{"product_id":"polythene-dpm-4m-x-25m-300mu-black-bd3004025bk","title":"Polythene DPM 4M X 25M 300mu Black (BD3004025BK)","description":"\u003ch3\u003ePolythene DPM 4 m × 25 m 300 µm Black (BD3004025BK)\u003c\/h3\u003e\n\u003cp\u003eThis black polythene damp‑proof membrane is engineered for use in ground‑floor slabs and similar applications to effectively block moisture ingress from the ground. Measuring 4 m wide by 25 m long (covering 100 m² per roll) with a nominal thickness of 300 µm (approximately 1200 g\/m²), it offers a durable barrier layer beneath concrete or screed.\u003c\/p\u003e\n\u003cp\u003eThe membrane is manufactured from high‑quality recycled polythene and is BBA‑certified, ensuring compliance with UK building regulations and suitability for use as a “Type A” membrane under British Board of Agrément certification. Its wide width aids rapid installation with fewer joints, and its robust gauge helps resist puncture and damage during construction.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eRoll size:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4 m × 25 m (100 m²)\u003cbr\u003e\u003cstrong\u003eThickness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e300 µm (~1200 g\/m²)\u003cbr\u003e\u003cstrong\u003eColour:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBlack\u003cbr\u003e\u003cstrong\u003eCertification:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBBA‑certified, complies with BS EN 13967:2012 type requirements\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLarge 4 m width reduces number of laps and simplifies installation\u003c\/li\u003e\n\u003cli\u003e300 µm thick film provides enhanced durability and puncture resistance\u003c\/li\u003e\n\u003cli\u003eBBA certification offers assurance of long‑term performance and compliance\u003c\/li\u003e\n\u003cli\u003eManufactured from recycled polythene for environmentally conscious projects\u003c\/li\u003e\n\u003cli\u003eSuitable for installation under concrete slabs, between slab and screed, or in other ground‑floor applications\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Huntley Group \u0026 Son Ltd","offers":[{"title":"Default Title","offer_id":59243390435662,"sku":null,"price":55.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0795\/6814\/files\/DPM_127.webp?v=1774352745","url":"https:\/\/huntley-group.co.uk\/products\/polythene-dpm-4m-x-25m-300mu-black-bd3004025bk","provider":"Huntley Group \u0026 Son Ltd","version":"1.0","type":"link"}