draught drafts fan backdraught

  1. M

    Shower fan backdraught problem

    Hi, I have a Manrose in-line shower fan that exits through a roof space and through a pipe that goes up through a flashing plate in a pitched roof. What do people find is the best option to stop back draughts happening? I’ve looked into a back draught shutter that fits on the fan spigot, but...
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