{"product_id":"6mm-hdf-overlay-board-for-routed-osb-chipboard","title":"6mm HDF Overlay Board for Routed OSB \u0026 Chipboard","description":"\u003c!-- SEO Product Name: Tekwarm 6mm HDF Overlay Board for Routed OSB \u0026 Chipboard | PR011970 --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#222222; line-height:1.6;\"\u003e\n\u003cp style=\"margin:0 0 12px 0;\"\u003eThe \u003cstrong\u003eTekwarm 6mm HDF Overlay Board\u003c\/strong\u003e is a \u003cstrong\u003emoisture resistant high-density fibreboard cover sheet\u003c\/strong\u003e for \u003cstrong\u003eTekwarm routed OSB and chipboard underfloor heating panels\u003c\/strong\u003e. Laid over the panels once the pipe is in place, it \u003cstrong\u003ecloses the channels, protects the pipework\u003c\/strong\u003e and gives a \u003cstrong\u003esmooth, durable, stable surface\u003c\/strong\u003e for the final floor finish.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px 0;\"\u003eEach \u003cstrong\u003e1200 x 600 x 6mm\u003c\/strong\u003e board covers \u003cstrong\u003e0.72 m²\u003c\/strong\u003e and is \u003cstrong\u003eprinted with the 150mm pipe centre layout\u003c\/strong\u003e and \u003cstrong\u003e34 pre-marked screw points\u003c\/strong\u003e, so pipe positions are easy to see and fixings stay clear of the heating pipe. The slim \u003cstrong\u003e6mm profile\u003c\/strong\u003e keeps floor build-up to a minimum.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:18px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e6mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eBoard thickness\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e1200 x 600mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eBoard size\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e0.72 m²\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eCoverage per board\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eHDF\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eMoisture resistant\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e34\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003ePrinted screw points\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:14px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e150mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003ePrinted pipe layout\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:5px solid #B3261E; background:#FDECEA; border-radius:6px; padding:12px 16px; margin:12px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#B3261E; margin-bottom:4px;\"\u003eDo not pierce the heating pipe\u003c\/div\u003e\n\u003cdiv style=\"color:#222222;\"\u003eFix the board only at the \u003cstrong\u003eprinted screw locations\u003c\/strong\u003e (34 per board), pre-drilling near the channels and positioning every screw \u003cstrong\u003eso it cannot touch the pipe below\u003c\/strong\u003e. Always keep saw blade paths clear of the pipework when cutting.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:5px solid #B26A00; background:#FFF4E0; border-radius:6px; padding:12px 16px; margin:12px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#B26A00; margin-bottom:4px;\"\u003eFor Tekwarm routed panels only; not a structural layer\u003c\/div\u003e\n\u003cdiv style=\"color:#222222;\"\u003eUse over \u003cstrong\u003eTekwarm routed OSB and chipboard panels\u003c\/strong\u003e with the pipe already installed. It is \u003cstrong\u003enot for solid screeds, loose-laid pipe or non-routed panels\u003c\/strong\u003e. At 6mm it is \u003cstrong\u003enot a structural layer\u003c\/strong\u003e: the routed panel beneath carries the load, so confirm the overlay needed for your joist spacing in your design layout.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:5px solid #B26A00; background:#FFF4E0; border-radius:6px; padding:12px 16px; margin:12px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#B26A00; margin-bottom:4px;\"\u003eCheck your floor finish\u003c\/div\u003e\n\u003cdiv style=\"color:#222222;\"\u003eListed for \u003cstrong\u003elaminate, engineered wood, vinyl and carpet\u003c\/strong\u003e, following the floor covering manufacturer's guidance for use over underfloor heating. \u003cstrong\u003eTiling is not listed\u003c\/strong\u003e for this board, so contact us before specifying tiles.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color:#008377CF; font-size:20px; margin:24px 0 10px 0; border-bottom:2px solid #008377CF; padding-bottom:6px;\"\u003eKey features\u003c\/h3\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:12px;\"\u003e\n\u003cdiv style=\"flex:1 1 250px; border:1px solid #008377CF; border-top:4px solid #008377CF; border-radius:8px; padding:14px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003ePrinted 150mm pipe layout\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003eThe \u003cstrong\u003e150mm pipe centre layout is printed\u003c\/strong\u003e on the board so installers can see where the pipe runs and avoid damage.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; border:1px solid #008377CF; border-top:4px solid #008377CF; border-radius:8px; padding:14px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003e34 pre-marked screw points\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003e\n\u003cstrong\u003eFixing locations are printed\u003c\/strong\u003e on each board, with \u003cstrong\u003e34 x 20mm chipboard screws\u003c\/strong\u003e recommended per board.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; border:1px solid #008377CF; border-top:4px solid #008377CF; border-radius:8px; padding:14px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eMoisture resistant HDF\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003e\n\u003cstrong\u003eHigh-density fibreboard\u003c\/strong\u003e that is \u003cstrong\u003emoisture resistant\u003c\/strong\u003e gives a smooth, durable surface under floor finishes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; border:1px solid #008377CF; border-top:4px solid #008377CF; border-radius:8px; padding:14px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eSlim 6mm profile\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003e\n\u003cstrong\u003e6mm\u003c\/strong\u003e keeps added height low, ideal for \u003cstrong\u003erefurbishment and restricted floor levels\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; border:1px solid #008377CF; border-top:4px solid #008377CF; border-radius:8px; padding:14px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003e12mm and 16mm systems\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003eSuitable for \u003cstrong\u003e12mm and 16mm\u003c\/strong\u003e underfloor heating systems on Tekwarm routed panels.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 250px; border:1px solid #008377CF; border-top:4px solid #008377CF; border-radius:8px; padding:14px; background:#ffffff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eEasy to cut and fit\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003eCuts with \u003cstrong\u003estandard woodworking tools\u003c\/strong\u003e to suit room layouts and edges.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color:#008377CF; font-size:20px; margin:24px 0 10px 0; border-bottom:2px solid #008377CF; padding-bottom:6px;\"\u003eTechnical specification\u003c\/h3\u003e\n\u003cdiv style=\"margin-top:14px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 14px;\"\u003eProduct details\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eTekwarm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eRange\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eHDF Overlay Board\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eManufacturer part number\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003ePR011970\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eCore material\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eHigh-density fibreboard (HDF)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eMoisture rating\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eMoisture resistant\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:14px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 14px;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eLength\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e1200mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eWidth\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e600mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eThickness\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e6mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eCoverage per board\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e0.72 m²\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:14px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 14px;\"\u003eLayout and fixings\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003ePrinted layout\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e150mm pipe centres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eFixings per board\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e34 x 20mm chipboard screws at printed locations\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eFixing notes\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003ePre-drill near channels, ensure flatness for finish, adhesive where applicable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:14px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 14px;\"\u003eCompatibility and finishes\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eCompatible panels\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eTekwarm routed OSB and routed chipboard UFH panels, standard or foiled\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003ePipe systems\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e12mm and 16mm underfloor heating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#0083770A; padding:9px 14px; border-top:1px solid #00837722;\"\u003e\n\u003cdiv style=\"flex:1 1 200px; font-weight:700; color:#008377CF;\"\u003eSuitable finishes\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eLaminate, engineered wood, vinyl and carpet\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color:#008377CF; font-size:20px; margin:24px 0 10px 0; border-bottom:2px solid #008377CF; padding-bottom:6px;\"\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:8px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 14px; cursor:pointer;\"\u003eWhich panels is this overlay for?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eIt is designed for \u003cstrong\u003eTekwarm routed OSB and routed chipboard panels\u003c\/strong\u003e, standard or foiled, once the heating pipe is installed. It is not for solid screeds, loose-laid pipe or non-routed systems.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:8px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 14px; cursor:pointer;\"\u003eWhat does the overlay do?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eIt \u003cstrong\u003ecloses the pipe channels, protects the pipework\u003c\/strong\u003e and creates a \u003cstrong\u003esmooth, continuous surface\u003c\/strong\u003e ready for the final floor finish.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:8px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 14px; cursor:pointer;\"\u003eDoes it add structural strength?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eNo. At 6mm it is \u003cstrong\u003enot a structural layer\u003c\/strong\u003e. The routed OSB or chipboard panels beneath provide the load-bearing support.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:8px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 14px; cursor:pointer;\"\u003eHow is it fixed?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eUse \u003cstrong\u003e34 chipboard screws of 20mm\u003c\/strong\u003e per board at the \u003cstrong\u003eprinted screw locations\u003c\/strong\u003e, pre-drilled near the channels and kept clear of the pipe.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:8px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 14px; cursor:pointer;\"\u003eWhat floor finishes can go on top?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eIt is typically used beneath \u003cstrong\u003elaminate, engineered wood, vinyl and carpet\u003c\/strong\u003e. Follow the floor covering manufacturer's guidance for use over UFH, and contact us before using tiles.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:8px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 14px; cursor:pointer;\"\u003eCan I cut it on site?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eYes, with \u003cstrong\u003estandard woodworking tools\u003c\/strong\u003e. Position fixings carefully and keep blade paths clear of the pipe below.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Tekwarm","offers":[{"title":"Default Title","offer_id":68386550710662,"sku":"PR011970","price":13.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/OverlayforRoutedOSB_Chipboard1200mmx600mm.jpg?v=1794123900","url":"https:\/\/qualityheating.co.uk\/products\/6mm-hdf-overlay-board-for-routed-osb-chipboard","provider":"AIZO Quality Heating","version":"1.0","type":"link"}