Hi - Thanks to those who replied. However, I had already tried removing the plugs and using a hair drier. For three hours. Then, on another occasion, a fan heater for four hours and still have not fully got rid of the condensation which appears worse some days than others. Can anyone say with authority that acrylic IS porous in which case it would seem there will be more condensation after rain. Afriend says his last two brand new caravans had condensation from day one!