EYG (East Yorkshire Glazing)

After thanking the men for the installation I went upstairs to inspect the work which they had done. On inspection I noticed that the windows which opened inwards were catching each other when fully opened in the tilt position, also I noticed a small mark on the bottom of the window, when i looked more closely the PVC looked as though it had been chipped, it was too late to inform the fitters as they had just gone, I know I should have checked before they went back having windows previously installed by EYG and had no issue's I just assumed the same with this one. At the cost of this window I don't expect any damage or misfitting windows, and i didn't expect to contact EYG within the first hour to complain abut this problem. The reason for one star is because of and also another issue not connected to the fitting or quality, this is one household that will l never use EYG again.