{"product_id":"pyrotek-silentstep-premium","title":"Pyrotek Silentstep Premium Acoustic Carpet Underlay","description":"\u003cp\u003ePyrotek Silentstep Premium is an 11 mm acoustic carpet underlay: a flexible mass-loaded barrier of 4 kg\/m² fused onto high-density premium foam. It goes under carpet to cut footfall noise and airborne noise such as speech through a lightweight floor, and Pyrotek calls it ideal for second storey timber floors in homes.\u003c\/p\u003e\n\u003ch3\u003eWhat the barrier adds\u003c\/h3\u003e\n\u003cp\u003eOver timber joists, Pyrotek says, a standard underlay only reduces impact noise and does little for airborne sound. The mass layer takes on that second job. Tested on its own to ISO 15186-1 and ISO 10140-4, the underlay rates Rw 28 and STC 28.\u003c\/p\u003e\n\u003ch3\u003eTest results belong to the tested floor\u003c\/h3\u003e\n\u003cp\u003ePyrotek's impact test (ISO 140-7:1998) was on a bare 18 mm timber floor. Laying Silentstep Premium over it took Ln,w from 92 to 56 and IIC from 18 to 54, and both changes mean less footfall noise below. Those figures describe that floor, not other constructions. Pyrotek advises getting your acoustic engineer's opinion on its data. Our article on \u003ca href=\"\/blogs\/blog\/acoustic-vs-thermal-insulation\"\u003eacoustic and thermal insulation\u003c\/a\u003e explains why a rating belongs to the whole build-up.\u003c\/p\u003e\n\u003ch3\u003eRoll and laying\u003c\/h3\u003e\n\u003cp\u003eOne roll is 1350 mm x 5 m, covers 6.75 m² and weighs 34 kg. Lay it foam side down and barrier side up along standard carpet gripper, on a dry, clean, smooth and level floor. Butt the joins and tape every one with good quality underlay tape, because the smallest gap at any join costs performance. Flat timber subfloors need no bonding or stapling unless specified. Full figures are in the table below.\u003c\/p\u003e","brand":"Pyrotek","offers":[{"title":"4 kg\/m² barrier, 1350 mm x 5 m (6.75 m²)","offer_id":67636076183734,"sku":"17054187","price":304.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/Silentstep_no_scrim_transparent_lowres-v2.png?v=1791896709","url":"https:\/\/awbm.com.au\/products\/pyrotek-silentstep-premium","provider":"AWBM","version":"1.0","type":"link"}