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Gas hob fitting in recess (regulation/restrictions)

Discussion in 'Building Regulations and Planning Permission' started by ClockPie, 31 May 2015.

  1. ClockPie

    ClockPie

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    Hi

    To be clear, I'm DIYing most things, but will be getting a gas engineer to do the gas pipe work and hob installation. This post is just planning Q :)

    1930s house, rectangular chimney breast in kitchen which I plan to open up and recess an electric oven and gas hob in and make a feature of it etc.

    The chimney is 45cm deep, but we'll put a false wall a the back and the hob will only be recessed around 25-30cm in, and thus the side walls will only be close to the back hob rings, the front will be "open". Extractor will be above at 76cm or whatever it needs. No high cupboards.

    The problem is - the chimney isn't wide - so I am guessing I can only open it to 70-73cm, and plan a very thin plaster to smooth, and then tile.

    So the back half of the hob may be 5cm from the side wall.

    I've looked at some hob manuals and they say the distance from side should be 10cm+ which I can't make fit.

    So is this a law/requirement/must-do - (and thus a gas fitter would refuse to fit) or just recommended?

    Rough picture below - not entirely to scale as don't know how wide the chimney internal can be made till I get going.


    ETA: All I can find is "For hobs, there is an exclusion zone that extends over the hob and a further 50 mm horizontally in every direction along the work surface, and upwards for 760 mm. In this zone, there may be no combustible materials" - which I can adhear to. The entire internal walls of the chimney will be tiled and the only thing in the recess will be the etractor at the correct height
     
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  3. denso13

    denso13

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    The manufacturer's instructions are the important ones and must be followed.

    For example

    [​IMG]
     
  4. ClockPie

    ClockPie

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    That's exactly the picture I saw.

    So that is a "mandatory installation law" rule meaning fitter would refuse rather than a "best practice for warrantee" a fitter would fit with a disclaimer?

    I saw "rules" saying For hobs, there is an exclusion zone that extends over the hob and a further 50 mm horizontally in every direction along the work surface, and upwards for 760 mm. In this zone, there may be no combustible materials which I could do, but not meet that picture/spec :(

    Why is this? Can't believe its "fire risk" of tiles??

    Thanks

    Need to look at a make that is a bit narrower....
     
  5. denso13

    denso13

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    You could put it like that. Installation instructions must be followed.
     
  6. ClockPie

    ClockPie

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    I will email the manufactures as I see no reason why this needs to be the case. One make (belling) actually say "A minimum distance of 78mm should
    be maintained between the hob and
    any side walls / combustible surface.
    Surfaces which are non-combustible, or
    are protected with suitable non-combustible material, may have reduced
    clearances.
    "

    So will be interesting to hear
     
  7. ClockPie

    ClockPie

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    Interestngly...

    The zanussi gas hob wants 100mm ether side.
    The zanussi cooker (oven & hob "freestanding") requires 2mm (yes - 2mm) either side. And that is for getting it in and out. It make no mntionin the manual about upper walls. Meaning the gas hob part of that is adjacent to the walls.

    So it can't be for a safety issue...
     
  8. DIYnot Local

    DIYnot Local

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