off brand epoxy barrier paint ...

[ALX357]

off brand epoxy barrier paint ...

There is a local paint manufacturing and mixing company that is offering an epoxy barrier paint, in gray or white, that is a two-part 50/50 mix, which they sell mostly for swimming pool liners, especially fiberglass gelcoated liners. Their price is about 75 dollars for a two gallon kit. THey say it is an effective barrier coating.

Interlux Interprotect 2000E barrier paint is priced 100 dollars / gallon at WM. I estimate 4 gallons required to get the 10mil thickness recommended by Interlux. SO that is 400 dollars, compared to about 150, for a paint that may or may not be equivalent.

Seems to me that the purpose is very similar, resist lots of water pressure against polyester gel-coated fiberglass / resin.

I cannot say anything about the off brand paint, (Warren Paint Company ) but I am sure that much of the West Marine pricing on Interprotect 2000E consists of the WM well-documented agressive markup, transportation, and the brand name premium. I also was put off by the claim of Interlux that their barrier coat has "micro-platelets" which work just like "roof shingles" to hold out water. They even had a hokey drawing of overlapping roof shingles. Just a ridiculous analogy for a product aimed at professional use, or for professional results.

Anyway, there is of course some question in my mind still as to whether the Warren Paint epoxy barrier would be as good as the big brand name, but also It is possible they are effectvely the same, in chemistry and mix.
Any other opinions out there ....

[Kelly Hanson East]

The cost is all labour on a bottom paint job. It cant make sense to be a guinea pig on new product and risk 3x cost (remember if it doesnt pan out, you have to remove the old stuff too!!

[SkiDeep2001]

ALX357, If you do wind up buying WM's product, read this post I made back in June. http://www.macgregorsailors.com/forum/v ... =9&t=13607 You might be able to save some money. And remember, in many things you get what you pay for. Rob

[Retcoastie]

Ask Warren. Tell them what you are planning and what the competition is. See what they say about the chemistry, serviceability, and longevity. Then decide. They know more about their paint than we do.

[johnnyonspot]

If the main worry is getting the stuff off if you don't like it, then why not try it on a patch of the boat and if it looks good do the rest? If you don't like it, maybe you can bring it back for a refund.

[ALX357]

Thanks for the replies ... a few things I know or have learned .... Warren Paint representative guy does not know about blisters or blister prevention. Apparently the swimming pool industry does not suffer from this malady, on their gel-coated fiberglass applications. Maybe the use of this epoxy on all pools that need it is why.
I have usually operated under the assumption that you get what you pay for, but then again, we got MacGregors, .... right ??
I also buy generic or house brand replacements for brand name drugs, foods and vitamins when I can. I also will use hardware store stainless steel in most cases if the item is similar. But not running rigging.
SO I am aware of the potential problems if the paint is not truly barrier quality. As for believing in the quality superiority of the Interlux, I am not convinced it is much different at this point. That BS about the micro-platelets does more damage than good to their credibility. If they are using that kind of hype then maybe their product is really no different than any generic. I don't much care how it looks, as it is mostly under the boat. I would use the gray for the topcoat, either brand, I think, because it would show less discoloration.

[Terry]

off brand epoxy barrier paint ...

Interlux Interprotect 2000E barrier paint its are 100 dollars / gallon at WM. SO that is 400 dollars, compared to about 150, for a paint that may or may not be equivalent. I estimate 4 gallons required to get the 10mil thickness recommended by Interlux.

Any other opinions out there ....

Well 10 mil sounds like 10 millimeters which is one centimeter and one centimetr is just shy of 1/2 inch. 2.2 centimeters = one inch. I can't imagine putting barrier coat on that thick. I only used two gallons to do mine and I got four heavy coats on, plenty thick for my liking. I doubt you need to have barrier coat that thick. I also got about 3 coats of antifouling from one gallon on my 26M.

[Kelly Hanson East]

10 mil probably means 10 one thousandths of an inch, or about 0.25mm

[ALX357]

How many coats would it take to make it a half-inch thick ? 50 ? that's going to be real expensive .... Probably should not do that to the centerboard.

[MSN-Travelers]

... I don't much care how it looks, as it is mostly under the boat. I would use the gray for the topcoat, either brand, I think, because it would show less discoloration.

Most people put on barrier paint to prevent blistering when we leave our boats in the water (slip/mooring) and then mother nature tries to grow "stuff" on the hull. Just curious why you are putting on a barrier paint and not putting on an anti-fouling?

As a side note, I just did the barrier/anti-fouling paint routine this year. I needed 2 one-gallon kits to get four coats of barrier and one gallon of anti-fouling to get two coats (with a little less than a quart left).

Paul

[ALX357]

No objection to anti-fouling paint, but I priced them, ... ' higher than the epoxies, so I could just omit that for now, and manually remove the growth, periodically. Scum and slimes can be scrubbed off with nylon brush, without harming the bottom, while boat is floating in a three-foot-deep area of the lake, just scoot around in the zero gravity and scrub it off. Main concern is to protect the hull from degradation and further blistering.

[c130king]

I have a thick "barrier coat" of some sort of epoxy...but I have no anti-fouling paint. That is the way it came from the PO. The couple of times I have left it in the water for a few weeks it had some growth but it comes clean.

I normally don't leave it in the water for long periods of time (over a week or so). Anti fouling paint is on the "future" projects list.

Jim