{"product_id":"black-dpm-roll-4m-wide-300mu-25m-or-500mu-12-5m-polyethylene","title":"Black DPM Roll 4m Wide | 300mu 25m or 500mu 12.5m Polyethylene","description":"\u003c!-- SEO Product Name: Black DPM Roll 4m Wide | 300mu 25m or 500mu 12.5m Polyethylene --\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;\"\u003eThis \u003cstrong\u003eblack polyethylene damp proof membrane (DPM)\u003c\/strong\u003e gives a \u003cstrong\u003econtinuous moisture barrier\u003c\/strong\u003e under floors and screeds, protecting \u003cstrong\u003econcrete floors, screeded floors and underfloor heating installations\u003c\/strong\u003e from \u003cstrong\u003erising damp and condensation\u003c\/strong\u003e. It is \u003cstrong\u003eresistant to punctures, tears and chemical degradation\u003c\/strong\u003e and suits both \u003cstrong\u003edomestic and commercial\u003c\/strong\u003e projects.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px 0;\"\u003eSupplied in \u003cstrong\u003e4m wide rolls\u003c\/strong\u003e in two grades: \u003cstrong\u003e1200 gauge (300 micron) in a 25m roll covering 100 m²\u003c\/strong\u003e, and \u003cstrong\u003e2000 gauge (500 micron) in a 12.5m roll covering 50 m²\u003c\/strong\u003e. Choose your grade and roll from the variant table below.\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;\"\u003e4m\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eRoll width\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;\"\u003e300 or 500mu\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eThickness grades\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 or 2000g\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eGauge\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;\"\u003e100 m²\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003e300mu, 25m roll\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;\"\u003e50 m²\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003e500mu, 12.5m roll\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;\"\u003eBlack\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003ePolyethylene\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;\"\u003eLay the membrane on a sound, smooth base and protect it from damage\u003c\/div\u003e\n\u003cdiv style=\"color:#222222;\"\u003eLay the DPM over a \u003cstrong\u003eclean, smooth, sound base\u003c\/strong\u003e free of sharp edges and debris, and protect it from damage during installation. A punctured membrane will not stop moisture. Insulation or screed goes on top, so \u003cstrong\u003erepair any tears before covering\u003c\/strong\u003e.\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;\"\u003eMatch the grade to the job\u003c\/div\u003e\n\u003cdiv style=\"color:#222222;\"\u003eThe \u003cstrong\u003e500 micron (2000 gauge)\u003c\/strong\u003e grade is the heavier duty option; the \u003cstrong\u003e300 micron (1200 gauge)\u003c\/strong\u003e grade is lighter. Check the specification for your build-up, such as the minimum membrane gauge your insulation or UFH screed system requires, before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:5px solid #008377CF; background:#00837714; border-radius:6px; padding:12px 16px; margin:12px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:4px;\"\u003eCommon underfloor heating use\u003c\/div\u003e\n\u003cdiv style=\"color:#222222;\"\u003eTekwarm UFH boards are installed \u003cstrong\u003eover a solid ground floor on a suitable DPM\u003c\/strong\u003e, and some floor insulation boards call for a \u003cstrong\u003e500 gauge protective membrane\u003c\/strong\u003e under screed. Both grades here exceed 500 gauge. Always follow your insulation and screed manufacturer's guidance.\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;\"\u003eRising damp and condensation barrier\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003eAn \u003cstrong\u003eimpermeable polyethylene barrier\u003c\/strong\u003e that stops dampness seeping into floors and foundations.\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;\"\u003eTough and tear resistant\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003e\n\u003cstrong\u003eResistant to punctures, tears and chemical degradation\u003c\/strong\u003e for dependable performance on site.\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;\"\u003eTwo thickness grades\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003e\n\u003cstrong\u003e1200 gauge (300 micron)\u003c\/strong\u003e and \u003cstrong\u003e2000 gauge (500 micron)\u003c\/strong\u003e to suit your specification.\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;\"\u003eWide 4m rolls\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003e\n\u003cstrong\u003e4m wide rolls\u003c\/strong\u003e cover large floor areas quickly with fewer joints.\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;\"\u003eDomestic and commercial\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003eSuited to \u003cstrong\u003enew build, renovation and commercial\u003c\/strong\u003e projects, including areas prone to high moisture.\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;\"\u003eRoll format\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#333333;\"\u003eRolls are easy to handle and lay over \u003cstrong\u003econcrete floors, basements and crawl spaces\u003c\/strong\u003e.\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;\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003ePolyethylene\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;\"\u003eColour\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eBlack\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;\"\u003eRoll width\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e4m\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;\"\u003eUse\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eDamp proof membrane for floors, under insulation and screed\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;\"\u003eGrades\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;\"\u003e1200 gauge\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e300 micron, 25m roll, 100 m²\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;\"\u003e2000 gauge\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e500 micron, 12.5m roll, 50 m²\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;\"\u003eGauge conversion\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e1 gauge equals 0.25 micron\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;\"\u003ePerformance\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;\"\u003eBarrier\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eImpermeable to damp and condensation\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;\"\u003eStrength\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eResistant to punctures and tears\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;\"\u003eChemical resistance\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eResistant to chemical degradation\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;\"\u003eApplications\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eConcrete floors, basements, crawl spaces, screed and UFH installations\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;\"\u003eVariants: 4m wide black polyethylene DPM rolls\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#00837714; font-weight:700; color:#008377CF; padding:8px 14px; font-size:14px;\"\u003e\n\u003cdiv style=\"flex:1 1 100px;\"\u003eGrade\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px;\"\u003eThickness\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px;\"\u003eRoll size\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px;\"\u003eCoverage per roll\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; font-size:14px;\"\u003e\n\u003cdiv style=\"flex:1 1 100px; font-weight:700; color:#008377CF;\"\u003e500mu\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px;\"\u003e2000 gauge\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px;\"\u003e4m x 12.5m\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px;\"\u003e50 m²\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; font-size:14px;\"\u003e\n\u003cdiv style=\"flex:1 1 100px; font-weight:700; color:#008377CF;\"\u003e300mu\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px;\"\u003e1200 gauge\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px;\"\u003e4m x 25m\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px;\"\u003e100 m²\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 thickness should I choose?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eThe \u003cstrong\u003e500 micron (2000 gauge)\u003c\/strong\u003e roll is the heavier grade for tougher conditions, while the \u003cstrong\u003e300 micron (1200 gauge)\u003c\/strong\u003e roll is lighter. Choose according to your specification and the build-up above the membrane.\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 gauge mean?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eGauge is a thickness measure used for polythene sheet. \u003cstrong\u003e1200 gauge equals 300 micron\u003c\/strong\u003e and \u003cstrong\u003e2000 gauge equals 500 micron\u003c\/strong\u003e.\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 much does each roll cover?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eThe \u003cstrong\u003e300 micron roll is 4m x 25m, covering 100 m²\u003c\/strong\u003e and the \u003cstrong\u003e500 micron roll is 4m x 12.5m, covering 50 m²\u003c\/strong\u003e. Allow extra for laps and upturns at the edges.\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 it be used under underfloor heating?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eYes. It is commonly used as the \u003cstrong\u003emoisture barrier under insulation and screed\u003c\/strong\u003e in UFH installations, such as under Tekwarm UFH boards on a solid ground floor. Follow your insulation and UFH manufacturer's instructions.\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;\"\u003eIs it suitable for domestic and commercial projects?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eYes. It suits \u003cstrong\u003eboth domestic and commercial\u003c\/strong\u003e projects, including new build and renovation.\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 should I install it?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;\"\u003eRoll out over a \u003cstrong\u003esmooth, clean, sound base\u003c\/strong\u003e, lap and seal joints with suitable DPM jointing tape, and protect it from damage until it is covered by insulation or screed.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Tekwarm","offers":[{"title":"300mu 4m x 25m","offer_id":68391011254662,"sku":"BM01752","price":55.0,"currency_code":"GBP","in_stock":true},{"title":"500mu 4m x 12.5m","offer_id":68391011287430,"sku":"BM01750","price":45.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/damp-proof-membrane-300mu-500mu.jpg?v=1794205790","url":"https:\/\/qualityheating.co.uk\/products\/black-dpm-roll-4m-wide-300mu-25m-or-500mu-12-5m-polyethylene","provider":"AIZO Quality Heating","version":"1.0","type":"link"}