|
|
18-08-2020, 17:49
|
#1
|
Registered User
Join Date: Aug 2015
Location: Jacksonville, FL
Boat: Pearson 367
Posts: 550
|
How many barrier coats?
Hi all, my boat is on the hard for osmosis treatment. The hull was sandblasted to bare fiberglass. The quote from the yard was for two coats of interlux 2000e. Talking with a couple people who have been through the same they went with 4-5 coats.
I did a barrier coat search here and most threads were more about life expectancy, so how many coats?
Thanks
|
|
|
18-08-2020, 18:18
|
#2
|
Registered User
Join Date: Oct 2019
Location: Kennebunk ME
Boat: Owner built 60’ Aluminum Expedition Yacht.
Posts: 1,854
|
Re: How many barrier coats?
I worked for Pearson but I cannot recall the exact layup schedule. You have removed Gel Coat so it’s not like you are applying epoxy over Gel Coat or aluminum. It’s a lot easier now than in the future. I used a lot of barrier coats of two colors to protect my marine aluminum hull and it worked very well.
Can’t wait till some performance sailor squeaks about added weight.
Your boat, your hull. Just curious, what did the yard suggest.
Happy trails to you.
Mark, an epoxy covered manatee
|
|
|
18-08-2020, 18:54
|
#3
|
Registered User
Join Date: Nov 2016
Location: Sarnia ON
Boat: S2 9.1
Posts: 265
|
Re: How many barrier coats?
I believe that Interlux recommends 5 coats, that is what most people I know apply.
They also recommend using white and grey and altering the colour with each coat so that you can see the amount that you are putting on.
You can do that but my experience is that the grey 2000 seemed much superior to the white, I would only use the grey myself.
Good luck
|
|
|
18-08-2020, 20:40
|
#4
|
Registered User
Join Date: Dec 2008
Location: Noank, Ct. USA
Boat: Cape Dory 31
Posts: 3,172
|
Re: How many barrier coats?
Quote:
Originally Posted by LLCoolDave
Hi all, my boat is on the hard for osmosis treatment. The hull was sandblasted to bare fiberglass. The quote from the yard was for two coats of interlux 2000e. Talking with a couple people who have been through the same they went with 4-5 coats.
I did a barrier coat search here and most threads were more about life expectancy, so how many coats?
Thanks
|
Follow the manufacturers recommendations. Your yard apparently can’t be bothered to do so. I applied five coats of the grey. If you are going to do it...do it right. If you are going to pay someone to do it...demand that they apply the product per the manufacturers recommendations.
|
|
|
19-08-2020, 06:06
|
#5
|
Registered User
Join Date: Oct 2012
Location: Allegan, Mi
Boat: 1968 Columbia 50
Posts: 615
|
Re: How many barrier coats?
I had my hull soda blasted, down to bare glass, as the gel had been peeled a long time ago. I would suggest at least 5 coats, to get the correct recommended thickness. I had a couple of buddies (3)help me, and in one day we put on 4 coats in one day with 9" rollers, with 1/4" knap. We used deck stain rollers from our local Ace Hardware, which held up just fine with no problems. The second day we applied one last coat, and "hot-coated' the barrier coat to the last barrier coat before it dried completely. This was on a 50' boat, so your "buddy need" might be smaller.
__________________
Fair winds from the crew of the S/V Siren.
|
|
|
19-08-2020, 06:13
|
#6
|
Registered User
Join Date: Nov 2007
Boat: TRT 1200
Posts: 7,271
|
Re: How many barrier coats?
Maybe your yard made a mistake and quoted the Interlux 2000 rather than the Petite Protect which is recommended at 2 coats?
http://www.pettitpaint.com/products/...ettit-protect/
|
|
|
19-08-2020, 07:51
|
#7
|
Registered User
Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 20,437
|
Re: How many barrier coats?
I have seen between 5 and 8 coats applied.
2 coats sounds like a low number then.
b.
|
|
|
19-08-2020, 07:54
|
#8
|
Registered User
Join Date: Feb 2019
Posts: 166
|
Re: How many barrier coats?
We used Pettit with great results but regardless of product it needs to go on per manufactures recommendations. We applied additional coats (2) b/c we sanded to a smooth finish prior to antifowling while leaving enough product to meet the “min required dry film thickness”. smooth bottoms are easier to clean and IMO have less growth - it was a ton of effort but absolutely worth it.
|
|
|
19-08-2020, 08:25
|
#9
|
Registered User
Join Date: Jun 2009
Location: Annapolis, MD
Boat: Gozzard, 44CC, 50'
Posts: 554
|
Re: How many barrier coats?
The problem with the Interlux 2000 is that after about 6 - 8 years it fails. When it does it begins to trap moisture in the hull and promotes blistering. I had my boat Interluxed at the factory and it failed necessitating a major peel and layup. Sherwin Williams 2 part epoxy was then applied. That was in 2009 and the hull is still dry! JMHO
|
|
|
19-08-2020, 09:07
|
#10
|
Registered User
Join Date: Sep 2008
Location: Fiddlehead Marina, Olympia, Washington
Boat: 82' Catalina 30 Mark 1
Posts: 60
|
Re: How many barrier coats?
I put 4 coats of the Total Boat (white) barrier paint on. It was a marathon cause each coat went on after the previous coat had tacked up to the point you could leave a finger print.
The first coat of bottom paint went on the same way.
Got this paint thru Jamestown Distributor in Bristol, RI. Great guys and good help.
Darrel
Currently headed south in Puget Sound, Washington State....
S/V Whisper, 30' Catalina, #2601
Olympia, Wa
|
|
|
19-08-2020, 09:40
|
#11
|
Registered User
Join Date: Jul 2016
Location: Atlantic Highlands, NJ
Boat: Swallowed the anchor
Posts: 979
|
Re: How many barrier coats?
Two coats of 100% solids epoxy would be fine. The fact that Interprotect 2000 is approximately 60% solids is why so many coats are recommended. If you use Interprotect do 5 coats but that seems foolish to me when better materials are readily available.
|
|
|
19-08-2020, 09:50
|
#12
|
Registered User
Join Date: Feb 2013
Location: Oregon
Boat: Seafarer36c
Posts: 5,563
|
Re: How many barrier coats?
How many gallons of paint can you afford in Guatemala? They might be trying to save you some dough. You are probably going to spend $475gal on Trinidad too.
It would be a real shame to not protect the really nice sand blast job they do at RAM Marina. I've never seen better.
|
|
|
19-08-2020, 11:30
|
#13
|
Registered User
Join Date: Aug 2015
Location: Jacksonville, FL
Boat: Pearson 367
Posts: 550
|
Re: How many barrier coats?
Quote:
Originally Posted by Ecos
How many gallons of paint can you afford in Guatemala? They might be trying to save you some dough. You are probably going to spend $475gal on Trinidad too.
It would be a real shame to not protect the really nice sand blast job they do at RAM Marina. I've never seen better.
|
$150 a gallon for interlux. $350 a gallon for petit Trinidad pro. Which isn't too bad. Just a touch above west marine prices I think.
|
|
|
19-08-2020, 12:12
|
#14
|
Registered User
Join Date: Jun 2017
Posts: 85
|
Re: How many barrier coats?
Before dissing the yard, I’d recommend you check to see what specific barrier cost product is being apppied. Pettit has a new product on the market and the manufacturers recommendation is only 2 coats as opposed to their previous product.
|
|
|
19-08-2020, 12:29
|
#15
|
Registered User
Join Date: Aug 2015
Location: Jacksonville, FL
Boat: Pearson 367
Posts: 550
|
Re: How many barrier coats?
Quote:
Originally Posted by vanderd
Before dissing the yard, I’d recommend you check to see what specific barrier cost product is being apppied. Pettit has a new product on the market and the manufacturers recommendation is only 2 coats as opposed to their previous product.
|
I checked and they quoted two coats of interlux 2000e. I'll look at other products. Im leaving the hull bare for a couple months to dry so I've got time to have product shipped if I want.
|
|
|
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Rate This Thread |
Linear Mode
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
Advertise Here
Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
Vendor Spotlight |
|
|
|
|
|