Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 07-05-2015, 22:10   #1
Registered User

Join Date: May 2011
Location: Mandurah, Western Australia
Boat: Roberts 57 Staysail Schooner
Posts: 79
Question Glassed kauri hull

Planning our big get away and am currently in the stage of starting to seriously look at the boats on the market.

One in particular has caught my eye, but I'm a little unsure about the construction material which is glassed three skin New Zealand kauri. I haven't actually seen the boat in the flesh and will be getting a reputable surveyor to check anything I consider, but it doesn't hurt to be informed.

I've read several times to give wooden boats a wide berth when selecting something for world cruising, but how about glassed wood? How about glassed kauri? Isn't this wood supposed to be almost immune to rot even before glassing?


pwillems is offline   Reply With Quote
Old 07-05-2015, 23:26   #2
Registered User

Join Date: Jun 2014
Location: Up the mast, looking for clean wind.
Boat: Currently Shopping, & Heavily in LUST!
Posts: 5,629
Re: Glassed kauri hull

Kauri is great stuff, & for the most part only available in New Zealand. Where for every 3rd house, someone's also built a (or several) fair sized boats.
More seriously though, do some reading both on; cold molding, & strip planking. Both of which usually involve laying some (or a lot) of glass, overtop of the wood, when building the boat.

Either way, when done with attention to detail, they're building methods which are equal to or better than most glass boats. And in the S. Hemisphere, account for a large percentage of the cruising, & racer/cruisers built. Ditto on a good number of the custom boats built, regardless of location.

There are some good pics of a custom, Kauri, & Carbon Fiber work done in a boat's construction here 1980 Davidson Custom Sloop Sail Boat For Sale -
She's surely one I'd be glad to own, but the wallet said no, before she sold. Which took VERY little time.

Another indication of what builders think of strip planking, & cold molding, is that a LOT of the wildly fast, & well thought of boats coming out of Santa Cruz, are/were built using these methods, or variations there of.
AKA, the early "Sleds" (of all sizes), & ULDB's. As that area & build type, is where, & how the concept came into being.

If you go to the WEST System site, you can download the (free) classic book, On Boat Construction and it has lots of info on the build methods described above. And written in a way that's easy for anyone to grasp & learn from. Expert to newby.

PS: It's easy enough to Google Kauri, & learn all that you need to about it.


The Uncommon Thing, The Hard Thing, The Important Thing (in Life): Making Promises to Yourself, And Keeping Them.
UNCIVILIZED is offline   Reply With Quote
Old 08-05-2015, 03:08   #3
Registered User
Kestrahl's Avatar

Join Date: Jun 2012
Location: Malaysia
Boat: Laurie Davidson 35
Posts: 271
Re: Glassed kauri hull

A lot of NZ boats were build of double or triple diagonal kauri, glassed over. Its normally Epoxy skin so no Osmosis and is considered just as strong and durable as solid glass, if not more so. What you do have to check carefully is the plywood decks.

We had friends who were trying to sell their Farr 44 which was kauri construction in the Med, no interest. They sailed it back to NZ, sold straight away.
Kestrahl is offline   Reply With Quote
Old 08-05-2015, 04:49   #4
Registered User
Sand crab's Avatar

Join Date: Oct 2010
Location: Gig Harbor, WA
Boat: 34' Crowther tri sold 16' Kayak now
Posts: 3,159
Re: Glassed kauri hull

There's wood cored boats and then there's wood boats. Many modern production fibergass boats have a wood core which is typically balsa. In North America and Europe you will see one off fiberglass cedar cored boats built by professionals and home builders. These are known to be strong and light. Kauri is a conifer also and is the southern hemisphere's version of cedar so that's what they use downunder.

The wood boats people are cautioning you about are the old style solid wood boats. There are several types of construction for these but generally they are designed so the wood will absorb water and swell which tightens up the seams and seals it. If you take the boat out of the water for awhile then the wood will dry out and shrink and when you put it back in there will be some leakage until the seams tighten up again. The downside is the rot, worms and termites that can get in there. These boats will not have a glass layer although some were retro fitted with glass after the fact which is not generally accepted practice today.
We don't need no stinking badges.
Sand crab is offline   Reply With Quote
Old 08-05-2015, 06:57   #5
Registered User
Kestrahl's Avatar

Join Date: Jun 2012
Location: Malaysia
Boat: Laurie Davidson 35
Posts: 271
Re: Glassed kauri hull

Not exactly. You will find many Cedar sandwich boats in NZ, but are more of the racer/cruiser variety and are generally boats from the 90's and yard or home built. Kauri boats are not a sandwich construction, they are double or triple diagonal and generally glassed on the outside but not always, and are not glassed on the inside. The construction method was used by boat yards as an alternative to solid fiberglass construction in the 80's.
Kestrahl is offline   Reply With Quote


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale or Trade: 1952 Classic Kauri Wood Schooner - Ceceline Cecel Classifieds Archive 20 03-06-2012 14:15
Glassed Hull To Deck Joint...No Bolts? david7 Monohull Sailboats 8 09-03-2012 12:22
Kauri Schooner 1955 'Ceceline' MaizieDerrick Meets & Greets 8 16-06-2010 19:48
Kauri Yacht Maintenance david francis Construction, Maintenance & Refit 6 07-09-2008 18:52
thruhulls glassed over, how do i fix that? exranger Construction, Maintenance & Refit 12 17-03-2006 22:21

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 00:51.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.