Siderise CW-AB Acoustic barrier overlay for façade firestops

Description

Siderise CW-AB comprises a high mass limp elastomeric membrane applied to a dense acoustic foam layer. The upper surface is faced with reinforced aluminium foil. The entire product is 12 mm thick.

Acoustic Considerations : The fire stop between the floor slab and façade represents a point of significant potential weakness in vertical sound transmission between floors. Our facades technical team can provide guidance around using this acoustic upgrade to meet the project's acoustic performance requirements.

Acoustic performance: As the CW-AB is sold as an acoustic upgrade for our CW-FS firestops, we have not tested its standalone performance, however for the purposes of assessment by project acoustic consultants, the Weighted Sound Reduction index (dB Rw) of the mass barrier layer alone is presented below in Table 1. See acoustic improvement below for the sound reduction index of this product in combination with the CW-FS firestop.

Additional acoustic performance increases can be achieved by combining the CW-AB and CW-FS with the Siderise CVB/C10 cavity barrier. Contact our technical team at technical.services@siderise.com for performance guidance or 1/3rd octave test data.

Acoustic improvement to the firestop zone: The Siderise CW-AB has been developed for use with our Siderise CW range of perimeter barriers and fire stops for curtain walling. Siderise fire stops already offer a good level of sound insulation performance (typically 22-25 dB Rw). This can be increased to 37 dB Rw by the addition of a Siderise CW-AB overlay. If further performance increases are required, our CVB/C-10 cavity barrier can be used in addition to achieve up to 51 dB Rw.

Features and benefits:

• Reduces floor-to-floor sound transmission.
• Ideal for remedial treatment after installation of firestops.
• Accommodates façade movement.
• Deforms to contours.
• Quality assured to BS EN 9001.