Thread subject: Whaler Central - Boston Whaler Boat Information and Photos :: Epoxy Barrier Coat

Posted by Expo2 on 04/24/07 - 7:12 AM
#1

I am at a point in the restration of my 13' where I can apply an epoxy barrier coat on the exterior hull. I have purchased a tie coat primer and am concerned this will not provided a sufficient substrate for follow on paint coats. Is it advisable to apply an epoxy barrier coat then the tie coat primer? Any advise is greatly appriciated.
Mahalo!

Posted by Mike on 04/24/07 - 6:24 PM
#2

What point are you at? How extensive is your restoration?

I don't know what barrier coat is. I assume it goes immediately on top of fiberglass.

Posted by appdiver on 04/25/07 - 6:55 AM
#3

You don't know what a barrier coat is...?!?

Posted by litespeed on 04/25/07 - 7:10 AM
#4

What exactly are you trying to do? The Interlux site has lots of info. pertaining specifically to this.

Are you painting the bottom or the entire boat?

When I painted my bottom years ago I removed the old bottom paint down to the gel coat and then installed an epoxy barrier coat (Interlux InterProtect). This seals the bottom and prevents water intrusion. Then I laid on 2 coats of bottom paint after roughing up the epoxy.

Edited by litespeed on 04/25/07 - 7:11 AM

Posted by Mike on 04/25/07 - 7:30 AM
#5

appdiver,

I guess I should have said "I don't know what an EPOXY barrier coat is".

For that matter I guess I'm not sure what a barrier coat is at all.

It appears you do, so why don't you enlighten me - if you would.

Posted by Expo2 on 04/25/07 - 10:05 AM
#6

Mike,
Sorry for the confusion. I have removed paint, fixed holes and have sanded the entire exterior hull of my 13'. An "epoxy barrier coat" application is using epoxy resin and hardner like paint to form a new surface, bonded to the gelcoat. Like a new skin. This surface, if it is applied correctly, will seal blemishes and offer a 8-10 mil smooth coating. Then you can put on a an epoxy based paint. I was inquiring wether if this is overkill for a Whaler due to its inherent quality of construction or if this should be avoided. If you "google" epoxy barrier coat there is an extensive article on this application. I hope this clears it up. I have also pretty much answered my own question through explaining it. The bottom will get the treatment.
Jim

Posted by Mike on 04/25/07 - 11:17 AM
#7

Jim,

No need for appologies. Your description puts epoxy barrier coat in a proper perspective for me.

I was just replying to appdiver's pointless question.

Thanks for the info.

Mike

Posted by appdiver on 04/26/07 - 8:51 AM
#8

It would be a "pointless" comment only if you didn't have "Super Administrator" in your profile...are you a Whaler guru?

Posted by Mike on 04/26/07 - 9:13 AM
#9

Appdiver - some would simply point you to a dictionary for the definition of administrator. I'll go a little further.

The titles "Super Administrator", "Admin", "Member" are all assignations packaged with the cms (content management system) we use to provide this site. The titles in essence describe the privileges any particular user of this webite can exercise.

Super Administrator - Reserved for Joe and me - allows all privileges for administering the site.

Admin - Reserved for Jeff and Tom - allows privileges for administering their portions of the site.

Member - Allows access for viewing and contributing.

I am a "Super Administrator" on this site because that is what the default name is for the level of privilege and because I have chosen not to change it.

You are a member because, and only because, this site openly accepts members without and qualification of their intent or their character.

Now you are called a member. Does that mean you are contributing participant to this site? Certainly not. Just a miscreant.


Posted by Joe Kriz on 04/26/07 - 2:25 PM
#10

appdiver,

What you are looking at is not really part of the individuals profile.
As Mike says, it is assigned by the software and is something that none of us can change in our profile.

Apparently you do not like the word "Super Administrator" that states their administration rights.

So, I have changed this in the software code to read "Site Administrator".
If anyone has problems with this or the other descriptions, please speak up now...

1. Site Administrator
2. Administrator
3. Member

Again, no individual can change this in the site status section and it is not really part of the profile.
The profile starts with and after:
Avatar
1. Posts:
2. Location:
3. Joiined:
4. Status: Offline or Online


Posted by John Fyke on 04/26/07 - 6:26 PM
#11

Expo2 that sounds like a good idea except it might be very hard to sand. I used an epoxy primer on my Grady White and plan on using it on my 1966 13' also. I used one coat over 40 grit scratch and got some serious film build, had to use a polyester spray gun to shoot it. Sanded it with 220 grit and top coated.

John

Posted by litespeed on 04/26/07 - 7:23 PM
#12

Expo2 wrote:
Mike,
Sorry for the confusion. I have removed paint, fixed holes and have sanded the entire exterior hull of my 13'. An "epoxy barrier coat" application is using epoxy resin and hardner like paint to form a new surface, bonded to the gelcoat. Like a new skin. This surface, if it is applied correctly, will seal blemishes and offer a 8-10 mil smooth coating. Then you can put on a an epoxy based paint. I was inquiring wether if this is overkill for a Whaler due to its inherent quality of construction or if this should be avoided. If you "google" epoxy barrier coat there is an extensive article on this application. I hope this clears it up. I have also pretty much answered my own question through explaining it. The bottom will get the treatment.
Jim


Mike,

I would definitely do the "epoxy barrier coat". There are many flaws in the 13' hull and the epoxy will help avoid future problems. I spent $$$$ last year on a top notch paint job and am now experiencing problems because I "trusted the design". The bottom of the 13 should be treated like "tin foil" in the thought process of protection. Especially if you USE the boat. I'm amazed after my restoration how much damage my boats bottom has received. My boat is launched or is in the water at least 3 to 4 days a week. All of this launching and "time in the water" makes these flaws VERY obvious.

Your ideas for protection are in the right direction. Stick with them!!

AJ

Posted by Expo2 on 04/27/07 - 4:06 AM
#13

Lite, Protek,
Thanks for the positive reinforcement. It's always good to here, one way or another, opinions from those who can offer advice from experience.

Mike and Joe:
Thank you for all you do with this site. Your time and efforts are invaluable.

Appdiver:
Thank you. Now we all know more about website administration AND epoxy barrier coats!