[Alberg30] Deck Repairs

[Mike Lehman]

Plus the old skin may be porous, which is what contributed to the problem in 
the first place.


----Original Message Follows----
From: George Dinwiddie <gdinwiddie at min.net>
Reply-To: public-list at alberg30.org
To: public-list at alberg30.org
Subject: Re: [Alberg30] Deck Repairs
Date: Fri, 1 Feb 2002 09:05:27 -0500 (EST)

 > Paloma L. Hawry said:
 >
 > 2) cutout and retain top skin (remove all rotted core attached), remove
 > damaged core, sand down to lower skin, replace with new core material 
(foam
 > or plywood) refill with resin to the correct level, replace and fair-in 
the
 > old skin, and repaint surface as needed

I don't know anyone who has taken this route, so I can't give any
first-hand advice.  Personally, I would worry about the strength
of this approach.  A cored deck is a stress-skin panel and relies
on the integrity of the skins.  Normally when you are bonding to
old glass, you should have an 8-to-1 scarf to give a good bond.
On the upper skin of the deck, this means a taper that's about
2 to 2-1/2 inches wide.  If you're putting two old pieces of
glass together, you'd want to do this on each of them, giving
you a 4 to 5 inch wide seam.  If you don't do this, you're
relying entirely on the adhesive qualities holding the panel
and the strength of the core at the joint areas.  Of course,
having a 4 to 5 inch seam negates much of the esthetic advantage
of reusing the old surface.

  - George

--
  ----------------------------------------------------------------------
   George Dinwiddie                             gdinwiddie at alberg30.org
   The gods do not deduct from man's allotted span those hours spent in
   sailing.                                    http://www.Alberg30.org/
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