Can't open Milgard Aluminum Single hung windows
I have 10yr old Anodized Single Hung Milgard windows. They have a latch handle on top of the lower window that has Milgard stamped on it. What is happening is that when I try to open the windows it seems that the top seal on the lower window catches on the upper fixed window catch that the lower window latch hooks onto to lock the window. Once I lift up hard enough the lower window seal will go past the upper window catch area, then the window will go up and down easly. All of the windows do the same thing. So I think it's either the seal has hardened up or expanded. There are no signs of corrison where the seal is located. Any thoughts?