Gordon wrote:

30 foot sailboat, deck glassed to hull.
Toerail leaked allowing water to balsa core of deck causing no
more core.

snip the balsa deck core story

1)My guess is you are looking at a 2-3 year project working by
yourself and perhaps a part time helper.

2) When you decide to sell, you will NOT recoup your investment in
replacement materials.

The only way to do this job is to cut away the top skin, section by
section, dig out the balsa, most of which will be wet, then replace
using Divinycell foam.

Once foam is in place,(epoxy & micro-balloon putty), then 2-3 layers
of DB240, (24OZ double bias,knitted glass), and laminating epoxy.

My guess is that material costs will be about $10K without further
cost increases which are on the horizon.

Think I would look long and hard at taking a chain saw to the boat and
look at something else.

$10K should get a pretty decent used boat these days.

Lew