[urq] Repair fiberboard inner door covers?

[Eric J. Fluhr]

Hi gang,

What suggestions do y'all have for repairing the fiberboard door covers? 
One of mine is damaged with
a ~5" jagged tear in the board, which is bulging out from the back an inch 
due to slight warpage of the panel.
I don't want to install the door panel for fear of it ripping apart the next 
time I remove it from the door.
I did a little research but did not find anything for that form of 
fiberboard repair.

I don't have any experience with the stuff, but I was considering epoxy 
resin laminate or perhaps layering on
fiberglass fabric with the epoxy resin.  System Three makes a form of it 
designed for wood+fiberglass boat
construction, which seems reasonably well suited to the fiberboard of the 
door card.   Does anyone have direct
experience with fiberglass that is relevant to this fix?

Thanks,
Eric
'82 urq