SailNet Community - Reply to Topic

   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 > Gear & Maintenance > Epoxy Resin and Mat Fiberglass
 Not a Member? 


Thread: Epoxy Resin and Mat Fiberglass Reply to Thread
Title:
  

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

Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

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.



Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Topic Review (Newest First)
12-22-2006 07:16 PM
C27Shockwave Check out the System3 website. They have a free book you can download. And free advice via e-mail. Their products are excellent. If you need strength, use fiberglass cloth. It lays out nice and takes the epoxy well. It may be a little more expensive but, you'll have no regrets.
Bateau2.com and BoatBuildersCentral.com are a couple of boat building sites that have some valuable info too.

Tom
12-22-2006 04:51 PM
sailingdog Actually, the binder used in a lot of the fiberglass mat products is not compatible with epoxy. In many cases, it is specifically formulated to work with polyester/vinylester resins. Fiberglass cloth is much stronger and the longer fibers in it tend to lead to a much stronger repair.
12-22-2006 11:20 AM
feetup
epoxy 'n' mat

The binder referred to is sprayed on to the mat in manufacture to hold the loose strands together. It is a styrene and is disolved by the polyester just like a styrofoam cup, allowing the fibers to splay and move independently. In the same way that you can lay-up over styrofoam using epoxy the mat will not achieve it's wet dishcloth state if the binder is not desolved.
If you are concerned about the added strength, flexability and adhesive qualities of epoxy you might think of using a vinylester resin which falls somwhere in between epoxy and polyester in most catagories and I believe has no issue with the soluability of the styrene binder.

Cheers, Feetup
12-22-2006 11:10 AM
hellosailor "West system has free literature that is quite good on the subject; "
And they're great about answering questions on the phone. You pay for the call, they'll tell you anything you want to know about FRP including specifics for your job. Can't beat that.
12-22-2006 07:07 AM
Tartan34C
Epoxy and mat

The binder for some types of mat may not be soluble in epoxy so it’s hard to wet mat out if you use epoxy. If you want to use mat make sure you buy suitable mat and that may be the only problem with using mat and epoxy. In the past you couldn’t buy mat that had such a binder so it got a bad reputation with epoxy but I have been told that this is no longer true. The only time I tried mat with epoxy I found this wet out problem to be true but that was years ago and I have only used polyester with mat since then. So I don’t know first hand if suitable mat is available.

Mat is used to add bulk or act as a tie between layers of something else. Mat is easy to sand and makes a great finish layer. Roving and cloth are stronger but don’t bond well to themselves or each other so mat is also great between layers. I use polyester resin for repair work on boats and it's fine. Epoxy has higher peal strength but you don’t need that with a repair so way add the extra expense and complication by using epoxy?
Good luck with the repair,
Robert Gainer
12-22-2006 02:13 AM
sailaway21 Casey advocates that from a strength standpoint. It has nothing to do with the epoxy resin being used. Mat has littlr strength but is easily shaped (faired). Rove on rove is weak without mat in between. Cloth with mat gives you strength, flexibility in application, and shaping ability. Much depends on the size of repair, with cloth being the easiest and strongest to work with on small areas. West system has free literature that is quite good on the subject; between them and Casey you'll not go too far wrong.
12-22-2006 01:34 AM
morganbill
Epoxy Resin and Mat Fiberglass

I have a small fiberglass repair to make and while reading Dan Casey's book discovered that he discourages the use of epoxy resin (West System) and mat fiberglass. He recommends using fiberglass cloth (10 oz.) Looking for a confirmation as I inteded to use a layer of mat, roving and mat with West System 105.

 
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


All times are GMT -4. The time now is 03:27 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.