I have my sewing room in the basement. I keep a dehumidifier running all the time. I have only had one issue of water damage and that was because out hot water tank died. So I learned a valuable lesson either keep things off the floor or in rubber made containers! I have my washer and dryer down there so I can do the laundry while sewing. I am on a cement floor and have those interlocking rubber mats, the one that look like puzzle pieces, under my feet at my machine, cutting table and on either side of my quilting frame. Some days I wish I was upstairs sewing in my sun room with the view of the lake, but we can't have it all.