Mat/roving vs. DBM

Discussion in 'Fiberglass and Composite Boat Building' started by boatdude, Dec 9, 2007.

  1. boatdude
    Joined: Dec 2007
    Posts: 7
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: california

    boatdude Junior Member

    Hi,

    Are the DBM replacements for mat/roving layups of hulls?

    For example, typical layups of a 30' sportfisher in the 1970s would be a few layers of mat and then 18 or 24 ounce woven roving, mat, roving, etc until desired lamination schedule was met.


    Currently are the same type of hulls just laid up with a few layers of mat and then layers of DBM1708 to complete?

    Thanks

    Andrew
     
  2. Nojjan
    Joined: Sep 2006
    Posts: 111
    Likes: 4, Points: 18, Legacy Rep: 30
    Location: North Europe

    Nojjan All thumbs...

    I found that it's a good swap depending on where you use it. DBM contains an outer layer of mat so the difference is that you have 2 layers directional fiber or the same fiber woven. The directional layers in DBM gives higher glass-to-resin %. For other parts than the hull it can be better with woven roving, engine bed etc.
     
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