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Housing - New Build: Acoustic absorption in internal partitions...

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    • CommentAuthorCWatters
    • CommentTimeAug 14th 2012 edited
     
    If this is for a new build the walls will need to meet Part E so the BCO will have to approve the design. There are two parts E1 and E2. One is for interior and the other exterior walls/floors. Can't remember which is which.
  2.  
    E2 (as the doc Mike put up)

    PERFORMANCE STANDARDS TO BE MET:

    LABORATORY VALUES FOR NEW INTERNAL WALLS AND FLOORS WITHIN: DWELLING HOUSES, FLATS AND ROOMS FOR RESIDENTIAL PURPOSES, WHETHER PURPOSE BUILT OR FORMED BY MATERIAL CHANGE OF USE.
    Airborne sound insulation sound insulation Rw dB (MINIMUM VALUE)
    Walls
    40
    Floors
    40

    Partitions and internal walls - Approved Document E – Guidance constructions deemed to provide a minimum of Rw dB = 40dB

    Timber Stud:
    2 x 12.5mm WallBoard either side. 75mm x 38mm studs at 600mm centres max. All joints to be well sealed.
    Timber Stud:

    12.5mm British Gypsum WallBoard TEN (or 15mm Knauf standard wallboard) either side. 75mm x 38mm studs at 600mm centres max. 25mm Isowool or Crown Acoustic Partition Roll or similar in the cavity, all joints to be well sealed.

    J

    (in this case then build up approved at full plans stage is roughly as the latter, its now just a matter of the end user satisfaction...)
    • CommentAuthorTimSmall
    • CommentTimeAug 16th 2012
     
    Posted By: davidfreeboroughI've never seen rigid polyurethane insulation recommended for sound absorption, even by the manufacturers.


    Nope, but open-cell high density polyurethane foam is - it performs somewhat better than rockwool (but not enough better that I've ever needed to use it), and is better in some circumstances as it doesn't lose fibres (e.g. duct insulation). e.g.

    http://www.customaudiodesigns.co.uk/polyurethane-acoustic-foam.htm
  4.  
    I'm guessing its expensive Tim...?

    J
    • CommentAuthormarktime
    • CommentTimeAug 16th 2012
     
    11.50 euros /m2 for me. Love it 'cos it don't make me coff!!!!!!

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