Grey Limestone Hearth Slab

Direct-from-quarry dove grey limestone hearth slabs, stocked in three sizes with a machine-sawn edge. Calibrated to a 20–24 mm nominal thickness with a tactile, fine-textured face and sophisticated mid-to-light grey tones. Part of our Grey Limestone range and our Limestone Hearths range.

• 1200 × 380 × 20mm — front hearth section, approx. 26 kg per slab. Pairs with either chamber section below to make a T-shape hearth.
• 900 × 600 × 20mm — chamber section or standalone hearth, approx. 30 kg per slab.
• 900 × 450 × 20mm — chamber section, approx. 23 kg per slab.

• Calibrated 20–24 mm 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: Fit your hearth within 14 days of delivery. If a slab cracks in that time, we replace it free.
• Free Photo Service: A free photo of your exact slab before dispatch whenever sealing or cutting is added.
• Order a sample: Choose up to 2 free samples for a flat £5 delivery fee. Order your sample

Engineered with a calibrated 20–24 mm nominal thickness, a distinctive fine-textured surface, and machine-sawn edges, this high-grade grey limestone delivers exceptional structural density and thermal performance. Purpose-designed as the front or chamber section of a T-shape hearth set, or as a standalone hearth in its own right, for luxury fireplace hearths, stove pads, window sills, and interior architectural steps where you need clean geometry and reliable durability. Available nationwide as single slabs, bespoke cut-to-size pieces, or full wholesale crates for trade buyers across the UK.

• Dimensions: 1200 × 380 mm, 900 × 600 mm or 900 × 450 mm (+/- 2mm)
• Thickness: 20–24 mm nominal (Calibrated)
• Weight: Approx. 26 kg (1200 × 380), 30 kg (900 × 600), 23 kg (900 × 450) per slab
• Surface Finish: Tactile, matte fine-textured ("orange peel" feel)
• Edge Finish: 4-side machine sawn cut
• Colour Profile: Sophisticated mid-to-light grey tones with subtle natural variation and character
• 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)

Fit your hearth within 14 days of delivery. If a slab cracks in that time, we replace it free.

Need a size we don't stock? Limestone Cut to Size cuts a front hearth, a chamber, or both for a T-shape, each from its own slab. Every piece is cut, edge-dressed, cleaned and sealed. From £155 including the slab. Standard 14 days or Priority 7 days.

See how our cutting, finishing, and sealing services work for slate and limestone.

• 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