Hull moisture - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






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


Reply
 
LinkBack Thread Tools
  #1  
Old 05-20-2001
Junior Member
 
Join Date: Dec 2000
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
MIKEHARTMN is on a distinguished road
Hull moisture

I am in the process of buying a 1985 Hunter 28.5. Yesterday, the boat surveyor detected high moisture readings throughout the exterior of the bottom - except for a small section of the bow and stern areas.

The owner has disputed these findings, claiming that moisture readings are unreliable. The owner has since produced an "expert" to state that the moisture reading is suspect. The boat has been out of the water for the winter, and our spring season has been unusually dry. The moisture readings were done on a dry sunny day.

The surveyor says the moisture reading was fine, demonstrated the device to us where moisture was low on the sides of the boat, and then quickly shot up to pin the needle as it moved from sides to bottom. He both dragged the device across the hull, and placed it in various spots along the hull, and the needle was usually either pinned or nearly pinned. The surveyor says this boat is a ticking time bomb and I should walk away.

The surveyor examined another boat for me earlier in the year and the hull of that boat did not have this high moisture issue (that boat had a dying motor instead)

I am quite frustrated by all this as this is my 3rd try at buying a boat after a 6 month shopping odessy. I want to be sure that I am walking away for the right reason. I can''t take the owners word that all is well and my surveyor is nuts.

Any opinions.....?

Thanks

Mike
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 05-20-2001
Jeff_H's Avatar
Moderator
 
Join Date: Feb 2000
Location: Annapolis, Md
Posts: 6,664
Thanks: 5
Thanked 103 Times in 79 Posts
Rep Power: 10
Jeff_H has a spectacular aura about Jeff_H has a spectacular aura about Jeff_H has a spectacular aura about
Hull moisture

This is a pretty complicated situation that you are describing. A non- cored boat, like the Hunter in question, that has been out of the water for the winter, and which has been in a dry climate should not show a high moisture. Over the course of the winter the boat should be able to dry out on its own to the point that low meter readings would be expected even in a boat with water absorbsion problems. So I can understand why a seller would be skeptical.

On the other hand, you have hired a surveyor that you have trust in. He moved his instrument around the hull and demonstrated both high and low repeatable readings depending where he was on the hull. This suggests that his moisture meter is working and that your surveyor knows how to use it.

I would have to say depend on yoru surveyor. He is working for you.

BUT if you have any serious question about the findings, get a second opinion from another surveyor. Get recommendations from people in the local repair business as to who they think is a knowledgeable surveyor and ask that person to come out and take new readings. It should not be all that expensive to get just moisture readings on a 28 foot boat.

The other peice of this puzzle is where this moisture is coming from. I would also ask your surveyor where he thinks this moisture is coming from.

Good luck
Jeff

Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 05-20-2001
Senior Member
 
Join Date: Jul 2000
Posts: 193
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 15
rbh1515 is on a distinguished road
Hull moisture

My advise:
Walk away. There are alot of other boats out there. If the surveyor sees a problem such as you are describing I would be very hesitant to buy the boat.
One comment though on these moisture readings. I read an article about a year ago on this topic and there are no moisture readers that are "calibrated" for fiberglass." They were never even intended to be used in fiberglass, but as far as detecting moisture in fiberglass boats this is the only "noninvasive" technique available. I think that different brands can give very different readings. The only 100% reliable techinque is actually getting a core of the area in question--a little hard in this case since my understanding is that it is most of the hull under the waterline. This is something the owner may want to do, since if you don''t buy the boat other surveyors will probably find the same potential problem and he is going to have a problem selling the boat.
I''m pretty sure the article on moisture detection in fiberglass boats was in one of BoatUS''s magazines they send out--you can always contact them and see if they had an article on this: www.boatus.com (they are an insurance company) Its an interesting topic.
Good luck
Rob ~~~~_/)~~~~
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 05-21-2001
Junior Member
 
Join Date: Dec 2000
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
MIKEHARTMN is on a distinguished road
Hull moisture

This has turned into quite an educational experience. The owner agreed to let us remove the bottom paint in 6 areas of the bottom which showed the highest moisture readings. With the paint removed, the moisture read was within normal range. Put the meter on the paint, and the needle pins. Put the meter on the exposed bottom gelcoat, and the meter shows 2% moisture - well within tolerance. Apparently, there is something in the bottom paint the is causing a false reading. This was done at the suggestion of a 2nd surveyor. The 2nd opinion idea was a good one. Everything seems ok.

Thanks for the feedback.

Mike
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 05-25-2001
paulk's Avatar
Senior Member
 
Join Date: Jun 2000
Location: CT/ Long Island Sound
Posts: 2,554
Thanks: 4
Thanked 23 Times in 22 Posts
Rep Power: 15
paulk is on a distinguished road
Hull moisture

Same thing essentially happened to us. First surveyor said to drop it like a hot potato, second came in and placed meter on the gelcoat INSIDE, where there was no paint, and it showed no moisture. We questioned the first surveyor''s call because he also said that he could find no delamination anywhere. If the cored hull on our boat had been as wet as he said, winter freezes should have torn the laminates apart all over. Of course we let the seller know how very concerned we were about the high moisture readings...
There are also stories out there about boats dropping in price by $10,000 or more because of ''blisters'' all over the bottom when they get hauled for survey. The blisters turn out to be in the paint, but not in the gelcoat... Caveat emptor & Carpe diem!
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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
Wide Transoms...A Discussion Thereon. (was Jeff-H) windship General Discussion (sailing related) 28 05-24-2010 03:22 AM
Glassing hull GreenEarth General Discussion (sailing related) 18 06-20-2009 12:52 AM
High Tech vs traditional-Comments? Pangaea General Discussion (sailing related) 38 08-07-2007 02:07 AM
Hull speed and wide sterns Jeff_H Boat Review and Purchase Forum 24 11-22-2006 12:58 AM
hull construction cgha33 Boat Review and Purchase Forum 4 05-23-2003 08:11 PM


All times are GMT -4. The time now is 02:17 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, 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.