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Recycled contect used in this product
VL-65 is a high mass, visco-elastic acoustic damping membrane with the added advantage of improved low frequency performance over our other acoustic membranes. It is internally reinforced with a micro fibreglass carrier for improved dimensional stability.
|Freq, f, Hz,||50||63||80||125||250||500||1000||2000||4000||Rw|
|Test Report Number: 130702/002|
|VL-65 Technical Data|
|Roll Size||5.5m x 1m|
|Fire Resistance||>B,s1,d0 when used in partitions as shown below|
|Water Vapour resistance (µ)||50000|
|Maximum tensile strength||350 ±150 / 250 ± 100 EN 12311-1|
|Elongation||±45 EN 12311-1|
|Cold Flexibility||-10°C; EN1109|
|High Temperature flow resistance||120°C; EN1110|
VL-65 eliminates the coincidence dip around 2.5kHz found in rigid sheet materials such as plasterboard on studwork by 12dB.
The tests below show standard studwall constructions with and without VL-65 sandwiched between the sheets.
The low frequency resonance dip at around 160Hz is reduced by 8dB.
This superb material will improve the overall averaged Rw of a stud partition, as shown below, by 6dB.