
- Shower walls and floors
- Stair treads and risers
- Elevator lobbies
- Retail sales floors
- Hospitality public areas
- Luxury residential terraces
- Landscape paths and courtyards
- Rooftop terraces
- Public space paving
- Fireplace surrounds
- Kitchen and bath surfaces in appropriate finishes and thicknesses
Layout and Pattern Options
Gray Basalt performs well in both minimal and highly designed layouts.
Running bond
Stacked bond
Third bond
Ashlar
Modular pattern
Bookmatched slab feature walls where slab format applies
Large-grid monolithic paving
Basketweave mosaic applications
Herringbone
Chevron
Random linear
French pattern where custom cut sets are desired
Grid-set exterior paving with open joint concepts
Custom radial and geometric waterjet layouts
Performance Comparison
CriteriaGrey BasaltLimestoneMarblePorcelain PaverDurabilityHighModerateModerateHighSlip-performance potentialHigh in textured finishesModerateFinish-dependentHigh in exterior texturesFreeze-thaw suitabilityStrong when properly sourcedVaries widelyVariesStrongVisual uniformityModerate to highModerateModerate to high veiningHighHeat gain in sunModerateModerateModerateVariesCustom fabricationStrongStrongStrongLimited compared to stoneNatural material characterStrongStrongStrongSimulated
Installation Guidelines
Grey Basalt should be installed to substrate tolerances appropriate for stone and large-format material. Exterior and wet-area applications require slope, drainage strategy, movement joints, and mortar or pedestal system compatibility to be resolved before installation begins.
Verify lot blending before installation.
Dry-lay and review range, tone, and finish prior to setting.
Confirm slip-resistance targets for wet areas before final finish selection.
Use project-appropriate setting materials for basalt and substrate conditions.
Honor movement joints and perimeter movement requirements.
Mock up exterior paving and wall systems before full production.
For facades and heavy-format pieces, coordinate anchoring, support, and engineering requirements.
Seal only if the selected finish and use condition warrant it.
Pre-construction review is strongly recommended for commercial, hospitality, and exterior programs.
Care and Maintenance
Grey Basalt is generally low-maintenance when properly specified.
Remove abrasive debris regularly.
Clean with pH-neutral stone cleaners.
Avoid acidic or harsh chemical cleaners.
Use entrance matting in heavy-traffic interiors.
Reseal if required by the selected finish and exposure.
Test maintenance products on a sample before large-scale use.
For exterior paving, maintain joints and drainage pathways.
Frequently Asked Questions
Is Grey Basalt suitable for exterior paving?
Yes, especially in textured finishes such as flamed, sandblasted, bush-hammered, or brushed surfaces, subject to final technical review for the selected source.
Can Grey Basalt be used around pools?
Yes. Textured finishes are commonly specified for pool decks, coping, and wet-area transitions.
Is Grey Basalt available in custom sizes?
Yes. DOMVS offers cut-to-size programs, slabs, pavers, treads, coping, site elements, and custom fabrication.
Does Grey Basalt work in freeze-thaw climates?
It can, provided the selected material and assembly are appropriate and project details are engineered for exposure conditions.
Is it in stock?
DOMVS stocks select Grey Basalt programs for immediate delivery and can support short lead times on standard formats, with custom fabrication timelines confirmed per scope.
Why Choose DOMVS Surfaces
DOMVS Surfaces helps architects, designers, landscape architects, developers, and general contractors specify Grey Basalt with more confidence and less friction. We combine a curated architectural stone collection with in-stock availability, nationwide shipping, technical guidance, and proactive project support.
Dedicated project managers
Faster sample fulfillment
Material matching assistance
Pre-construction reviews
Mock-up consultation
Installation support
Short lead times on standard programs
Custom fabrication coordination for project-specific requirements
Request a Quote or Complimentary Consultation
Specify Grey Basalt with DOMVS for fast samples, technical guidance, and nationwide delivery. Request a quote or complimentary consultation for pricing, finish recommendations, custom sizing, mock-up review, and lead time confirmation.