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Regs surrounding extractor fan ventilation......

Discussion in 'Building Regulations and Planning Permission' started by actiongirl5, 24 Jan 2014.

  1. actiongirl5

    actiongirl5

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    Location:
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    Hi,

    I recently posted a query on here about the installation of a bathroom extractor fan and after going back to my electrician that I found through "My Builder" and expressing how underwhelmed I was with the fan and I was worried about how he had vented it I think I may have found the answer to both.

    The electrician came out the property on Wednesday and he mooched around in the loft and replaced the 85m3/hour fan with one that extracts 110m3/hour of which he then told me I would then have to give in another £45 if I wanted to keep it. So I tested it out and after 3 minutes of running the shower in a bathroom that is warm and barely big enough to swing a cat around it was like a sauna. So I told him to remove it as it didn't really make any difference at all. On him leaving I found out the over run on the fan he had reset was left at the maximum of 1 hour so I called him to find out how to adjust this. He was really adamant that I he could do it and really didn't want me up in the loft.............but I now know why.

    I am good level DIYer and I can do most things if told what to do so I went up into the loft space and go down on to the floor and I can see why he didn't want me to look what he had done up there. Originally he had butted the external grill of the fan up against the eaves where the gap is not big enough to vent such a thing. So what he had done he had removed the external grill and wedged the bare ducting to try and force it through the eaves with nothing on the end of if. To me the ducting now appears crushed and he had also attempted to hide the grill he had pulled off in the loose fill insulation but I had seen a corner of it sticking up.

    I am sure this can't be within building regs to do this can it? I was always told that when you vent anything that extracts moisture it needs to vented externally and away from the building.

    Could anyone offer me any advice on this matter.

    Thanks in advance

    Mandy
     
  2. jeds

    jeds

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    85m³/hour is plenty for a bathroom but only if the fan and flue are correctly matched and correctly installed. Ignoring your vent grill issue for the moment; my advice is first of all find the exact model of fan you have and look up the technical specification. Check the type of flue it will work with and maximum length. Then check that against what you have installed. If everything is ok then you just have the grill issue to deal with. But if those things are not correct then you need a new fan, or flue, or both.
     
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  4. LearningSpark

    LearningSpark

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    Is there a 10mm gap under the bathroom door?
     
  5. actiongirl5

    actiongirl5

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    Hi

    Yes there is a generous gap under the door of at least 10mm.
     
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