Mass Loaded Vinyl (MLV) Available from Sound Insulations Ltd Mass Loaded Vinyl from Sound Insulations Ltd is tested to Euroclass B-s2-d0. This is a flammability test where other mass loaded vinyl products fail usually. It is manufactured in the UK and available in weights upto 12Kg/m2. Our mass loaded vinyl is usually supplied on rolls at an optimum width of 1.2m and a roll length between 1m and 6m. The applications for our DeciLAM and Deadener VB5 are vast, these include oil and gas insulation