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  • I have experience but in the wrong way. We had oil heating and extraction was never an issue. Moved to gas heating (unlimited hot water), and we have a huge issue with damp. I can’t advise on the solution as we haven’t worked it out yet.
    I can advise that, at some stage, we will need the bathroom repainted [F&B) and possibly, a little bit of plaster replaced.
    I’m not happy. We have moved the extractor vent to right above the shower and that has helped but not enough. A spark looked at our in line fan and said it was fine - strong enough etc but not to extract the massive amount of steam from a 30 minute shower. My daughter likes long showers!

  • Is there enough air getting into the bathroom, so the extractor fan can remove steamy air.

    You need a 1cm gap under a door to be near a 100mm round duct.

  • That’s a good point. There ‘should be’, certainly the door isn’t air tight and there is a small vent in the window.

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