Basically, as said above, the glass needs replacing. Your panes have lost there negative pressure and now the air is heating up inside just to the loss of vacuum
[quote="a6windows"]how is the opener for alignment with the frame check this first if it is out this will be causing your problem .is the sash striking the lock reciever in the outer frame.if it is the type with hinge at the bottom with a white cover remove cover and at bottom side of hing...
