{"product_id":"k-flex-k-rock-alu-20mm","title":"K-Flex K-Rock ALU Mineral Wool Pipe Insulation 20mm Wall","description":"\u003ch2\u003eK-Flex K-Rock ALU Mineral Wool Pipe Insulation — 20mm Wall\u003c\/h2\u003e\u003cp\u003eK-FLEX K-Rock ALU is a pre-formed mineral wool (rock wool) pipe section with an aluminium foil facing, manufactured to the highest European standards. Engineered for high-temperature HVAC, industrial, and building services pipework where elastomeric insulation is unsuitable, K-Rock ALU delivers outstanding thermal performance, fire resistance, and mechanical durability in demanding environments.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003e20mm wall thickness\u003c\/strong\u003e is the entry-level specification in the K-Rock ALU range, suited to smaller-bore pipework in commercial HVAC, hot water, and building services installations where non-combustible insulation is required. Available in bore sizes from 15mm to 114mm.\u003c\/p\u003e\u003cp\u003eThe factory-applied aluminium foil laminate provides a clean, professional finish and acts as a vapour barrier, making K-Rock ALU the preferred specification for plant rooms, district heating, steam lines, and high-temperature process pipework. Seal all joints and longitudinal seams with aluminium foil tape for a complete vapour-tight installation.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRock mineral wool construction — excellent high-temperature performance\u003c\/li\u003e\n\u003cli\u003eAluminium foil (ALU) facing — vapour barrier, professional finish, and UV resistance\u003c\/li\u003e\n\u003cli\u003eOutstanding fire resistance — Euroclass A1 non-combustible\u003c\/li\u003e\n\u003cli\u003eExcellent acoustic and thermal insulation properties\u003c\/li\u003e\n\u003cli\u003eRigid pre-formed sections for fast, accurate installation\u003c\/li\u003e\n\u003cli\u003e20mm wall — 15mm to 114mm bore sizes available\u003c\/li\u003e\n\u003cli\u003eSupplied per 1 metre section\u003c\/li\u003e\n\u003cli\u003eCE certified — compliant with EN 14303\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHigh-temperature HVAC pipework and plant rooms\u003c\/li\u003e\n\u003cli\u003eDistrict heating and steam distribution\u003c\/li\u003e\n\u003cli\u003eHot water and process pipework\u003c\/li\u003e\n\u003cli\u003eIndustrial installations requiring fire-rated insulation\u003c\/li\u003e\n\u003cli\u003eBuilding services where non-combustible insulation is specified\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRock mineral wool\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFacing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminium foil laminate (ALU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWall thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore sizes available\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15mm to 114mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-200°C to +650°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal conductivity (λ)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.033 W\/(m·K) at 10°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReaction to fire\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEuroclass A1 — non-combustible (EN 13501-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWater vapour diffusion resistance (μ)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥ 7,000 (ALU facing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEN 14303\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSection length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 metre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColour\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSilver (ALU faced)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eK-FLEX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eOther wall thicknesses:\u003c\/strong\u003e \u003ca href=\"\/products\/k-flex-k-rock-alu-25mm\"\u003e25mm\u003c\/a\u003e | \u003ca href=\"\/products\/k-flex-k-rock-alu-30mm\"\u003e30mm\u003c\/a\u003e | \u003ca href=\"\/products\/k-flex-k-rock-alu-40mm\"\u003e40mm\u003c\/a\u003e | \u003ca href=\"\/products\/k-flex-k-rock-alu-50mm\"\u003e50mm\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e⚠️ Additional wall thicknesses available on request:\u003c\/strong\u003e 60mm, 70mm, 80mm, 90mm, 100mm and 120mm. Please contact us at \u003ca href=\"mailto:sales@ryanairconspares.com\"\u003esales@ryanairconspares.com\u003c\/a\u003e for pricing and availability.\u003c\/p\u003e","brand":"K-Flex","offers":[{"title":"15mm","offer_id":57273678856569,"sku":"20015LR1080BARP","price":5.39,"currency_code":"GBP","in_stock":true},{"title":"18mm","offer_id":57273678889337,"sku":"20018LR1080BARP","price":5.09,"currency_code":"GBP","in_stock":true},{"title":"22mm","offer_id":57273678922105,"sku":"20022LR1080BARP","price":5.3,"currency_code":"GBP","in_stock":true},{"title":"28mm","offer_id":57273678954873,"sku":"20028LR1080BARP","price":5.67,"currency_code":"GBP","in_stock":true},{"title":"34mm","offer_id":57273678987641,"sku":"20034LR1080BARP","price":6.14,"currency_code":"GBP","in_stock":true},{"title":"42mm","offer_id":57273679020409,"sku":"20042LR1080BARP","price":6.88,"currency_code":"GBP","in_stock":true},{"title":"48mm","offer_id":57273679053177,"sku":"20048LR1080BARP","price":7.25,"currency_code":"GBP","in_stock":true},{"title":"54mm","offer_id":57273679085945,"sku":"20054LR1080BARP","price":7.82,"currency_code":"GBP","in_stock":true},{"title":"60mm","offer_id":57273679118713,"sku":"20060LR1080BARP","price":8.3,"currency_code":"GBP","in_stock":true},{"title":"64mm","offer_id":57273679151481,"sku":"20064LR1080BARP","price":9.98,"currency_code":"GBP","in_stock":true},{"title":"70mm","offer_id":57273679184249,"sku":"20070LR1080BARP","price":10.61,"currency_code":"GBP","in_stock":true},{"title":"76mm","offer_id":57273679217017,"sku":"20076LR1080BARP","price":12.47,"currency_code":"GBP","in_stock":true},{"title":"89mm","offer_id":57273679249785,"sku":"20089LR1080BARP","price":14.18,"currency_code":"GBP","in_stock":true},{"title":"102mm","offer_id":57273679282553,"sku":"20102LR1080BARP","price":17.88,"currency_code":"GBP","in_stock":true},{"title":"108mm","offer_id":57273679315321,"sku":"20108LR1080BARP","price":18.8,"currency_code":"GBP","in_stock":true},{"title":"114mm","offer_id":57273679348089,"sku":"20114LR1080BARP","price":20.88,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/K-FLEX-K-Rock-ALU-Mineral-Wool-Pipe-Insulation-Ryan-Air-Conditioning-Spares-68791865377143_b3b67377-e713-4c83-b3b3-6e601b88e415.png?v=1778762499","url":"https:\/\/www.airconspares.com\/products\/k-flex-k-rock-alu-20mm","provider":"Airconspares.com","version":"1.0","type":"link"}