Very well. They took out the old windows and replaced with them with new windows. They did their job very proffesionally. They took down the blinds and window shades and replaced them after the job was done. When they took out the large picture window which was very fragile, they did it neatly and safely without braking it or cutting themselves. They called me before they came each day. It took three (3) day to do the inatallation. I was shown how to open, close, the windows including the safety latches, and how to open them to wash. It did rain one day and it did not bother them. If I had another house, I would use them again.