Siderise CVB Acoustic Void Barriers for Ceilings & Floors

The rockfibre insulation core is available in two different structural forms:

• SFO (conventional, i.e. direction of the internal fibres predominantly aligns with that of the barrier itself).
• HSL (special ‘lamella’ construction, i.e. the internal fibres have a perpendicular orientation and additionally are held in a pre-compressed state).

The advantage of the HSL construction is that it offers improved acoustic performance at lower surface weights. Additionally, the HSL version is more compressible in the plane of the barrier, assisting friction fitting and aiding deformation around service penetrations.

The SFO form is also optionally available with the inclusion of a central limp heavy membrane. The surface weight of the polymeric membrane (P10) is 10 kg/m².

Features and benefits:

• CVB/LAM:
• Acoustic performance (R_w): 23–25 dB.
• D_nC,w up to 45 dB.
• Fire Resistance: 30–60 minutes.
• Reaction to Fire classification – A1.
• CVB/P:
• Acoustic performance (Rw): 28–31 dB.
• D_nC,w up to 55 dB.
• Reaction to Fire classification - B-s1, d0.