Heavy Condensation in Conservatory

Discussion in 'Builders' Talk' started by saxopete, Jan 12, 2018 at 7:50 PM.

  1. saxopete

    saxopete New Member


    Trying to help our elderly grandparents. They have a bungalow that already had a conservatory built when they moved in. They are suffering with severe condensation, beads of water on the rafters which is causing mould / dampness.

    They have tried opening the windows, damp catchers and running two dehumidifiers but to no joy. Doesn't help their washing machine is in there.

    I was going to suggest either popping a couple of air bricks in or putting a simple extractor fan in. Whats the peoples general opinion / advice for this type of thing? Just concious they are not young bless them and they are struggling to wipe if down daily and want to try and help them out.

  2. Devil's Advocate

    Devil's Advocate Well-Known Member

    It is damp even with all the windows open? With a howling wind passing through? Blimey.

    Most connies are simply not designed for winter use - they are not insulated well enough, and usually don't have adequate heating either (which is good news 'cos it would be expensive). They should simply have the doors to the house firmly closed and the connie windows cracked open; only go in there if it's a bright sunny day and it actually feels warm in there.

    If the doors are left open to the rest of the house, then all the warm moist air in the house will go in there and condense out on the cold surfaces. The only way to prevent this from happening - if you insist on leaving the house doors open - is to raise the temp in the connie to at least match that of the house - and also add ventilation too.

    That will cost a fortune, and is nuts.

    Ok, if they DO have the doors to the house left open, they need shutting. Then leave the connie windows on 'vent' setting. That should keep it dry.

    If they insist on using the W/M out there, then they need to put on their winter coats, hat and gloves first and dash out there.

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