Re: any tips for installing headliner in cuddy?
First, it needs a lot of cleaning.
Clean and flat, sand down any pointy bumps.
Wires need to be re-routed or removed, the window frames removed, inside hatch frames...anything that sticks through needs to be removed.
I've made up-right "T" supports covered in carpet to help!
Like old school drywall!!
Cut a little longer so they slide and hold the material up against the ceiling.
It has to be done on a warm day...lay the headliner out flat so the folds/wrinkles can relax. At least a day or two in advance!
Hopefully you bought marine headliner.
With a lot of patience you can shape it almost anywhere!
A paint roller can help flatten it and shape it...sliding your hands will stretch it!
Spray a two foot wide strip of adhesive right down the center.
Start in the center and work out...working from the center, bow to stern about a foot...then move to the other side...center, bow to stern about a foot.
Don't stretch it too much! That will break the bond between the headliner and foam.
Move the supports as you go, take your time and let the adhesive do it's job!
Go too fast and it's sag city!!
After it's up and the glue has dried, come back and cut in the windows, hatch etc. and re-install the interior frames!