LookRyt panel: High impact styrene. Melting point: 160-180§C (unlined).
Box quantity: 1 set.
Box size: 44cm W x 19cm H x 22.5cm D.
Box weight: 0.756kg.
Measurement of airborne sound insulation was made in accordance with BS EN 20140-10: 1992.
Single number quantities were calculated in accordance with BS EN ISO 717-1:1997.
Equivalent area tested to BS EN 13141-1:2004 and independently verified by the BRE.
Also refer to: The Building Regulations 2000, Approved Document F,
The Building (Scotland) Regulations, Mandatory Standard 3.14,
The Building Regulations (Northern Ireland) 2000, Technical Booklet K,
British Standard BS 5250.
Questions & Answers:
Will installing more than one vent to achieve a greater free area have an effect on the acoustic performance? We asked the BRE who said ?The performance of the ventilator will not degrade when you put in more of them. The composite sound insulation performance of the fa‡ade will degrade if you increase the number of ventilators, assuming that they are one of the weaker links.?
Will the vent reduce sound from inside to outside as well as from outside to inside? The BRE has advised us that it?s reasonable to assume that ?reciprocity? applies to the vents. That is, the third octave values for sound reduction index are the same in both directions (out to in and in to out).
The full list of datasheets and performance data for all our products is available by clicking here.
We have also written a number of articles which you may find helpful when it comes to soundproofing a space as well as many aspects of acoustic treatment.