Need Bottom Advice

Joe · Oct 4, 2009

Ablative paint, if the boat's going to be out of the water alot. Read the westmarine advisor.

higgs · Oct 4, 2009

I think your best bet is to see what others, who keep their boat in the same lake, are using and go with that. Others here would know better about the salt water, but I don't think 3 weeks with the wrong paint is not going to be a problem. For one thing, if you are on holiday at the ocean for 3 weeks, it is likely your boat is going to get used a lot, which will help keep growth at a minimum.

Maine Sail · Oct 4, 2009

Otis Driftwood said:
What's the right combination for my boat, what primer, what paint

-just repaired many blister's
-usually on trailer
-may be in saltwater up to three weeks at a time
-may eventually be in fresh water slip year around
-material has to be California legal

What was the product used to repair the blisters? Was it vinylester putty, polyester putty or an epoxy based putty? If it was a polyester type of filler you will want to seal it with an epoxy or a barrier coat as polyester "Bondo" type products can absorb moisture and after ding all that repair you probably don't want that.

If it is only going to be in the water a max of three weeks you might not bother re-painting the bottom and instead just sealing it with a barrier coat product like Interprotect 2000E. If you really must paint a multi-season, haul & re-launch capable ablative is the way to go.

Joe · Oct 4, 2009

Otis Driftwood said:
Sweet, I was looking at the 2000e and the 3000, Anyone know the difference?

I was on the fence about using anti-fouling paint but the boat's up and sanded now so I thought I may as well.

For the paint I was looking at the Micron extra, West Marine Brand, and a couple others.

3000 is epoxy barrier coat........... 2000e is primer to bond antifouling paint to epoxy.

from westmarine site: re: interprotect 3000

Microplates® act like shingles to prevent water absorption
High solids, VOC compliant epoxy with Microplates®. Can be used down to 32°F. Use Interprotect® 2000E as tie coat prior to the application of antifouling paint.

Maine Sail · Oct 4, 2009

Joe said:
3000 is epoxy barrier coat........... 2000e is primer to bond antifouling paint to epoxy.

from westmarine site: re: interprotect 3000

Microplates® act like shingles to prevent water absorption
High solids, VOC compliant epoxy with Microplates®. Can be used down to 32°F. Use Interprotect® 2000E as tie coat prior to the application of antifouling paint.

Joe,

Both 3000e and 2000e are epoxy barrier coats. Most every boat yard that does barrier coating uses 2000e. 3000e has a wider temp range, is more VOC compliant and was originally intended as a spray product though it can be rolled.

With a roller 3000e goes on slightly thick and does not leave as smooth a finish as 2000e probably due to the higher solids content. I've rolled both products and prefer 2000e if you can guarantee the temp won't dip below 50f. 3000e is thicker and usually requires 3-4 coats to get to 10 mils (2000e takes 4-5) so sometimes less coats are needed but it also goes on a little sloppy. If you want a smooth bottom 2000e is the way to go IMHO, but both will work just fine....

Joe · Oct 4, 2009

Maine.... thanks for your comments. Those product descriptions can be misleading. I read both the 3000 (not 3000e) and 2000e overviews and it appeared that the 2000e was used as a primer, or tie coat, to chemically bond antifiouling paint to 3000 (and other surfaces, too). Your response allows me to consider the 2000e as a stand alone barrier coat and since it's cheaper than the 3000 I thank you.

By the way, here is the product description for 2000e as it appears in the WM site.

Universal above- and below-the-waterline epoxy primer
A high build universal above and below waterline epoxy primer for all surfaces. Fills severe cracks and crazing in gelcoat. Adheres well to properly sanded bare metal. Offered in gray, or white, which is excellent as a topside primer.

Total Thickness Required: Above waterline: 2 coats; below waterline: 4-5 coats (10 mil minimum)
Drying Time: Overcoating: 3 hrs. to 2 wks @ 60°-80°F.
Coverage: Brush: 60sq.ft/qt., 240sq.ft./ gal.; spray: 45sq.ft./qt., 180sq.ft./gal.
Application Method(s): Brush, roller, airless/conventional spray Thinner: Interlux 2316N, Model 198598 (10% reduction limit)
Quart or gallon

Prime Time · Oct 5, 2009

Paint Selection

Not all paints allow you to remove the boat from the water and replace while maintaining activity. Choose carefully. There is a difference in some fresh water vs. salt water paints. I'd choose the paint that met my immediate need. If you did an epoxy job on your bottom, you will need a specialized primer prior to bottom painting.

Need Bottom Advice

.

.

.

.

.

.

.

.

.

.

.

.

Attachments