When we moved in, the west side of the great room had a gutter above the windows to divert rainwater away from the door and windowsills, but the south side did not, so we decided it would be a good thing to add one to help protect things from future rot. Once Humberto and Alonzo were done with the massive exterior painting and fixing project, I had Commercial Gutter, the mob who installed gutters on the house a year earlier, back out to install one more gutter for us. It was a pretty easy job, as they again made a gutter onsite to fit the space, then fitted it to dump into the one running along the south side of the house.
One benefit from this small project was that, when the rains finally came that winter, there was far less water sheeting down the southern great room windows.