My house is two stories high in front and three in back. It's quite large with some high windows having a small roof outside, and the man washing those windows has to stand on that tiny piece of roofing. I'm impressed with how carefully and confidently he can balance and do a perfect job. The quality of all their work is excellent. Workers are friendly and seem to enjoy what they are doing. They've been washing my windows as long as I've lived here, perhaps 20 years. I highly recommend them.