The first thing you need to do is check the outside of your window. you need to look at the reveal(this is the space around where the sash closes into the frame). If you have a brick home you may have "Brick Pinch". This is were the house has settled and the brick is pushing on a side of the sash. This can only be fixed by cutting the brick along the side of the pinched sash. This can be very complicated, so i would recommend hiring a brick mason. If you don't have a brick home this could just be a dry, non-lubricated track. I suggest cleaning and lubricating the track with a high grade silicone release spray, This will make your windows move more freely and could prolong the life of the hardware and operating part of your window.Have any questions, post some comments or call us: 1-800-368-9556
