Fiberglass lifespan

Discussion in 'Materials' started by Cacciatore, Sep 22, 2018.

  1. Cacciatore
    Joined: Oct 2008
    Posts: 87
    Likes: 0, Points: 6, Legacy Rep: 10
    Location: Italy

    Cacciatore Junior Member

    Hi Guys ,

    what is the fiberglass lifespan in seawater and swamp water without drydock works ?
    Features of fiberglass - Orthoptalic resin and Gelcoat
    Can I reach 20 years using Isoptalic / Neopentyl Gelcoat without blisters ?

    Thanks in advance for the support.
  2. ondarvr
    Joined: Dec 2005
    Posts: 2,806
    Likes: 487, Points: 83, Legacy Rep: 506
    Location: Monroe WA

    ondarvr Senior Member

    If you plan to leave it in the water 100% of the time then use either a good ISO, and/or a VE skin coat.

    You won't know a good ISO from a bad one, so use at least a VE skin coat.
  3. trip the light fandango
    Joined: Apr 2018
    Posts: 490
    Likes: 98, Points: 28
    Location: Rhyll Phillip Island Victoria Australia

    trip the light fandango Senior Member

    You can't work polyester etc over epoxy, but a coat of epoxy as a seal is more waterproof and harder than the others, however an intact gel coat,.. should last more than 20years submerged I would think. but I'm guessing a bit , it depends on what else is in the water.
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.