2006 Mustang GT Convertible

Glass is bonded to top cloth. You must replace entire rear cloth section and sew it to the top. Requires top removal and upholstery sewing machine. Farm this job out.

take the vehicle to an accredited windscreen repairer/ replacer and discuss the problem with them. If it can be done they will have access to the glass and will be able to tell you where to get it fitted if it requires specialist attention.

This is a common problem. At the factory, the top material is bonded to the glass. That bond is breaking down. You can use Gorilla taps or urethane adhesive, but you will eventually need a new window unit.
The window unit is separate from the actual top. The top must be partially removed to replace the window unit.

Karl at aoksales.com

Installation of th e window takes special skills and tools. Please leave this to an automotive trim repair shop.

If the material is loose from the glass, you have a very common problem. Somtimes it can be repaired with urethane adhesive like is used to install windshields.
If that does not work, you must replace the window unit wich is SEPARATE from the top.
Get instructions here http://www.topgunwon.com/DVD/

This is a common problem with many cars. It is delamination. If the window is loose in spots, it can often be repaired with urethane adhesive like glass shops use for windshields. If the glass is more than 30% delaminated, chances of fixing it are slim. With the glass all the way out, you need a new top. Karl at topgunwon.com

i would take this to a window and glass place. this way you get a warranty

This problem is very common and is known as delamination.
If the problem is not too far advanced, you can repair it with Urethane adhesive. It is used by glass shops to install windshields.
Your top and window unit are two separate parts.
If the problem is beyond repair, you will need to remove the rear half of the top and replace the window unit.

Karl at topgunwon.com

This is a professional job for a conv. top shop. has to be sewn in at the bottom.

Removal
NOTE: Mark vinyl to be removed so it can be returned to the same position after disassembly.

1. Remove sail area panels as outlined.

1. Remove staples retaining elastic straps at each side of back window glass (42006) to rear tacking strip and folding top rear number 4 bow (51278) and remove elastic straps.

1. Remove staples retaining rear bow corner pad (537A71) and bottom of folding top back window curtain (52500) to rear tacking strips.

1. Remove staples retaining top of folding top back window curtain to folding top rear number 4 bow and remove back window glass .

1994 mustang. don't have 89 Window, Rear Installation
NOTE: Transfer markings from the removed assembly.

1. Mark with grease pencil center point on folding top rear number 4 bow in line with hole on rear of folding top rear number 4 bow .
   

To replace the window seal, you first have to remove the vent window assembly from the door. After it is removed, the nut and spring on the bottom of the window has to be removed. Then remove the glass and frame from the vent assembly frame. Then gently remove the rubber off of the frame and install the new one after you replace the top vent bar seals. Reverse the window removal procedures to reinstall the glass and frame. The top vent bar seals requires a special tool to remove and replace the rivets you get with the replacement seal. You need to replace the top vent bar seal before reinstalling the new vent window rubber. When I replaced my top vent seals, it was fairly easy with my removal/installation tool.