My headliner is in good shape as far as fit and no holes or rot. However is is severly molded from sitting for so many years. Does anyone have any suggestions on how I might clean it up?

Bleach might work on the mold, could try a bit on a Q tip.

Jim H
69 Malicruiser

My headliner was in great shape except for mold. I used some spray-on upholstery cleaner with great success. I would recommend using it when the weather will allow it to dry out after you clean it.