{"product_id":"12mm-memory-foam-luxury-carpet-underlay-3-5-tog-49db-sound-reduction-mini-half-full-roll","title":"12mm Memory Foam Luxury Carpet Underlay | 3.5 TOG | 49dB Sound Reduction | Mini, Half \u0026 Full Roll","description":"\u003cdiv class=\"product-description\"\u003e\n\n\u003ch2\u003e12mm Memory Foam Luxury Carpet Underlay | 3.5 TOG | 49dB Sound Reduction | Available in 3 Roll Sizes\u003c\/h2\u003e\n\n\u003cp\u003eThe underlay that transforms a carpet. This 12mm premium memory foam carpet underlay uses the same bounce-back technology as high-end memory foam mattresses — delivering a level of underfoot comfort, warmth, and sound insulation that standard PU foam underlays simply cannot match. If you're investing in a quality carpet, this is the underlay it deserves underneath it.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in three roll sizes: \u003cstrong\u003eMini Roll (5m²)\u003c\/strong\u003e, \u003cstrong\u003eHalf Roll (7.5m²)\u003c\/strong\u003e, and \u003cstrong\u003eFull Roll (15.07m²)\u003c\/strong\u003e. All rolls are 1.37m wide.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Memory Foam Underlay Outperforms Standard PU Foam\u003c\/h3\u003e\n\n\u003cp\u003eStandard PU foam underlay compresses under foot traffic and never fully recovers — within a few years the carpet above it feels thin, the underlay feels flat, and the luxury feel is gone. Memory foam technology changes this fundamentally:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e92% compression recovery\u003c\/strong\u003e vs 78% for standard PU foam — the underlay springs back fully after every footstep, maintaining its loft and feel for the lifetime of the carpet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e49dB impact sound reduction\u003c\/strong\u003e — dramatically reduces footfall noise between floors; ideal for first-floor bedrooms above living rooms, flats, and anywhere noise transmission is an issue\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.5 TOG thermal rating\u003c\/strong\u003e — significant thermal insulation, reducing heat loss through the floor and contributing to lower energy bills\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDamp Proof Membrane (DPM)\u003c\/strong\u003e — built-in moisture barrier on the underside protects the subfloor from accidental spills that penetrate carpet and underlay\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eA+ Air Quality rated\u003c\/strong\u003e — low VOC, low formaldehyde construction; important for bedrooms, nurseries, and areas where air quality matters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e105kg\/m³ density\u003c\/strong\u003e — a genuinely high-density foam that stays firm and supportive rather than bottoming out under furniture\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\n\u003ctable class=\"specs-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eLuxury Memory Foam PU Underlay\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eThickness\u003c\/th\u003e\n\u003ctd\u003e12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eDensity\u003c\/th\u003e\n\u003ctd\u003e105 kg\/m³\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eTOG Rating\u003c\/th\u003e\n\u003ctd\u003e3.5 TOG (thermal insulation)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eSound Reduction\u003c\/th\u003e\n\u003ctd\u003e49dB impact sound\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eCompression Recovery\u003c\/th\u003e\n\u003ctd\u003e92% (vs 78% standard PU foam)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eBacking\u003c\/th\u003e\n\u003ctd\u003eDamp Proof Membrane (DPM)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eAir Quality\u003c\/th\u003e\n\u003ctd\u003eA+ rated — low VOC \u0026amp; formaldehyde\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eRoll Width\u003c\/th\u003e\n\u003ctd\u003e1.37m\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eLay black DPM side down, foam face up\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eSuitability\u003c\/th\u003e\n\u003ctd\u003eLuxury domestic — all rooms including stairs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eRoll Sizes\u003c\/h3\u003e\n\n\u003ctable class=\"specs-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eCoverage\u003c\/th\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMini Roll\u003c\/td\u003e\n\u003ctd\u003e5m²\u003c\/td\u003e\n\u003ctd\u003e3.7m × 1.37m\u003c\/td\u003e\n\u003ctd\u003eSingle room, hallway, landing\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHalf Roll\u003c\/td\u003e\n\u003ctd\u003e7.5m²\u003c\/td\u003e\n\u003ctd\u003e5.5m × 1.37m\u003c\/td\u003e\n\u003ctd\u003eMedium room, stairs + landing\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFull Roll\u003c\/td\u003e\n\u003ctd\u003e15.07m²\u003c\/td\u003e\n\u003ctd\u003e11m × 1.37m\u003c\/td\u003e\n\u003ctd\u003eLarge room, whole floor, trade use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhere to Use\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLiving rooms\u003c\/strong\u003e — the 12mm depth and memory foam deliver a luxurious, hotel-lobby feel underfoot that standard underlays cannot achieve\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBedrooms\u003c\/strong\u003e — A+ air quality rating and exceptional thermal insulation make this the right choice for sleeping areas\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStairs and hallways\u003c\/strong\u003e — 92% compression recovery ensures the underlay maintains its performance through sustained high foot traffic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlats and apartments\u003c\/strong\u003e — 49dB sound reduction significantly reduces impact noise transmission to the floor below\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDining rooms\u003c\/strong\u003e — DPM backing protects the subfloor from food and drink spills that penetrate carpet\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\n\u003cp\u003eLay the underlay with the black DPM membrane face down and the foam face upward. Butt joins tightly — do not overlap. Secure joins with carpet underlay tape and fix corners with suitable spray adhesive. Trim to size with a sharp knife or scissors. Lay carpet over the top in the normal manner using gripper rods at the room perimeter.\u003c\/p\u003e\n\n\u003ch3\u003eOrder Guide\u003c\/h3\u003e\n\n\u003cp\u003eMeasure your room's length and width in metres and multiply to get the area in m². Add 10% for cutting waste and choose the roll size that covers your total requirement. For rooms wider than 1.37m you will need multiple strips — ensure joins fall in low-traffic areas where possible and always run strips in the same direction.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Slip Not Co Uk","offers":[{"title":"Mini Roll 5m² (3.7m × 1.37m)","offer_id":57339360805239,"sku":null,"price":124.5,"currency_code":"GBP","in_stock":true},{"title":"Half Roll 7.5m² (5.5m × 1.37m)","offer_id":57339360838007,"sku":null,"price":168.12,"currency_code":"GBP","in_stock":true},{"title":"Full Roll 15.07m² (11m × 1.37m)","offer_id":57339360870775,"sku":null,"price":261.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/1362\/1185\/files\/real_living_room_fitting.jpg?v=1785338914","url":"https:\/\/www.slip-not.co.uk\/products\/12mm-memory-foam-luxury-carpet-underlay-3-5-tog-49db-sound-reduction-mini-half-full-roll","provider":"Slip Not Co Uk","version":"1.0","type":"link"}