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direct bonded board to brick walls and cable ccc/installation method...along with ever increasing insulation efforts

psychicwarrior

... is it reasonable to consider direct bonded construction, as a stud wall ?

and when it comes to installation methods would it be reasonable to consider for when the cable is against the board or against the brickwork

- no insulation  method 'C' ?

- with insulation method  102 (flat) and 'A' (round) ?   [bit hit on cable CCC gulp!]

e.g. pick a cable...   4mm T&E,  clipped to brick (on an external wall possibly), direct bonded boarding over it with some form of insulation inbetween, then OCPD @ 32A is *not* fine

regards to all

Habs 

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  • 0

    direct bonded construction

    Is that plasterboard 'glued' to the substrate? or plasterboard with thermal insulation backing? or something like SIPs with an outer skin of brick?

    Perhaps the way properties are constructed needs a proper review

    +1 for that! With passivhaus levels of thermal insulation often the only sensible way is to keep all the wiring on inside of the insulation - e.g. in a 25mm service void between plasterboard and insulation. Trying to hide wiring inside or behind thermal insulation opens up many cans of worms - not just heat loss from the cables, but also things like air tightness and condensation control - far better to design out the problems than try to work around them.

       - Andy. 

  • 0 in reply to AJJewsbury

    hello Andy - 'glued' to the substrate  (as in 'dot dab') - with some insulation in play (however it may be).

    I was just curious (as to the installation method classification where there is plaster board, insulation then cable on the brick wall for instance ... and what method if the insulation is touch and not touching.

    Thank you

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  • 0 in reply to AJJewsbury

    hello Andy - 'glued' to the substrate  (as in 'dot dab') - with some insulation in play (however it may be).

    I was just curious (as to the installation method classification where there is plaster board, insulation then cable on the brick wall for instance ... and what method if the insulation is touch and not touching.

    Thank you

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