Sagging Headliner: Fixed Right 

Sagging headliners are no fun and the bain of many older vehicles, fortunately fixing it isn't as hard as you might think.
There are lots of ways to put a bandaid on the problem of a sagging headliner but there is only one correct way to fix it that will last for years to come. this is that method.
In this video I walk through the steps to replace the headliner on this Ford F-350, but the principal applied to many different applications.
There are some items you may need to complete this job:
3M Headliner Glue: amzn.to/3pdraZB
Headliner Foam Backed Fabric: amzn.to/3LXk97X
Drill Brush Set: amzn.to/44qN0ZT
(These are amazon affiliate links, I may earn a small commission on sales at no cost to you)