{"product_id":"polypipe-ufh-ultra-flexible-barrier-pipe-coil-12mm-overlay-ufh-system-pipe-50m-80m","title":"Polypipe UFH Ultra Flexible Barrier Pipe Coil 12mm | Overlay UFH System Pipe | 50m \u0026 80m","description":"\u003cstyle\u003e\n  .pp-desc * { box-sizing: border-box; }\n  .pp-desc { font-family: inherit; color: inherit; line-height: 1.7; font-size: 16px; }\n  .pp-desc p, .pp-desc li, .pp-desc td, .pp-desc th { font-size: 16px !important; line-height: 1.7; }\n  .pp-desc h2 { font-size: 22px !important; font-weight: 700; color: #1a2a1a; border-bottom: 2px solid #e05c00; padding-bottom: 6px; margin: 2rem 0 1rem; line-height: 1.3; }\n  .pp-desc h3 { font-size: 17px !important; font-weight: 700; color: #1a2a1a; margin: 1.2rem 0 0.4rem; line-height: 1.4; }\n  .pp-desc p { margin: 0 0 1rem; }\n  .pp-desc ul { padding-left: 1.5rem; margin: 0 0 1rem; }\n  .pp-desc ul li { margin-bottom: 0.5rem; }\n  .pp-intro-box { background: #f9f4f0; border-left: 4px solid #e05c00; padding: 1.1rem 1.4rem; border-radius: 0 6px 6px 0; margin-bottom: 1.5rem; }\n  .pp-intro-box p { margin: 0 !important; }\n  .pp-badge { display: inline-block; background: #e05c00; color: #fff; font-size: 13px !important; font-weight: 700; border-radius: 4px; padding: 2px 10px; margin-right: 6px; margin-bottom: 4px; vertical-align: middle; letter-spacing: 0.04em; }\n  .pp-badge.grey { background: #555; }\n  .pp-badge.dark { background: #1a2a1a; }\n  .pp-variant-table { width: 100%; border-collapse: collapse; margin-bottom: 1.2rem; }\n  .pp-variant-table th { background: #e05c00; color: #fff !important; text-align: left; padding: 0.7rem 1rem; font-weight: 600; font-size: 16px !important; }\n  .pp-variant-table td { padding: 0.6rem 1rem; border-bottom: 1px solid #e0e0e0; vertical-align: top; font-size: 16px !important; }\n  .pp-variant-table tr:nth-child(even) td { background: #f9f4f0; }\n  .pp-variant-table td:first-child { font-weight: 600; color: #111; }\n  .pp-spec-table { width: 100%; border-collapse: collapse; margin-bottom: 1.2rem; }\n  .pp-spec-table th { background: #1a2a1a; color: #fff !important; text-align: left; padding: 0.7rem 1rem; font-weight: 600; font-size: 16px !important; }\n  .pp-spec-table td { padding: 0.6rem 1rem; border-bottom: 1px solid #e0e0e0; vertical-align: top; font-size: 16px !important; }\n  .pp-spec-table tr:nth-child(even) td { background: #f5f5f5; }\n  .pp-spec-table td:first-child { font-weight: 600; color: #111; width: 42%; }\n  .pp-callout { background: #f9f4f0; border-left: 4px solid #e05c00; border-radius: 0 6px 6px 0; padding: 1rem 1.3rem; margin: 1.2rem 0; }\n  .pp-callout p { margin: 0 !important; }\n  .pp-callout h3 { margin-top: 0 !important; color: #1a2a1a; }\n  .pp-infobox { background: #fff8e6; border: 1px solid #f0d080; border-radius: 6px; padding: 1rem 1.2rem; margin-top: 1.5rem; color: #5a4a00; line-height: 1.6; font-size: 16px !important; }\n  .pp-faq-item { border-bottom: 1px solid #e0e0e0; padding: 1rem 0; }\n  .pp-faq-item:last-child { border-bottom: none; }\n  .pp-faq-item p { margin: 0.4rem 0 0 !important; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"pp-desc\"\u003e\n\n  \u003cdiv class=\"pp-intro-box\"\u003e\n    \u003cp\u003e\n      \u003cspan class=\"pp-badge\"\u003e12mm Barrier Pipe\u003c\/span\u003e\n      \u003cspan class=\"pp-badge grey\"\u003eOverlay \u0026amp; Overlay Lite Systems\u003c\/span\u003e\n      \u003cspan class=\"pp-badge dark\"\u003eUFH Only — Not for Plumbing\u003c\/span\u003e\n    \u003c\/p\u003e\n    \u003cp style=\"margin-top:0.75rem !important;\"\u003eThe \u003cstrong\u003ePolypipe UFH 12mm Ultra Flexible Barrier Pipe Coil\u003c\/strong\u003e is the correct pipe for all Polypipe Overlay™ and Overlay™ Lite underfloor heating systems — the low-profile, over-the-floor UFH range designed for installation over existing solid or timber floors without excavation. At 12mm diameter, this ultra-flexible polybutylene barrier pipe fits directly into the grooves of the Overlay floor panels and the channels of the Overlay end returns (PB08573), producing a total installed system depth of just 18mm. Available in 50m (UFH5012B) and 80m (UFH8012B) coil lengths to match the circuit size requirement. \u003cstrong\u003eUFH pipe only — not suitable for plumbing, gas, or potable water.\u003c\/strong\u003e\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eAvailable Variants — Select Length Above\u003c\/h2\u003e\n  \u003ctable class=\"pp-variant-table\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n\u003cth\u003eCoil Length\u003c\/th\u003e\n\u003cth\u003eMPN\u003c\/th\u003e\n\u003cth\u003eTypical Coverage @ 150mm centres\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e50m\u003c\/td\u003e\n        \u003ctd\u003eUFH5012B\u003c\/td\u003e\n        \u003ctd\u003eUp to 15m² per circuit (including tails)\u003c\/td\u003e\n        \u003ctd\u003eSingle rooms — bathrooms, kitchens, conservatories up to ~15m²\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e80m\u003c\/td\u003e\n        \u003ctd\u003eUFH8012B\u003c\/td\u003e\n        \u003ctd\u003eUp to 25m² per circuit (including tails)\u003c\/td\u003e\n        \u003ctd\u003eLarger single rooms or two smaller circuits — most versatile Overlay coil size\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cp style=\"color:#555; font-size:15px !important;\"\u003eThe Overlay system is designed for room-by-room circuits with a maximum circuit length of 80m (inclusive of connection tails). Each circuit should not exceed 80m; for larger areas, split into multiple circuits on the manifold. Polypipe Overlay panels are designed for circuits up to 15m² per panel run — larger rooms may require multiple circuits and multiple rows of panels with their own end returns.\u003c\/p\u003e\n\n  \u003ch2\u003eThe Overlay System — Over-the-Floor UFH\u003c\/h2\u003e\n  \u003cp\u003eThe Polypipe Overlay™ system is designed specifically for retrofit and renovation projects where traditional solid-floor underfloor heating is impractical — no excavation is required, and the entire system installs over the existing floor surface. The 12mm pipe clips into pre-formed grooves in the lightweight Overlay floor panels, which are bonded to each other using PB776 polyurethane expanding foam glue and connected at circuit ends using PB08573 Overlay end returns. The total finished system height — from existing floor surface to the top of the screed or board layer above — is just 18mm, making it compatible with most internal door clearances without modification. Because the 12mm pipe is smaller diameter than the 15mm solid floor pipe, the manifold connection requires PB181512 adaptor sets (15mm to 12mm).\u003c\/p\u003e\n\n  \u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUltra flexible polybutylene\u003c\/strong\u003e — significantly easier to route through the panel grooves than standard plumbing barrier pipe; reduces installation effort and time\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegral oxygen barrier\u003c\/strong\u003e — prevents oxygen ingress and corrosion of boiler and system components\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e12mm diameter — system-specific\u003c\/strong\u003e — sized for the Overlay™ and Overlay™ Lite panel groove geometry; the Overlay system is designed around 12mm pipe throughout\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e18mm total system depth\u003c\/strong\u003e — with panel installed, the 12mm pipe sits within the panel groove at a total height of 18mm above the existing floor; lowest-profile water UFH system available\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTested to BS EN ISO 15876 \/ 21003\u003c\/strong\u003e — maximum 10 bar working pressure, 60°C maximum operating temperature\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFreeze resistant\u003c\/strong\u003e — temporary deformation rather than splitting in frost conditions provides on-site protection before the system is filled and commissioned\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003ctable class=\"pp-spec-table\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePipe diameter\u003c\/td\u003e\n\u003ctd\u003e12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eUltra flexible polybutylene\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOxygen barrier\u003c\/td\u003e\n\u003ctd\u003eYes — integral\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMaximum operating temperature\u003c\/td\u003e\n\u003ctd\u003e60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMaximum working pressure\u003c\/td\u003e\n\u003ctd\u003e10 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eStandards\u003c\/td\u003e\n\u003ctd\u003eBS EN ISO 15876-1:2003 \/ BS EN ISO 21003-1:2008\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSystem compatibility\u003c\/td\u003e\n\u003ctd\u003ePolypipe Overlay™ and Overlay™ Lite floor panels only\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTotal installed system height\u003c\/td\u003e\n\u003ctd\u003e18mm (panel + pipe + screed\/board above)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eManifold connection\u003c\/td\u003e\n\u003ctd\u003eRequires PB181512 adaptor set (15mm manifold to 12mm pipe)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eNot suitable for\u003c\/td\u003e\n\u003ctd\u003eSolid floor panel\/clip rail systems, plumbing, gas, potable water\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAvailable lengths\u003c\/td\u003e\n\u003ctd\u003e50m (UFH5012B), 80m (UFH8012B)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003cdiv class=\"pp-callout\"\u003e\n    \u003ch3\u003e⚠️ Manifold Adaptor Required\u003c\/h3\u003e\n    \u003cp\u003ePolypipe stainless steel and plastic manifolds have 15mm push-fit connections as standard. To connect 12mm Overlay pipe to a 15mm manifold, you must use \u003cstrong\u003ePB181512 Adaptor Sets (15mm to 12mm, pack of 2)\u003c\/strong\u003e — one adaptor per circuit (flow and return). Order one pack of PB181512 per two circuits. Without these adaptors, the 12mm pipe cannot be connected to the manifold.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"pp-infobox\"\u003e\n    \u003cstrong\u003eℹ️ Related Overlay system products:\u003c\/strong\u003e PB08570 \/ PB08571 Overlay Floor Panels · PB08573 Overlay End Returns (Pack of 10) · PB776 Polyurethane Expanding Foam Glue (panel adhesive) · PB181512 Adaptor Set 15mm to 12mm · UFHSPP1 Stainless Steel Manifold Control Pack · UFH165 Isolation Valves 1\" Pair\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Polypipe","offers":[{"title":"50m","offer_id":63633608966493,"sku":"UFH5012B","price":95.0,"currency_code":"GBP","in_stock":true},{"title":"80m","offer_id":63633608999261,"sku":"UFH8012B","price":145.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/PolypipeUFHUltraFlexibleBarrierPipeCoil15mmUnderfloorHeatingPipe50m_150m.jpg?v=1772127505","url":"https:\/\/qualityheating.co.uk\/products\/polypipe-ufh-ultra-flexible-barrier-pipe-coil-12mm-overlay-ufh-system-pipe-50m-80m","provider":"AIZO Quality Heating","version":"1.0","type":"link"}