Blue Sky cleaned the windows in my house this week. They did an excellent job and everything was perfect. Caleb, the crew chief, even walked through the house with me, inside and outside, to make sure everything was done right. I live in an old house, 100+ years, and have several mullioned windows (multiple separate panes in one window) in addition to the original glass. They were very careful and all is still in tact shining beautifully. The crew is friendly, polite and very careful, even wearing booties. I recommend them without reservation and will use them in the future too.