Originally Posted by
onehundred80
I have to do this again as I obviously did not use enough glue as both areas toward the windows above the driver and passenger heads has dropped again. In these areas the material is stretched the most and slowly pulled away from the headliner.
While I didn't actually replace the headliner material in my Coupe (just the removal & installation of the headliner itself), the shop I used in town took considerable pains to make sure there was sufficient material to wrap over all the edges of the support board. They claimed that was the only way to keep the headliner material from slipping out & "sagging" along the edges. (Note: They showed me how the OEM headliner material barely went to the edge of the support board.) Probably kept them from having to "stretch" the material much, as you've reference in your comments above. And if they didn't have to create tension from stretching, maybe that's how they achieve some success with the headliners they re-cover. Just guessing!! My $0.02 - FWIW.
Good luck with your headliner re-work. It really is a pain just taking it out & back in!!