gallons resin per square yard fiberglass material?

Discussion in 'Fiberglass and Composite Boat Building' started by restornator, Apr 22, 2008.

  1. restornator
    Joined: Jul 2007
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    Location: louisville

    restornator Junior Member

    is there a standard chart that gives estimates on how much resin is needed for each kind of fiberglass material? i wouldn't know where to find one, but it would be usefull for bulk purchases. BTW i'm new to fiberglass boat building. I have an old 14' bass boat that i'm gonna start with (deck, hatches, transom, stringers, the likes) to gain some experience and hopefully have a nice finished product
     
  2. Roly
    Joined: Jul 2005
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    Roly Senior Member

    For hand laminating woven & stitched cloth (not csm) allow a resin to glass ratio of 60:40 (%) 60% resin to 40% glass by weight. If you do better, 50:50,
    all the more power to you. Search FRP resin to glass ratio.
     
  3. dereksireci
    Joined: Jun 2004
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    Location: South Carolina

    dereksireci Senior Member

    Glass to Resin ratio

    One quick and reasonably accurate way to estimate resin usage is to calculate it using the glass to resin ratio you expect to produce.

    For example a layer of Vectorply 3610 0-90 bi-axial (E-LTM 3610) is 45.42 oz per square yard or a little over 5 oz per square foot. If you expect a 40:60 glass to resin ratio, then figure 5 (glass) is to X (resin) as 40 is to 60. Each square foot of fabric will require 7.5 oz of resin. Add 10% for overspray, waste left in the bucket... Make it 8.25 oz of resin as a starting point. I teach this method for determining how much resin or gelcoat to mix when making repairs.

    djs
     
  4. Sam III
    Joined: Sep 2007
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    Sam III Junior Member

    If you were doing resin infusion, what would the target be 50:50 similar to vacuum bagging hand laminates?

    Sam
     
  5. SamSam
    Joined: Feb 2005
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    SamSam Senior Member


  6. restornator
    Joined: Jul 2007
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    Location: louisville

    restornator Junior Member

    thanks for the chart and replies. I got it now: ~30:70 for csm and ~40:60 for cloth and WR. the cost of resin must really build up.
     
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