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Division of wiring in different flats in the floor void.

aligarjon
Hi Guys.   Hoping someone can point me in the right direction please.  I looked at an existing set-up where a section of a large house has been split into 2 flats for rental, one above the other.   Currently a sub-main feeds from the main house to the bottom flat where there is a consumer unit feeding both flats.  The idea is to split this up so that each flat has it's own CU and sub-meter.  Looking at the labelling on the CU the 2 flats individual socket and light circuits etc are wired separate so potentially just a case of re-routing a few cables and maybe extending.  They are hoping that in the future they may get a new metered supply put in so that it could be sold on it's own at a later date.


My question is services wise who owns the ceiling void, i am presuming it is the flat below.  Currently i am also presuming that the socket circuit for the above flat and probably other wiring for it is also in this same void.  I think this is a problem for future isolation purposes  if the wiring is to be split over new CU's and the circuits will need rewiring  ?  


Ant thoughts please.



Gary


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    For reasons of fire and acoustic isolation, there should be a double ceiling. If  it is joists and plasterboard, in a recently partition job to building control's satisfaction  I'd expect to see the wiring for upstairs in beneath the floor and above the firebreak, and the wiring for the flat below in the space above their suspended ceiling and below the firebreak. (edited to add or running round the top of the walls in the upper 'safe zone' downlighters that would cut the fireboard ought to be on a suspended ceiling that is not the firebreak)


    There are plenty of older ones however where there are wires from more than one flat in an undignified tangle in some building void, and occasionally it causes problems. If they are being let by a common landlord and only the landlord can authorise  wiring work it is not so serious but if they are in effect separate leaseholds, and may be re-wired by the occupants, it can get quite messy.

    M.


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  • 0
    For reasons of fire and acoustic isolation, there should be a double ceiling. If  it is joists and plasterboard, in a recently partition job to building control's satisfaction  I'd expect to see the wiring for upstairs in beneath the floor and above the firebreak, and the wiring for the flat below in the space above their suspended ceiling and below the firebreak. (edited to add or running round the top of the walls in the upper 'safe zone' downlighters that would cut the fireboard ought to be on a suspended ceiling that is not the firebreak)


    There are plenty of older ones however where there are wires from more than one flat in an undignified tangle in some building void, and occasionally it causes problems. If they are being let by a common landlord and only the landlord can authorise  wiring work it is not so serious but if they are in effect separate leaseholds, and may be re-wired by the occupants, it can get quite messy.

    M.


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