Re: deck leak

Arno Luijten

Hi James,

I'm aware of the differences between balsa and Divinycell, particularly the difference in adhesion to polyester. However Hallberg Rassy and many others have been using Divinycell since the eighties and correct me if I'm wrong, I've never heard of a soggy deck on a Halberg-Rassy. I used to own a 1992 model and the deck was solid, even with the gazillion holes because of the teak deck. Not that I would ever want a teak laid boat anymore, but that is another story. My previous boat had no teak deck but did carry a Divinycell cored deck and hull (above the waterline). Not a single problem manifested itself. I sold her when she was 16 years old.
The compression strength is something you can take into account when doing the structural calculations on the boat and should not be a problem.

So although there are some advantages to balsa I find it a poor choice for cored decks simply because water-ingress can be very hard to spot/monitor until it's at an advances state. There is a YouTube channel (Sail Life) that can illustrate the crazy amount of work it can be to rectify the problem once the balsa starts rotting.


Arno Luijten
SV Luna,

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