Shower surround repair

[hawkster33]

The shower surround, on my 1999 Eagle, has developed a 1/32" wide crack about 20" long on two of the panels. What is the best adhesive or caulk to use on repair? What is the material used on these surrounds.

[jeffdee]

The Dicor caulking I have used to repair the roof would work in the shower. However, a good quality latex bath and shower cauld will work just as well only cheaper. The shower surrounds are probably an ABS plastic glued to the walls.