Hello and welcome to our community! Is this your first visit?
Register
Results 1 to 5 of 5
  1. #1
    Join Date
    Nov 2002
    Posts
    2

    closed cell compared to marine plywood

    I am not new to boat building but I am building my first boat for myself. Just wanted to know two things. First how much more difficult is it to use newer composites (closed cell, kevlar, etc.) compared to plywood in composite small boat construction. Weight is my main factor not strength and cost. And two where can I find more in depth info on products and there production in my 18 ft. flats boat for super shallow water in Florida?
    Thanks

  2. #2
    Join Date
    Nov 2002
    Posts
    2

    core-cell

    how does it compare to closed cell core material like klegacell and core-cell
    Thanks

  3. #3
    Join Date
    Sep 2004
    Location
    Tampa Bay Area
    Posts
    5

    Unhappy PENSKE BOARD?

    No reference to it at Noah's. Where do you get the stuff? I've searched using google and found nothing. HELP!

  4. #4
    Join Date
    Sep 2004
    Location
    Tampa Bay Area
    Posts
    5

    Poly Gard

    I'm in Land O' Lakes, just north of Tampa. I found polygard on the net but there's no reference to sheet materials.

    Thanks!

  5. #5
    Join Date
    Mar 2001
    Posts
    399
    The main advantages of closed cell foam such as Corecell and Klegecell over plywood is a significant savings in weight over plywood and reinforced urethane such as Penske Board. A secondary advantage is it is impervious to rot, so very low maintenance. Typical foam density for boats up to 50 is 5 lb. per cubic ft, Balsa is about 10, plywood 30 to 40, Urethane 10 to 40. Cost of foam core, polyester resin, E glass construction is comparable to Marine Plywood/Epoxy. Epoxy with foam core is more expensive, but you are usually able to trade this off with a lighter laminate so there is some saving in material and weight. One disadvantage of foam core is lower compression strength than Balsa or plywood so it is necessary to use high density foam or plywood inserts where you are bolting hardware.
    Plywood is easy to use, cost effective and light enough for smaller boats, under 20, as well as interiors and transoms, but foam core should defiantly be considered for larger boats, particularly where low weight is desirable.


 

Similar Threads

  1. Plywood Marine or Wolmanized
    By rountred in forum Other Questions ?
    Replies: 2
    Last Post: 02-02-2009, 01:43 AM
  2. Marine plywoods
    By erbinsky in forum Stitch & Glue Construction Forum
    Replies: 7
    Last Post: 03-07-2006, 10:08 PM
  3. Joining Plywood questions
    By Blacksmith in forum Stitch & Glue Construction Forum
    Replies: 5
    Last Post: 05-21-2005, 02:58 PM
  4. Transferring plans to plywood?
    By paddlerken in forum Stitch & Glue Construction Forum
    Replies: 3
    Last Post: 03-27-2005, 08:35 PM
  5. marine plywood confused
    By team1 in forum Other Questions ?
    Replies: 1
    Last Post: 04-17-2001, 09:16 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •