When my patio door began to leak along the bottom, I called several door and window installers (including the maker of the door) to see if I could get a serviceperson to come and repair it. No one would take on the task. They seemed more intent on selling me a new patio door. Luckily, I found the Window and Door Repair and Service Center. I made an appointment with Petra for Frank to come and take a look. He diagnosed the problem area right away and fixed it quite quickly. I then asked him to look at a basement window that had recently started to leak. After pointing out that the window had been installed upside down (!!!!) and thus the drainage slot was in the wrong spot, he caulked all around and it should now be fine. With Frank, you really get the feeling that he is concerned about doing the job right for a reasonable cost, and leaving the customer satisfied. Punctual, professional, and uber-friendly -- I'd highly recommend him.