New inner skin over old roving before new core?

Discussion in 'Fiberglass and Composite Boat Building' started by metalsailer, Mar 31, 2019.

  1. Blueknarr
    Joined: Aug 2017
    Posts: 524
    Likes: 78, Points: 28
    Location: Colorado

    Blueknarr Senior Member

    Too bad I can't quote JamesG another half dozen times.

    WORKING OVER HEAD IS MANY MUCH MORE TIMES HARDER
    Use gravity to your advantage. The only way you will repair from inside out is if you turn the boat upside down.

    Moving on to core choice.

    How much stuff is attached to the deck? Fasteners grab plywood better than foam.
    Strips could work.
    Again don't work over head if you don't have too.
     
    metalsailer likes this.
  2. Blueknarr
    Joined: Aug 2017
    Posts: 524
    Likes: 78, Points: 28
    Location: Colorado

    Blueknarr Senior Member

    Here is another active thread on this site which might have information useful to you.

    Expanded PVC vs plywood

    Unfortunately, the link didn't seem to follow. It should still be easily found.

    If you do decide to use strips or tiles, it is possible to retain some structural integrity during the repair by working in smallish sections. The inactive supporting where you are actively working.
     
    metalsailer likes this.
  3. metalsailer
    Joined: Mar 2019
    Posts: 9
    Likes: 0, Points: 1
    Location: East Coast, USA

    metalsailer Junior Member

    Good to know. That is a consideration as the boat is cutter rigged. The foresail has a boom in addition to the mainsail boom with control lines lead back to cockpit using many pulleys and rope stops. There is a winch installed on starboard side with two cleats. Then of course there are hand rails installed on both outside and inside. Here is a look at the setup pulled from the internet.
    650978_29.jpg
     
  4. metalsailer
    Joined: Mar 2019
    Posts: 9
    Likes: 0, Points: 1
    Location: East Coast, USA

    metalsailer Junior Member

    I'll go look for the thread and give it a read, thanks.
     
  5. Blueknarr
    Joined: Aug 2017
    Posts: 524
    Likes: 78, Points: 28
    Location: Colorado

    Blueknarr Senior Member

    That is truely a whole lot of deck hardware.

    Definitely don't use foam under that mast foot.

    What ever core used you can easily replace local sections with thickened epoxy. Prevents rot in plywood or compression in foam.

    Before laying down the top skin, lay out deck hardware.and router out where the fasteners go. Then fill the voids, fair the core and glass it all in.
     
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  6. kapnD
    Joined: Jan 2003
    Posts: 437
    Likes: 29, Points: 28, Legacy Rep: 40
    Location: hawaii, usa

    kapnD Senior Member

    Choose your materials, then set your coring of choice in a mastic of thickened resin, some may squeeze through the holes, but it won’t just run out.
    You can tape over the most blatant holes from the inside.
    You might consider solid fiberglass “blocks” as core in locations where hardware will be attached.
     
    metalsailer likes this.
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