Used to hang wet washing out in Moscow at minus silly temperatures. Within 20 minutes it was solid. Bring it in and stand it in the corner. When it thawed, it was dry. Wife started moving furniture one day and rolled the carpets up. Out into the snow and laid them out. Shovelled snow onto the carpets and brushed it in with a stiff brush. Then hung the carpets over a fence and beat the snow out, before taking them back indoors again. I have never seen such clean and fresh smelling carpets as that day. She did it here in England a few years ago. Into the front garden. Neighbours all thought she had lost the plot.