Gleb in Richmond Hill

We have replaced all windows and patio doors with GTA Windows. Since this was quite a job, we did it in 3 passes over a couple of years and we were amazed with consistently great service they delivered. From the first call to installation they were impecable - always on time, clean and fast installation, very professional. We are having no problems at all with the windows and patio doors we bought from them and the heating bill actually did go down! I am recommending them to my friends and colleagues and whoever worked with GTA Windows was as happy as we were.