Pull the door opening trim down at each door.
2013 regal roof sagging.
Rv sagging roof repairs non aluminum rv s the vast majority of rvs built today have a vacuum bonded solid roofing structure.
If you refer picture 6 rear view while pulling down you can see that the lower mate on the topside of the headliner is mounted to a white box of sorts.
I finally pulled down a on the headliner a bit and found the problem.
Glued to the headliner is a plastic ring that encircles the sunroof opening on the inside.
If you notice that there is a visible dip in your roof chances are you have a problem with one or several rafters and you may soon be facing more issues like water leaks bowed out walls or your roof caving in on you.
I tried to attached a pic here.
In most cases a sagging roof is caused either by a broken rafter or roof decking but in some more severe instances a damaged or sinking foundation can be the underlying cause of the problem.
Pull parallel to the side of the car.
Fyi if you have a sunroof and the headliner is loose and hanging low with light shining in.
Basically it s a one piece roof consisting of plywood decking on top some type of insulation installed between the support rafters with a panel type of ceiling finish.
Remove the sunvisers screws and be careful unplugging the wires up in the headliner.
The roof is made of timber mostly with alloy edges if it s sagging then the bonding isn t bonding and water ingress has rotted some of the timber.
If a roof dips in between rafters or trusses it s probably because the sheathing is too thin for the span.
Referring to the images all of the upper velcro looking tabs that are attached to the roof have a matching mate below them on the topside of the headliner.
You will need to get up into your attic and examine the roof carefully in order to discover the underlying cause.
Pull the a c pillar plastic trim away from the windows they trim.
Remedies for a sagging roof.
Pull the trim down off from the courtesy light put the front seat backs back.
If the roof sags between the rafters or trusses the most likely cause is sheathing that s too thin for the area it covers.
You can simply have the old sheathing replaced with better material when it s time for new roofing.
The fix here is to replace the thin sheathing with thicker sturdier sheathing.