Black Basalt Bush-Hammered Stone

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Key Features

Bush-Hammered Texture for Wet Steps and Slopes The distinctive bush-hammered finish creates controlled surface texture through mechanical impact, producing uniform indentations and one of our most textured finishes. Bush-hammered is our pick for wet steps and slopes, and a popular choice around pools and in moisture-prone areas. The textured finish suits pool decks, spa surrounds and garden paths.

Volcanic Hardness & Exceptional Durability Basalt is formed from rapidly cooled volcanic lava, making it one of nature’s hardest natural stone materials with a Mohs rating of 6–7. This translates to outstanding abrasion resistance, minimal surface wear under heavy foot traffic, and the ability to withstand furniture weight, equipment placement, and intensive use without denting or marking. Expect long service life with proper installation.

Minimal Water Absorption Citadel Basalt absorbed just 0.59–0.69% water in a certified mill test, the lowest of the stones on our certificate, and less water in the stone means less water to freeze inside it. This characteristic makes bush-hammered basalt particularly well suited to cold climates where freeze-thaw cycles destroy limestone, sandstone, and some granites. We do not have a freeze-thaw cycle rating for our stone; we publish its measured absorption instead. The stone also resists staining from pool chemicals, food and beverage spills, and organic debris.

Chemical & Weather Resistance Pool chlorine, bromine, salt systems, de-icing chemicals, and environmental exposure have no effect on basalt’s silicate mineral composition. Unlike limestone that degrades in acidic conditions or concrete that deteriorates from chlorine exposure, basalt maintains structural integrity and surface quality indefinitely. Its charcoal-black colour runs through the stone rather than sitting in a surface coating.

Contemporary Charcoal-Black Aesthetics The sophisticated dark coloration creates dramatic visual contrast with pool water, light-coloured furnishings, rendered walls, and surrounding landscape elements. Basalt’s uniform colour consistency delivers predictable, cohesive results across large installations — without the colour-matching challenges sometimes associated with highly variegated natural stones.

Maintenance-Free Performance Basalt’s natural density eliminates sealing requirements in most applications. Routine maintenance is limited to sweeping and occasional hosing — no specialist products, coatings, or ongoing treatments required. The bush-hammered texture also helps conceal minor surface wear and light soiling that would be more visible on smooth finishes.

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Specifications

Available Sizes & Thicknesses

Custom fabrication available — non-standard sizes, special thicknesses, and project-specific dimensions upon request (minimum order quantities apply).

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Applications

Driveways Black Basalt Bush-Hammered Stone is an outstanding choice for driveway surfaces, combining the load-bearing strength required for vehicular traffic with a bold aesthetic that makes an immediate architectural statement. The heavy-duty 2″ and 2.5″ thicknesses, mortar-bonded to a reinforced concrete slab, are specifically suited to residential and commercial driveways, offering the compressive strength to handle repeated loading without surface degradation. The bush-hammered finish gives the drive a deep, even surface, while the consistent dark colouring resists the oil staining and surface marking that plagues lighter or more porous materials.

Patios & Terraces Transform outdoor living and entertaining spaces with a surface that balances contemporary sophistication with practical, everyday performance. Bush-hammered basalt resists the impact of furniture legs, grill feet, and heavy planters without marking, while its textured finish suits open, outdoor living spaces. Spills from food, wine, and grease are easily cleaned without leaving permanent staining — a significant advantage over limestone, travertine, or concrete alternatives in a high-use outdoor setting.

Pool Surrounds & Coping Bush-hammered basalt excels in pool environments, where constant water exposure calls for a textured, chemically stable stone. Bush-hammered is one of our most textured finishes and a popular choice for pool decks. Any paving can be slippery when wet. Finish, slope, drainage, sealer and footwear all play a part, so ask your designer to confirm local pool-deck and code requirements. Basalt’s total resistance to pool chlorine, bromine, and salt systems means there is no risk of surface degradation, discoloration, or structural deterioration over time. The deep black-charcoal tone creates a dramatic, high-contrast finish alongside blue or green pool water — a hallmark of contemporary pool design.

Garden Paths Create well-defined, visually striking pathways through garden and landscape settings. The dark tone of bush-hammered basalt offers strong contrast against lighter gravel mulches, planted borders, and lawn areas, while the textured surface adds depth and character underfoot. With no ongoing sealing or treatment required, garden paths laid in this material remain looking their best with minimal upkeep year after year.

Wall Cladding Black Basalt Bush-Hammered Stone makes a compelling exterior and interior wall cladding material. The textured surface and uniform dark tone create striking feature walls, boundary finishes, and architectural facades with genuine depth and materiality. The stone’s low porosity suits weather-exposed external elevations (it absorbed just 0.59–0.69% water in a certified mill test), while its consistent colour and finish provide a cohesive, high-end result across large vertical surfaces. Suitable for both ground-level and upper-storey cladding applications.

Interior Floors Indoors, bush-hammered basalt delivers a refined, architect-quality finish for hallways, open-plan living areas, utility rooms, and commercial interiors. Its textured face suits areas that may see wet tracking from outside or wet-room adjacency; keep polished finishes for dry indoor floors. The material’s hardness means it stands up to the rigours of daily domestic or commercial foot traffic without showing wear, while the dark, textured surface conceals minor dust and footfall marks between cleans.

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Layout & Pattern Options

Black Basalt Bush-Hammered Stone suits a wide range of installation patterns, from large-format minimalist grids to classic modular arrangements:

• Running Bond — offset horizontal pattern that creates directional flow and reduces visual weight
• Stack Bond — clean grid layout that emphasises geometric, contemporary design
• Herringbone — 90° or 45° angled arrangement offering maximum interlock strength; ideal for driveways and high-traffic paths
• Linear Plank — large rectangular formats laid in parallel rows to evoke a modern timber-deck aesthetic
• Modular Mix — combining multiple sizes to add visual interest and reduce on-site cutting waste

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Performance Comparison

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Maintenance Guide

Routine Care

• Sweep or blow clear of debris regularly to prevent organic build-up
• Hose down monthly or as needed to remove surface dust and residue
• Annual pressure washing at 1,500–2,000 PSI refreshes appearance
• No sealing, coating, or chemical treatments required

Stain Removal

• Oil or grease spills: treat with a commercial stone degreaser and rinse thoroughly
• Organic staining: responds well to a pH-neutral stone cleaner
• Most surface marks wash away given basalt’s extremely low porosity

Joint Maintenance (where applicable)

• Check polymeric sand joints annually
• Refill any eroded areas to maintain weed resistance and stability
• Properly installed joints require minimal ongoing attention

Winter Care

• Compatible with standard snow-clearing equipment
• De-icing salt and chemical treatments will not harm the stone
• No special winter preparation or protective measures needed

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Why Citadel Stone?

Premium Source Material — We source exclusively from select basalt quarries that produce consistent stone meeting rigorous standards for density, hardness, and colour uniformity.

Precision Bush-Hammering — Advanced pneumatic equipment ensures consistent texture depth and pattern uniformity across every piece, delivering a predictable texture and a professional finish on site.

Rigorous Quality Control — Multi-point inspection verifies dimensional accuracy, surface finish, structural integrity, and absence of defects prior to despatch.

Comprehensive Size Range — Our full size selection supports fast delivery for most standard requirements, with larger project volumes available to order.

Expert Technical Support — Decades of natural stone experience inform our material recommendations, quantity calculations, installation guidance, and design consultation services.

Custom Fabrication — Non-standard sizes, special thicknesses, and bespoke project requirements accommodated through our fabrication service.

Nationwide Delivery — Reliable shipping across the continental United States with careful packaging and fully coordinated logistics.

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Request a Quote or Consultation

Transform your project with volcanic stone engineered for texture, built for longevity, and designed to define a space.

Request a Free Consultation — Our experienced team provides material guidance, quantity calculations, pattern advice, installation best practices, and detailed project quotes tailored to your exact brief.

Trade & Professional Support — Landscape contractors, architects, and design professionals receive dedicated support, competitive trade pricing, full technical specifications, and coordinated project delivery at any scale.

Citadel Stone — Premium Natural Stone for Spaces That Endure

Product specifications and pricing are subject to change. Contact Citadel Stone for current availability and project-specific recommendations.