Isowave 23 system: upgrading timber ceilings



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Link to Isocheck Isowave 23 acoustic ceilings product data sheet
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Tested by NHBC Acoustic Services

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Acoustic ceiling system for:
•  New Build
•  Conversions
•  Refurbishments

The Isowave 23 acoustic ceiling system is for the treatment of excessive flanking sound that bypasses a separating floor via lightweight structural walls.

Isowave 23 consists of a 10mm Isowave acoustic foam measured to BS 4443 and BS EN ISO 845:2009 bonded to 12.5mm high density, square edged fibre-reinforced gypsum board

Isowave 23 incorporates acoustic foam which is semi rigid and is an excellent absorber with high damping characteristics when bonded to an acoustically reflective stiff surface. Isowave foam is manufactured using water as a blowing agent and is free of CFCs, HFCs or HCFCs.

Isowave 23 acoustic ceiling system complies with requirements of EU Regulation No 2037/2000 for ozone depletion and offers good thermal properties. It is ideal for upgrading separating floors/ceilings where access to the top of the floor is not possible.

It complies with requirements of EU Regulation No 2037/2000 for ozone depletion and offers good thermal properties.

Performance (on the constructions illustrated)

Reduces unwanted flanking noise in order to comply with Approved Document E 2003 and subsequent amendments in 2004, 2010, 2013 and 2015.

Product data

Board size:
1200mm x 600mm x 22.5mm
Isowave foam thickness: 10mm
Weight: 17.3kg/m2
Density: 1300kg/m3

Specification

The acoustic ceiling shall be:

Isocheck Isowave 23, supplied by Isomass Ltd. Units 10 & 11, Avenue Business Park, Off Brockley Road, Elsworth, Cambridgeshire, CB23 4EY and installed in accordance with manufacturer’s instructions / recommendations.

Installation

Fix securely to all supports working from the centre of each board outward to the edges using the specified method of fixing at 250mm maximum centres with countersunk cross-slot screws 3.9 x 30mm positioned through the decoupling bar. Position fixings not less than 20mm from board edges and 50mm from corners

The heads of all fixings should be sunk into the surface of the board and stopped with joint filler.

The square edged cement particle board should be sealed with an intumescent sealant, joints to be a maximum 1mm wide. Any excess adhesive to be removed using a spatula once the adhesive has fully hardened.

A 12.5mm tapered edge plasterboard with all edges taped should then be fitted. Skim and lightly sand if required.

Please ask Isomass for guidance when considering the weight of any new blocks which will be incorporated in a wall directly surrounding a timber separating floor.

System requires Pre Completion Testing


Isocheck Isowave 23 acoustic ceiling system 3D

 

Isocheck Isowave 23 acoustic ceiling system application detail

  • 200mm x 70mm timber joists @ 450mm centres.
  • resilient bars @ 400mm centres perpendicular to the joists.
  • 100mm 45kg/m3 insulation between joists.
  • Isowave 23.
  • 12.5mm tapered-edged plasterboard with all joints taped.

 

 

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