Isocheck PRIMO acoustic flooring systems from Isomass are designed to reduce sound transmission through traditional / composite timber / steel joisted floors within new build and older light weight frame constructions. Isocheck PRIMO 26 consists of a 8mm layer of melamine-free APF bonded to 18mm P5 V313 moisture resistant chipboard. When installed as part of a complete party floor construction the system enables a timber floor to meet the sound transmission standards of Approved Document E 2003 and subsequent amendments in 2004, 2010, 2013 and 2015. Application To be used over a timber deck and traditional / composite timber / steel joisted floors for conversions or new build timber frame with a decoupled ceiling as illustrated or approved by Isomass. . Isomass offer a free acoustic detail design service to Building Materials Nationwide Ltd customers, please visit the contac t us page to get in touch.