Old Airex Core - SailNet Community

   Search Sailnet:

 forums  store  

Quick Menu
Boat Reviews  
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Hatches and Portlights
Interior And Galley
Marine Electronics
Other Items
Plumbing and Pumps
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here

Go Back   SailNet Community > On Board > Boat Review and Purchase Forum > Sailboat Design and Construction
 Not a Member? 

LinkBack Thread Tools
Old 12-16-2008
Junior Member
Join Date: Nov 2008
Location: Waldorf, MD USA
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
SteveT44 is on a distinguished road
Old Airex Core

I'm going to have an initial look at a custom amateur one-off that was launched in 67. The current owner states that the hull is Airex cored with a ply cored deck. It's my thinking that the hull was probably built over a wood and batten plug in which the Airex was applied to that then the outer glass would have been applied to the foam wetting out with hand rollers. The inside would have been glassed similar once the hull was turned over. It's my thought that hand wetting-out of the glass to the foam would have established a fairly complete bond.

I was wondering if anyone could possibly comment on the quality of Airex and resin that the typical home builder would have had access to in the mid 60's? Also, if anyone could comment on the longevity of the resin/Airex bond after 40 years? The boat is Canadian built, one of the eastern provinces I think.

BTW, this is my first post on SailNet, hello everybody!

Reply With Quote Quick reply to this message Share with Facebook
Old 12-16-2008
sailingdog's Avatar
Telstar 28
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Welcome to Sailnet, Steve.

Airex was a pretty common foam core material for boats, and several production manufacturers used it. It is still in use today and is still one of the preferred foams, especially for the hulls of multihulls. CE Ryder used it in the Southern Cross series of boats, among others.

Bonding the foam to the glass skins is a bit of a problem in foam-core construction, since the foam doesn't wick resin up like end-grain balsa generally does. Usually a thickened paste or putty is used to help bind the foam to the glass laminate skin.

As for the quality of the airex and resin, it would really depend on the person doing the building... they could have gotten materials from any number of sources, some of which would be as good, if not better, than what production builders were using, and some of which were far less suitable. It is hard to say one way or another. The fact that the boat is 41 years old, and still floating says a good deal about it though IMHO.

I'd highly recommend you read the POST in my signature to help you get the most out of your time here. It has tips on searching sailnet, writing a good post, etc.. I'd also recommend you read the Boat Inspection Trip Tips thread I started.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Reply With Quote Quick reply to this message Share with Facebook

Quick Reply

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Similar Threads
Thread Thread Starter Forum Replies Last Post
airex core hull mrkeith Gear & Maintenance 10 01-10-2007 08:08 AM
creating a loop in braided core line Sloop23_417 Gear & Maintenance 1 08-28-2001 09:34 AM

All times are GMT -4. The time now is 01:35 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.