#27670
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    @JimmyT said:
    Don’t underestimate lateral noise transfer.  In many modern apartment blocks, all the units on each floor, sit on the same concrete slab.  But the best rule is the simplest – does the flooring cause a problem for neighbours?  

    Nothing is perfect but most slabs in older buildings are around 130 – 150mm thick which is not  great in respect to sound transfer even with carpet. On this thickness slab even carpet won’t deaden thumping sounds and heavy foot fall. Some people have told me that gold standard underlay does not work that well either depending on the thickness of the timber flooring used and thickness of slab.