Removing wood framed window bonded with liquid nail
We are working on a project to replace most of the windows in a custom home. These windows are double-glazed and wood-framed. Reason for the replacement is condensation between the window panes. We have found to our dismay that the builder, or whoever, had installed these windows to the wood frame with liquid nail. It is near impossible to remove the outside wood stoppers without damaging them. It is but impossible to get the old windows out of their wood frames the traditional way. There has to be a method of softening the liquid nail which is bonding the window to its frame prior to removing the glass. What is the best chemical solution to use? We need something that is liquid enough to penetrate inside the frame. We believe this problem has been dealt with before. Any pointers? Thank you in advance for your help.