Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 27-10-2010, 10:50   #1
Registered User
PatrickS's Avatar

Join Date: Jan 2009
Location: Espoo, Finland
Boat: "Tranquil" - '79 Westerly Berwick Ketch
Posts: 62
Beadboard for Hull Insulation?

I'm about to insulate my boat throughout and was going to use extruded foam (XEPS) but have a source of essentially free 1/2 inch beadboard (MEPS) that I'd prefer to use to save on expenses.

I've read, though, that the bonding agent in beadboard can absorb water over time and am wondering (a) how big a risk that really is in this particular application, and (b) whether that was a problem with earlier formulations but not with the current stuff.

I anyway intend to paint over the insulation with a water based latex in most areas, and am thinking that between the contact cement on the hull side and the paint on the other side, that may serve to sufficiently minimize any absorption that otherwise might occur.

If a man speaks at sea where there is no woman to hear, is he still wrong?
PatrickS is offline   Reply With Quote
Old 27-10-2010, 11:35   #2
Senior Cruiser
osirissail's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: A real life Zombie from FL
Boat: Gulfstar 53 - Osiris
Posts: 5,416
Images: 2
If you are talking about the white foam insulation boards that when broken into pieces little white balls/beads fly everywhere - - DO NOT use that stuff.
It is porous and water, algae, and all sorts of mold works it way into the foam board and you will end up having to remove it all and sterilize the boat.
- - Only closed cell polyurethane - blue board or now pink board can be used for hull insulation. From a technical description of the proper insulation boards: "Polyurethane and polyisocyanurate are both closed-cell foams that contain a low-conductivity gas in the cells (usually one of the HCFC or CFC gases.) The high thermal resistance of the gas gives these foams an R-value of between R-7 and R-8 per inch."
- - The panels with the aluminum foil (shiny) are even better but bend less than the blue/pink boards.
Attached Images
osirissail 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
Insulation rourkeh Plumbing Systems and Fixtures 3 12-10-2010 16:27
Freezer Insulation ? gbanker Plumbing Systems and Fixtures 8 20-05-2010 19:42
Insulation... Himself Construction, Maintenance & Refit 1 14-11-2009 17:42
Hull Insulation SkiprJohn Construction, Maintenance & Refit 12 21-10-2009 12:00
insulation Hankthelank Monohull Sailboats 25 30-01-2009 15:54

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:15.

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.