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    1970s plasterboard sandwich panel-water resistance


    My bathroom wall is old-style cardboard and plaster sandwich board. It's been soaked from above by a boiler leak and I wondered if the cardboard in the middle is compromised. I can't see it drying out very well and I'm concerned about mould as well as structural strength

    Asked by Chris on 8th Feb 2021
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    Best Answer


    "Gypsum boards must be completely replaced, preferably green ones"

    Answered on 9th Feb 2021 - Member since Oct 2019 - report
    Ts plastering

    "Hi if in doubt change it as boards normally don’t hold well after water damage"

    Answered on 8th Feb 2021 - Member since Jan 2021 - report
    GE Restoration

    "I would replace it with new as water saturation is hard to dry completely and would rot and possibly smell as time goes on"

    Answered on 27th Jan 2022 - Member since Jan 2022 - report

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