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Condensation in shed

  • 06-01-2024 10:18am
    #1
    SierraTango
    Registered Users Posts: 114 ✭✭


    I have a 8"x8" wooden shed that was lined with a membrane. It constantly caused my tools to get rusty so I insulated all walls and roof with foil wrap which I thought improved the situation. Now though the foil on the roof is constantly accumulating water droplets from condensation.


    There's a grill vent on the back wall that doesn't get much air flow as it's not facing the prevailing wind. Would it be an idea to remove some of the foil on the ceiling to improve breathability or install a vent in the front to get cross ventilation?



Comments

  • #2
    Lumen
    Registered Users, Registered Users 2 Posts: 31,141 ✭✭✭✭Lumen


    I'd install another vent to start with. The pressure differences should drive airflow.

    If the ceiling condensation isn't dripping on to your tools then it's not the end of the world. Better condensation on the ceiling than on the tools. But I don't think foil wrap (if it's the bubble wrap stuff) is worth a damn. You're better off with something hygroscopic like woodfibre (cheap-ish) or calcium silicate (expensive) which will buffer moisture over the day-night cycle.



  • #3
    Padre_Pio
    Registered Users, Registered Users 2 Posts: 5,359 ✭✭✭Padre_Pio


    Ventilation is your problem. you have warm, moist air entering slowly throughout the day and it's not replaced by colder dry air quickly enough at night, so the water condenses.

    Your insulation would only be useful if the shed was heated, but it's not, and this time of year it's useless.

    You need to have some decent air flow entering the shed to dry it out. Put a few extra vents somewhere where rain can't get it and you should be fine.



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