If the adhesive on the tub surround has opened in parts of the seams how can I seal it again? What type of sealant and what type of prep work has to be done?
You need a silicone type caulk.
Making a Grave Surround?
Repairing Scratches on a Fiberglass Tub
Discoloration in a Fiberglass Bathtub
Cleaning a Claw Foot Tub
Removing Bleach Tablet Stuck in Toilet
Keeping Seams Together When Sewing