{"product_id":"hammer-stone-grey-porcelain-paving-slabs-600-600","title":"Hammer Stone Grey Porcelain Paving Slabs 600x600x20 mm (21.6 SQM, 60 Slabs Per Pack)","description":"\u003ctitle\u003eHammer Stone Grey Porcelain Paving Slabs 600x600x20mm | Paving \u0026amp; Slabs\u003c\/title\u003e\n\u003cmeta name=\"description\" content=\"Buy Hammer Stone Grey Porcelain Paving Slabs 600x600x20mm (21.6 SQM Pack). Features R11 anti-slip finish \u0026amp; frost-proof vitrified core for patios. Fast UK delivery!\"\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are Hammer Stone Grey porcelain paving slabs suitable for UK weather?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Hammer Stone Grey porcelain paving slabs are fully frost-resistant and designed to handle volatile UK weather shifts, heavy rain, and freezing winter temperatures without absorbing moisture or cracking.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are Hammer Stone Grey porcelain slabs slip-resistant?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. These premium flagstones feature a certified R11 slip-resistance rating, providing dependable anti-slip surface traction for outdoor patios, paths, and steps in wet conditions.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do porcelain paving slabs require sealing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. Porcelain paving slabs are non-porous and do not require ongoing liquid sealing treatments to maintain their stain, moisture, and fade resistance.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What size are Hammer Stone Grey porcelain paving slabs?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These slabs are precision-cut in a popular square 600x600mm size with a calibrated 20mm thickness, ideal for structural outdoor paving installations.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are porcelain paving slabs easy to clean?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Because vitrified porcelain is non-porous, dirt, organic leaf tannins, and mud sit loosely on top rather than embedding into the core. Simple routine sweeping and annual pressure washing keep them pristine.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003ch1\u003eHammer Stone Grey Porcelain Paving Slabs 600x600x20 MM\u003c\/h1\u003e\n\n\u003cp\u003eBring sleek sophistication and versatile style to your outdoor space with premium \u003cstrong\u003eHammer Stone Grey Porcelain Paving Slabs (600x600x20mm)\u003c\/strong\u003e. Supplied by \u003cstrong\u003ePaving and Slabs Ltd\u003c\/strong\u003e in full project packs covering \u003cstrong\u003e21.6 SQM (60 Slabs Per Pack)\u003c\/strong\u003e, this elegant choice combines a contemporary mid-grey color profile with a finely textured, natural stone-effect finish. The balanced 600x600mm square profile delivers a clean, modern grid layout that creates open, cohesive outdoor living zones across patios, terraces, and garden paths.\u003c\/p\u003e\n\n\u003cp\u003eManufactured using advanced \u003cstrong\u003evitrified porcelain technology\u003c\/strong\u003e, these heavy-duty 20mm calibrated paving flags offer exceptional structural density. The non-porous matrix repels water absorption completely, protecting your patio against winter freeze-thaw cracking, green algae growth, and deep organic staining without requiring periodic sealers or high-maintenance treatment.\u003c\/p\u003e\n\n\u003cdiv style=\"background-color: #fafafa; padding: 20px; border-radius: 8px; margin: 20px 0; border: 1px solid #e3e3e3;\"\u003e\n    \u003ch3 style=\"margin-top: 0; color: #111;\"\u003eHammer Stone Grey Performance Highlights\u003c\/h3\u003e\n    \u003cul style=\"column-count: 2; list-style-position: inside; margin-bottom: 0;\"\u003e\n        \u003cli\u003e\n\u003cstrong\u003eR11 Slip Resistance:\u003c\/strong\u003e High-grip micro-textured surface engineered for safe wet-weather traction.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eContemporary Grey Finish:\u003c\/strong\u003e Versatile mid-grey palette with subtle stone detailing for modern appeal.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eVitrified Core Matrix:\u003c\/strong\u003e Near-zero water absorption eliminates winter freeze-thaw damage.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eZero Post-Sealing:\u003c\/strong\u003e High-density material naturally resists dirt, moss, and outdoor spills.\u003c\/li\u003e\n    \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eRefined Grey Tones Engineered for the UK Climate\u003c\/h2\u003e\n\u003cp\u003eGrey paving remains an enduring favorite in modern landscape architecture due to its uncanny ability to complement both contemporary architectural elements and traditional brickwork. Hammer Stone Grey is 100% UV-stabilized, ensuring its refined slate-like tone won't fade under summer sunshine or dull during rain-heavy UK winters. The textured surface subtly masks everyday garden debris and footprints, making it an ideal choice for high-traffic dining spaces, family gardens, and walkways.\u003c\/p\u003e\n\n\u003cp\u003eReady to finalize your garden project parameters? Explore expert structural tips and seasonal care by visiting our guide on \u003ca href=\"https:\/\/pavingandslabs.co.uk\/blogs\/latest-news\/how-to-clean-and-maintain-paving-slabs-long-lasting-patio-tips\"\u003ehow to clean and maintain paving slabs\u003c\/a\u003e for practical, long-lasting patio maintenance techniques.\u003c\/p\u003e\n\n\u003ch2\u003eCreative Design Pairings \u0026amp; Tonal Contrasts\u003c\/h2\u003e\n\u003cp\u003eThe adaptable, cool tone of Hammer Stone Grey provides an ideal design foundation that coordinates smoothly with a variety of styling options across our catalog:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBold Framing Contrasts:\u003c\/strong\u003e Define borders or seating zones using dark accent flags like our \u003ca href=\"https:\/\/pavingandslabs.co.uk\/products\/anthracite-dark-paving-slabs\"\u003eAnthracite Dark Paving Slabs\u003c\/a\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSoft Natural Transitions:\u003c\/strong\u003e Pair alongside complementary stone-look options such as \u003ca href=\"https:\/\/pavingandslabs.co.uk\/products\/kandla-grey-porcelain-paving-slabs\"\u003eKandla Grey Paving Slabs\u003c\/a\u003e for dynamic multi-tone pathways.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHigh-Contrast Brightness:\u003c\/strong\u003e Create clean, light-reflecting edges or steps alongside crisp \u003ca href=\"https:\/\/pavingandslabs.co.uk\/products\/mountain-white-paving-slabs\"\u003eMountain White Porcelain Slabs\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eBrowse our complete inventory across our main \u003ca href=\"https:\/\/pavingandslabs.co.uk\/collections\/porcelain-paving\"\u003ePorcelain Paving Collection\u003c\/a\u003e, curated \u003ca href=\"https:\/\/pavingandslabs.co.uk\/collections\/patio-slabs\"\u003ePatio Slabs\u003c\/a\u003e, and raw textured \u003ca href=\"https:\/\/pavingandslabs.co.uk\/collections\/indian-sandstone\"\u003eIndian Sandstone\u003c\/a\u003e selections to plan complete landscaping layouts.\u003c\/p\u003e\n\n\u003ch2\u003eProfessional Installation Parameters\u003c\/h2\u003e\n\u003cp\u003eTo guarantee a level, long-lasting installation, Hammer Stone Grey flags must be laid over a compacted MOT Type 1 aggregate base onto a \u003cstrong\u003efull continuous wet mortar bed\u003c\/strong\u003e (typically a 4:1 sharp sand to cement mix). Never spot-bed porcelain paving; omitting full cement contact beneath the flags creates structural voids vulnerable to cracking under load. Because vitrified stoneware cannot absorb liquids from the cement mix, a high-strength SBR porcelain bonding slurry primer must be painted onto the back of every slab immediately before laying to secure a permanent bond.\u003c\/p\u003e\n\n\u003cp\u003eMaintain precise 3 to 5mm joint gaps and set up a consistent drainage fall of 1 in 80 away from building walls to manage surface water effectively. Upkeep remains exceptionally simple—organic matter and surface dirt sit loosely on top of the non-porous face, meaning an occasional sweep and wash with warm soapy water or a light pressure washer keeps the finish looking pristine year after year.\u003c\/p\u003e\n\n\u003cdiv style=\"border-top: 1px solid #ddd; margin-top: 30px; padding-top: 20px;\"\u003e\n    \u003ch3\u003eTechnical Data Matrix \u0026amp; Structural Specs\u003c\/h3\u003e\n    \u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n        \u003ctbody\u003e\n            \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n                \u003ctd style=\"padding: 10px; font-weight: bold; background-color: #fafafa; width: 30%;\"\u003eProduct Format\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px;\"\u003eSquare Format Outdoor Porcelain Paving Slab\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n                \u003ctd style=\"padding: 10px; font-weight: bold; background-color: #fafafa;\"\u003eDimensional Size\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px;\"\u003e600mm x 600mm\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n                \u003ctd style=\"padding: 10px; font-weight: bold; background-color: #fafafa;\"\u003ePack Coverage \u0026amp; Quantity\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px;\"\u003e21.6 SQM Full Project Pack (60 Slabs Per Pack)\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n                \u003ctd style=\"padding: 10px; font-weight: bold; background-color: #fafafa;\"\u003eThickness Calibration\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px;\"\u003e20mm Calibrated Depth (Heavy-Duty Outdoor Grade)\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr style=\"border-bottom: 1px solid #eee;\"\u003e\n                \u003ctd style=\"padding: 10px; font-weight: bold; background-color: #fafafa;\"\u003eSafety Traction Rating\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px;\"\u003eCertified R11 Anti-Slip Textured Grip\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n                \u003ctd style=\"padding: 10px; font-weight: bold; background-color: #fafafa;\"\u003eMaterial Profile\u003c\/td\u003e\n                \u003ctd style=\"padding: 10px;\"\u003eHammer Stone Grey Textured Vitrified Stoneware Matrix\u003c\/td\u003e\n            \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n    \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq-section\"\u003e\n    \u003ch3\u003eAre Hammer Stone Grey porcelain paving slabs suitable for UK weather?\u003c\/h3\u003e\n    \u003cp\u003eYes. Hammer Stone Grey porcelain paving slabs are frost resistant and designed to withstand typical UK weather conditions including heavy rain, severe temperature shifts, and winter frost.\u003c\/p\u003e\n    \n    \u003ch3\u003eAre Hammer Stone Grey porcelain slabs slip-resistant?\u003c\/h3\u003e\n    \u003cp\u003eYes. These slabs feature an R11 slip resistant surface, making them highly suitable for patios, pathways, and outdoor areas where reliable underfoot grip is essential in wet conditions.\u003c\/p\u003e\n\n    \u003ch3\u003eDo porcelain paving slabs require sealing?\u003c\/h3\u003e\n    \u003cp\u003eNo. Porcelain paving slabs are inherently non-porous and do not require ongoing liquid sealing treatments to preserve their structural integrity, color fastness, or stain resistance.\u003c\/p\u003e\n\n    \u003ch3\u003eWhat size are Hammer Stone Grey porcelain paving slabs?\u003c\/h3\u003e\n    \u003cp\u003eThese slabs are supplied in a popular square 600x600mm size with a 20mm calibrated depth engineered specifically for external landscaping use.\u003c\/p\u003e\n\n    \u003ch3\u003eWhere can Hammer Stone Grey porcelain paving be installed?\u003c\/h3\u003e\n    \u003cp\u003eHammer Stone Grey porcelain paving is suitable for residential patios, garden pathways, terraces, steps, and commercial outdoor spaces requiring a premium, durable, and low-maintenance flooring surface.\u003c\/p\u003e\n\n    \u003ch3\u003eAre porcelain paving slabs easy to clean?\u003c\/h3\u003e\n    \u003cp\u003eYes. Because vitrified porcelain is non-porous, organic matter, mud, and leaves sit loosely on top rather than embedding into the tile. Simple routine sweeping and an annual pressure wash with clean water keep them pristine.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Paving and Slabs","offers":[{"title":"Default Title","offer_id":48690682757374,"sku":null,"price":549.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/3647\/5134\/files\/hs-grey-patio-slabs.jpg?v=1785943559","url":"https:\/\/pavingandslabs.co.uk\/products\/hammer-stone-grey-porcelain-paving-slabs-600-600","provider":"Paving and Slabs","version":"1.0","type":"link"}