{"product_id":"brazilian-natural-roofing-slate-500x250mm","title":"Brazilian Natural Roofing Slate – 500 x 250mm, Pre-Holed \u0026amp; Pyrite-Free","description":"\u003cp\u003eNatural slate is still the benchmark pitched roofing material for a reason — nothing else weathers to the same soft grey-green patina or lasts as long without cracking, fading or shedding granules the way felt and composite shingles eventually do. This is genuine Brazilian natural slate from Minas Gerais, Westland grade, in the standard 500 x 250mm format used across most UK re-roofing and new-build pitched work. Every slate is pre-holed and graded pyrite-free, so you're not sorting a pallet on site before you can start fixing.\u003c\/p\u003e\n\n\u003cp\u003eBuy a single slate to check the colour and grain against your existing roof, an m² bundle for a repair or small extension, or a full pallet for a complete re-roof — all priced from the same real per-slate cost, so there's no markup penalty for buying small.\u003c\/p\u003e\n\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine natural slate, Westland 1st Grade, sourced from Minas Gerais, Brazil\u003c\/li\u003e\n\u003cli\u003ePre-holed for standard nail fixing — no on-site drilling\u003c\/li\u003e\n\u003cli\u003ePyrite-free, W-1\/T-1\/S-1 rated for weathering, strength and water absorption\u003c\/li\u003e\n\u003cli\u003e500 x 250mm (20\" x 10\"), the most widely specified UK roofing slate size\u003c\/li\u003e\n\u003cli\u003e30-year supplier guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e500 x 250mm (20\" x 10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNominal thickness\u003c\/th\u003e\n\u003ctd\u003e5–7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eMinas Gerais, Brazil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGrade\u003c\/th\u003e\n\u003ctd\u003eWestland 1st Grade, pyrite-free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRating\u003c\/th\u003e\n\u003ctd\u003eW-1 \/ T-1 \/ S-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoverage\u003c\/th\u003e\n\u003ctd\u003eApprox. 19.1 slates per m² at 90mm headlap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePallet quantity\u003c\/th\u003e\n\u003ctd\u003eApprox. 650 slates per pallet (approx. 34m² coverage)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFixing\u003c\/th\u003e\n\u003ctd\u003ePre-holed for standard slate nails (nails and battens sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGuarantee\u003c\/th\u003e\n\u003ctd\u003e30 years (supplier-stated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eHow much do I need?\u003c\/h3\u003e\n\u003cp\u003eCoverage is approximately 19.1 slates per m² at a 90mm headlap — always confirm your own headlap and gauge with a roofer before ordering, as exposure varies with roof pitch and local wind\/weather exposure. Our m² and 5m²\/10m² bundles are calculated directly from that per-slate coverage rate, and a full pallet holds approximately 650 slates (around 34m² of coverage). Always order slightly more than your calculated area to allow for cutting, hips, valleys and breakages. If you're re-roofing alongside flat-roofed sections such as a dormer or bay, our \u003ca href=\"https:\/\/rubberroofuk.uk\/collections\/epdm-membranes\"\u003eEPDM membrane range\u003c\/a\u003e and \u003ca href=\"https:\/\/rubberroofuk.uk\/products\/breathable-roofing-membrane-125gsm-roof-wall-underlay-50m-rolls-taped-kits\"\u003ebreathable roofing underlay\u003c\/a\u003e cover those areas.\u003c\/p\u003e\n\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this real slate or a composite?\u003c\/strong\u003e\u003cbr\u003eGenuine natural slate, quarried in Minas Gerais, Brazil — not a synthetic or composite tile.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does \"pyrite-free\" mean and why does it matter?\u003c\/strong\u003e\u003cbr\u003ePyrite inclusions in poor-quality slate can rust and stain or crack the slate over time. This grade is checked and graded pyrite-free.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to drill the slates myself?\u003c\/strong\u003e\u003cbr\u003eNo — every slate is supplied pre-holed for standard nail fixing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat headlap should I use?\u003c\/strong\u003e\u003cbr\u003eHeadlap depends on your roof pitch and local exposure — as a general guide 90mm is common on standard pitches, but always check current guidance (e.g. BS 5534) or ask your roofer for your specific project.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I mix this with my existing roof slates?\u003c\/strong\u003e\u003cbr\u003eNatural slate varies by quarry in colour, grain and thickness — order a single sample first and compare it in daylight against your existing roof before committing to a full pallet.\u003c\/p\u003e","brand":"Rubber Roof UK","offers":[{"title":"Single Slate (Sample)","offer_id":46003619102911,"sku":"RRUK-SLATE-BRZ-1","price":2.2,"currency_code":"GBP","in_stock":true},{"title":"5m² Bundle (approx. 95 slates)","offer_id":46003619135679,"sku":"RRUK-SLATE-BRZ-5M2","price":209.0,"currency_code":"GBP","in_stock":true},{"title":"10m² Bundle (approx. 190 slates)","offer_id":46003619168447,"sku":"RRUK-SLATE-BRZ-10M2","price":418.0,"currency_code":"GBP","in_stock":true},{"title":"Full Pallet (approx. 650 slates, approx. 34m²)","offer_id":46003619201215,"sku":"RRUK-SLATE-BRZ-PALLET","price":1430.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0598\/1804\/9727\/files\/brazilian-natural-slate-roof-grey-green-pitched.jpg?v=1786523195","url":"https:\/\/rubberroofuk.uk\/products\/brazilian-natural-roofing-slate-500x250mm","provider":"Rubber Roof UK","version":"1.0","type":"link"}