{"product_id":"hush-ffr-5mm-resilient-underlay","title":"Hush FFR 5mm Resilient Acoustic Underlay 10m x 1.25m","description":"\u003cstyle\u003e\n.sis-hush-ffr5{width:100%;max-width:920px;margin:0 auto;color:#1a1a1a;font-size:17px;line-height:1.68;font-weight:400}\n.sis-hush-ffr5 *{box-sizing:border-box;font-weight:400}\n.sis-hush-ffr5 h2{margin:28px 0 12px;padding-left:12px;border-left:3px solid #B71331;color:#000;font-size:23px;line-height:1.3;font-weight:400}\n.sis-hush-ffr5 p{margin:0 0 16px}\n.sis-hush-ffr5 ul,.sis-hush-ffr5 ol{margin:0 0 18px;padding-left:23px}\n.sis-hush-ffr5 li{margin-bottom:7px}\n.sis-hush-ffr5 .sis-seal-dimensions{padding:14px 16px;background:#f5f5f7;border:1px solid #e5e5e5;border-radius:8px;color:#B71331}\n.sis-hush-ffr5 .sis-seal-contact{margin-top:26px;padding-top:20px;border-top:1px solid #e5e5e5}\n.sis-hush-ffr5 a{color:#B71331}\n@media(max-width:600px){.sis-hush-ffr5{font-size:16px}.sis-hush-ffr5 h2{font-size:21px}}\n.sis-hush-ffr5 .sis-spec-block{border-collapse:collapse;width:100%;margin:0 0 22px;font-weight:400}.sis-hush-ffr5 .sis-spec-block td{padding:8px 10px;border:0;font-weight:400;vertical-align:middle}.sis-hush-ffr5 .sis-spec-block .dataicon{width:55px}.sis-hush-ffr5 .sis-spec-block img{width:35px;height:35px;object-fit:contain}.sis-hush-ffr5 .sis-spec-block tr:nth-child(even){background:#f7f7f7}\u003c\/style\u003e\n\u003cdiv class=\"sis-hush-ffr5\"\u003e\n\u003cp\u003eCushion footstep noise beneath your floor finish with Hush FFR 5mm Resilient Acoustic Underlay. Made from recycled rubber granules and fibres, it provides a thin, resilient layer beneath floor finishes on timber or concrete bases.\u003c\/p\u003e\n\u003cp\u003eEach 10m x 1.25m roll covers 12.5m². Hush FFR 5mm combines a modest floor build-up with a resilient rubber layer for new builds and refurbishments.\u003c\/p\u003e\n\u003ctable class=\"sis-spec-block\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"dataicon\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1377\/0999\/files\/Impact-rating35.png?v=1600508658\" alt=\"\" width=\"35\" height=\"35\"\u003e\u003c\/td\u003e\n\u003ctd class=\"datainfo\"\u003eFootfall sound insulation: 21 dB at 5mm (DIN EN ISO 140-8)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"dataicon\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1377\/0999\/files\/Thickness35.png?v=1600250854\" alt=\"\" width=\"35\" height=\"35\"\u003e\u003c\/td\u003e\n\u003ctd class=\"datainfo\"\u003eThickness: 5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"dataicon\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1377\/0999\/files\/Sheet-dimensions35_700986db-396e-4851-a410-6c8a03d0784c.png?v=1600510290\" alt=\"\" width=\"35\" height=\"35\"\u003e\u003c\/td\u003e\n\u003ctd class=\"datainfo\"\u003eRoll size: 10m x 1.25m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"dataicon\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1377\/0999\/files\/Icon___Area.png?v=1600510763\" alt=\"\" width=\"35\" height=\"35\"\u003e\u003c\/td\u003e\n\u003ctd class=\"datainfo\"\u003eArea: 12.5m² per roll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eWhere to use Hush FFR 5mm\u003c\/h2\u003e\n\u003cp\u003eUse beneath floating laminate or engineered timber flooring, or beneath carpet. The fine rubber granulate is bonded with a PUR elastomer to combine resilience with resistance to compression.\u003c\/p\u003e\n\u003cp\u003eFor tiled finishes, Hush’s guidance specifies FFR beneath plywood and an anti-fracture membrane with flexible adhesive. Plan these extra layers into your floor height.\u003c\/p\u003e\n\u003cp\u003eHush also specifies a 5mm FFR resilient layer beneath its Therm 18 dry screed underfloor heating board. Use the prescribed Therm 18 arrangement for this application.\u003c\/p\u003e\n\u003ch2\u003eAcoustic performance for the 5mm underlay\u003c\/h2\u003e\n\u003cp\u003eHush publishes 21 dB footfall sound insulation at 5mm under DIN EN ISO 140-8. This describes impact sound improvement from footfall; it is not an airborne sound rating.\u003c\/p\u003e\n\u003ch2\u003ePlanning your installation\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUse Hush FFR 5mm as the resilient layer above a timber or concrete floor.\u003c\/li\u003e\n\u003cli\u003eFloating laminate and engineered timber can be laid directly over the underlay, following the floor-finish supplier’s fitting requirements.\u003c\/li\u003e\n\u003cli\u003eFor stone or tiled finishes, include the specified plywood, anti-fracture membrane and flexible adhesive.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHush supplies detailed FFR fitting instructions on request. Select the fixing or bonding method for your chosen floor finish before installation.\u003c\/p\u003e\n\u003ch2\u003eHow many do I need?\u003c\/h2\u003e\n\u003cp\u003eAdd your chosen allowance for joints and cuts to the room area, divide by 12.5m² and round up to whole rolls.\u003c\/p\u003e\n\u003cp\u003eFor example, a 30m² room with an optional 10% allowance needs 30 × 1.10 ÷ 12.5 = 2.64, rounded up to 3 rolls.\u003c\/p\u003e\n\u003cp class=\"sis-seal-contact\"\u003eFor help with the right quantity for your project, call our technical team on 01928 571 856 or email \u003ca href=\"mailto:hello@soundinsulationstore.co.uk\"\u003ehello@soundinsulationstore.co.uk\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"HUSH","offers":[{"title":"Default Title","offer_id":59172852367743,"sku":"HUSHFFR5MM","price":93.76,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1377\/0999\/files\/Hush-FFR-REsilient-Underlay.jpg?v=1794481303","url":"https:\/\/www.soundinsulationstore.co.uk\/products\/hush-ffr-5mm-resilient-underlay","provider":"Sound Insulation","version":"1.0","type":"link"}