For a brand required renovation, our Hampton Inn Debary was required to "repair or place the exterior window frames" to address the fading as they had suffered significant damage over the years due to the sun. SurpHaces was a local company who had previously used one of our windows to train some students on the proper application of one of their products. Based on great appearance of the demo window more than a year after its application, we contracted with them to complete all of our windows. They worked quickly and were able to repair the window frames, restoring them to a condition not seen in at least 10-15 years. I am very happy with the product. If I had a tip, though, I would have applied it at a much earlier time, which would have protected the windows from the beginning.