Costing for the shell

Discussion in 'Materials' started by Buckie, Jan 17, 2010.

  1. Buckie
    Joined: Nov 2006
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    Location: Newcastle upon Tyne

    Buckie Junior Member

    Hi guys, I;ve been given 2 quotes for the materials for a 43 footer yacht.

    DOUBLE HULL SKIN

    Outer Hull
    Gelcoat 4-6 mm
    Chopped strand layer 3 mm
    one layer of 10oz fiberglass
    two layers of 25oz fiberglass
    Airex core
    two layers of 25 oz fiberglass

    Inner Hull
    Gelcoat 3 mm
    Chopped strand layer 2 mm
    one layer of 10oz fiberglass
    two layers of 25oz fiberglass

    After fitting Inner hull to outer, Inject expanding foam to 2mm void.

    One at £5,708. and the other £11,270. That is for all materials needed. My dialema is why the big difference, the gel, and resins are to Lloyds standards so is it the cloth and tapes ?
     
  2. Itchy&Scratchy
    Joined: Jul 2008
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    Location: Oxford & South Africa

    Itchy&Scratchy Senior Member

    Both layups, sound a bit light for a 43 footer.
     
  3. Buckie
    Joined: Nov 2006
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    Location: Newcastle upon Tyne

    Buckie Junior Member

    You mean it would ost more ?
    I'm told the outer cloth ect is 18 mill plus 10 mill cor then 12mm inner cloth 12 mill ? Is that too thin ? 40mm ?
     
  4. dentaldude
    Joined: Jan 2010
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    Location: rhode island

    dentaldude New Member

    Material costs

    Material costs sound in the range for regular fiberglass, no exotics. Big question.... vinylester or epoxy resin and does this include deck attachment or stringers???

    I am currently getting costs on a 38 foot layup. hull/deck/stringers.

    big cost changes are in resin, glass schedule/type and technique (bagged,scrimp or cold).... is there only biaxial or one of those triax, any reinforcement, ect.....
     
  5. apex1

    apex1 Guest

    There is no cold moulding in GRP building!

    sorry
     
  6. dentaldude
    Joined: Jan 2010
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    dentaldude New Member


    I was throwing out ideas. APEX 1 .
     
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  7. SamSam
    Joined: Feb 2005
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    Location: Coastal Georgia

    SamSam Senior Member

    If one estimate is 1/2 the other, or twice the other, whichever way you look at it, you need some more quotes.

    Is the estimate for the same quantity and the same quality of materials?

    Did you give them a list of x amount of fabric and x amount of resin, or did you give them the plans and let them figure it out?

    Where did you get the layup schedule from?
     
  8. Buckie
    Joined: Nov 2006
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    Location: Newcastle upon Tyne

    Buckie Junior Member

    I give them the plans "quantities" from the layup schedule that with the mould.
     
  9. apex1

    apex1 Guest

    Have a third offer and / or try to figure it out here:

    http://www.r-g.de/
    go "English" then e-shop....

    You even find a basic layup calculator there "Lamicens" it is in German but easy to understand.

    And I concur with Itchy, the layup sounds a bit light.

    Regards
    Richard
     

  10. SamSam
    Joined: Feb 2005
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    Location: Coastal Georgia

    SamSam Senior Member

    You already gave the schedule, sort of, so it wouldn't hurt to put the (or some) quantities and prices quoted so others could comment on the price. You don't need to get any more specific on the schedule.
     
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