Grey Limestone Hearth Slab | 900×450×20mm

Direct-from-quarry Grey Limestone (900 x 450 x 20 mm). Engineered with a calibrated 20–24 mm nominal thickness, a tactile fine-textured surface, and crisp, machine-sawn edges. Sophisticated mid-to-light grey tones with subtle natural variation and character. Part of our Grey Limestone range and our Limestone Hearths range. Highlights Calibrated 20mm Nominal Thickness: Precision-calibrated to ensure a flat, consistent bed height for quick, seamless installation and level bedding. Textured Sawn Finish (Tactile Orange Peel Feel): Smooth natural texture with a modern straight-cut, sawn edge profile Machine-Sawn Edges: Precision-cut 4-side sawn edges provide crisp, clean lines for seamless jointing and a sharp, architectural frame around your stove or insert fire. 14-Day Crack Guarantee: If your slab cracks within 14 days of delivery (provided it is installed within that same 14-day window), we'll replace it completely free. Free Photo Service: Every premium-grade order includes a free dispatch photo of your exact slab sent straight to you before delivery. Standard-grade slabs also include this service whenever a custom cutting or finishing service is added. Order a sample: Choose up to 2 free samples for a flat £5 delivery fee. See the texture and quality in person before committing to a full slab. Order your sample Featuring contemporary clean lines and a smooth, minimalist aesthetic, these premium 900mm x 450mm x 20mm slabs are precision factory-sawn to deliver sharp, clean edges. Calibrated to a uniform 20mm thickness for effortless installation, they offer a stunning balance of timeless natural beauty that pairs seamlessly with both modern and traditional schemes. Technical Specifications Dimensions: 900 x 450 mm (+/- 2mm) Thickness: 20–24 mm nominal (Calibrated) Weight: Approx. 23 kg per slab Surface Finish: Tactile, matte fine-textured ("orange peel" feel) Edge Finish: 4-side machine sawn cut Colour Profile: Raw state Charcoal Grey; darkens to a deep, near jet-black when sealed Flexural Strength: 24.69 MPa (56 Freeze-Thaw Cycles) Water Absorption: 0.04% (Ultra-Low Porosity & Exceptional Frost Resistance) Slip Resistance: PTV 73 (Dry) / PTV 57 (Wet) Crack Guarantee If your slab cracks within 14 days of delivery (provided it is installed within that same 14-day window), we'll replace it completely free. Free Photo Service Every premium-grade order includes a free dispatch photo of your exact slab sent straight to you before delivery. Standard-grade slabs also include this service whenever a custom cutting or finishing service is added. In-House Workshop Finishing & Fabrication Packages Need custom cutouts, tailored edge profiles, or surface pre-treatments? Select from our workshop options before dispatch: Cutting Only • Factory Straight Cut (C-01 / C-02): Laser-guided precision sawn (+/- 1.50mm) with edge matching. Premium Signature Finish • Bespoke Profile Match (S-01): Custom edge reprofiling (pencil round, full bullnose) matching the sawn surface finish. • Multi-Stage Face & Edge Honing (S-02): High-grit diamond pad refinement to restore refined edges after custom workshop cuts. • K30 Chemical Deep Clean (S-03): Extracts micro-slurry and fine dust trapped during processing to ensure max sealer penetration. • Stovax Dressing Oil / Satin Sealer Treatment (S-04): Professional-grade pre-sealing that locks in the rich, dark finish and provides instant oil and water stain protection. See how our cutting, finishing, and sealing services work for slate and limestone. Ordering, Wholesale Crates & Nationwide Delivery Flexible Quantities: Buy individual slabs for precise cut-to-size hearth work, or full crates for trade project savings across the UK. Nationwide Logistics: Direct-to-site delivery via 3rd-party nationwide pallet networks. Offloaded by tail lift and delivered kerbside. Customer Quotes: Call 01908 46 46 56 or email drawings to sales@blueskystone.com