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Acoustic void closures for use in small and/or irregular shaped cavities to help reduce sound transmission between rooms.
Designed to effectively close small apertures and voids encountered in a wide range of building conditions.
Depending on the sound insulation performance required, they may be employed singularly or in pairs (fitted either 'back to back' or commonly to each side of a central mineral fibre resilient infill).
Examples of use include, top of wall junctions, gaps around service ducts, perimeter heater cases, continuous lighting trays and air diffusers.
Siderise AVC acoustic void closures are a semi rigid laminated composite combining outer resilient foam layers with an inner flexible mass barrier membrane. The closures are normally supplied cut to the final aperture shape but are also available in strip form (for linear gaps) or sheet form for site cutting.
They are intended to be compression fitted into an aperture to form an efficient acoustic seal. when used for large deflections the closures can be securely retained top and bottom by metal angle sections.
Color | Black Manufacturer guidance(Other colour options available subject to minimum quantities) |
Finish | Other Guidance for specification option: Matt black open cell foam both sides (or optional Foil Face to one side) |
Material | Composite Polymeric Polyurethane |
Shape | Rectangle Other Trapezoid |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Uniclass | |
CAWS | F30/670 Head of non-loadbearing walls G30/240 Fire resisting profile fillers |
SKU Code | AVC |
Product range |
Classification data | |
Composition | Laminated composite. Guidance for specification option: Resilient foam layers with an inner flexible mass barrier membrane. |
Performance characteristics | |
Fire performance | To EN13501-1, B-s1,d0. Guidance for specification option: No Fire Resistance rating. See Siderise TW firestop range for use with the Siderise AVC. Refer to manufacturer's literature for Fire Performance data. |
Sound insulation rating | 27–44 dB (Rw). Guidance for specification option: Single AVC Type 3: 27 db(Rw) (Assessed Value). Twin AVC Type 3 with 75 mm air gap: 44 dB (Rw) |
Physical properties | |
Weight (minimum) | 12 kg/m². |
Dimensions | |
Thickness (minimum) | 30 mm. |
Width (minimum) | Bespoke. Guidance for specification option: Die-cut to suit profile or cut strips (full sheets available for strip use). |
Material | Composite Polymeric Polyurethane |