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Bottom paint: Micron Extra/CSC, Pettit Ultima SR-40/SR-60
I am looking to repaint the bottom of my sailboat. It is going on three years since it was done by the previous owner. The paint currently is/was an ablative paint.
I sail in the gulf along the FL panhandle, and I am planning on going with another ablative paint. Barnacles are problem here. So far I have narrowed my choices down to 4 paints. I was originally planing on going with an Interlux, but I recently came across the Pettit Ultima paints which currently have rebate offers ($10-$20/gal off).
I would greatly appreciate any input on the 4 paints listed below. I am leaning towards the SR-80 or the Micron Extra(SR-80 with rebate is $40 less per gallon). For a C&C 29 mk1, I expect I'll need two gallons. Has anyone had good success with the SR-80? I searched the Sailnet forums on SR-80 and found no hits, so I guess it is rather new product.
Well you guys have me thinking. I think I am going to call Pettit tomorrow and see what their experts suggest. The original Vivid recommendation came from sales guys at their booth at the Annapolis Boat Show, but the questions raised here are very valid.
I went with the Petit Ultima SR-60. Since then, my boat has been in the water for 1-1/4 years, and the bottom still looks newly painted! I have had a little bit of green slim and have gently wiped down the bottom two times over the last year.
In an area where barnacles and oysters are a big problem, I have no, zero, zilch problems from to these critters. I am hoping to go three years before hauling out again. So far so good.
I am looking to repaint the bottom of my sailboat. It is going on three years since it was done by the previous owner. The paint currently is/was an ablative paint.
I sail in the gulf along the FL panhandle, and I am planning on going with another ablative paint. Barnacles are problem here. So far I have narrowed my choices down to 4 paints. I was originally planing on going with an Interlux, but I recently came across the Pettit Ultima paints which currently have rebate offers ($10-$20/gal off).
I would greatly appreciate any input on the 4 paints listed below. I am leaning towards the SR-60 or the Micron Extra(SR-60 with rebate is $40 less per gallon). For a C&C 29 mk1, I expect I'll need two gallons. Has anyone had good success with the SR-60? I searched the Sailnet forums on SR-60 and found no hits, so I guess it is rather new product.
We have been using the Petit Ultima SR in the south Tampa Bay area for quite some time and have found that even after 2-1/2 years, the paint remains very effective. FWIW we have the bottom wiped down once a month or so by our diver.
We use Ultima 60 in an environment which has salinity and fresh water also. Since you are on the Delaware is there no salt water where you are? Hard to beleive in the summer when the salt line comes up the Delaware it doesnt reach Essington. So its entirely fresh water where you are? I would have though you had some salt content to it.
Has anyone applied Pettit Ultima SR-60 hot-coated over Interprotect 2000? I had my bottom peeled and a new vinylester layup applied. My fiberglass guy is recommending Interprotect and I want to use the Pettit Ultima SR-60 over that. Interlux says that hot coating (thumb print test) with Ultima SR-60 is ok. Here's the thing: the instructions for Pettit's version of epoxy barrier coat has instruction for hot coating with bottom paint that sound similar to Interlux's, except for the SR-60. For SR-60, the barrier coat should be set up to "Tack free". SR-60 uses a different solvent than SR-40 and the other paints, so I'm wondering if that is why the difference. Anyway, I know at least someone had put SR-40 over Interprotect, I was wondering if anyone has had success or problems with hotcoating Interprotect with the SR-60.
I used Horizons as the "hot coat" layer at the advice of Pettit. Horizons is the same base co-polymer paint without the slime blocker and a little less copper (equal to Ultima SR40). They suggested the non-slime blocker as the hot coat/tracer then you can switch to Ultima SR. This went over IP2KE 6 years ago and there are zero adhesion or build up issues. Steve Miller our local rep up here has recently told me that hot coating with either SR40 or SR60 is not a problem at least with their barrier coat. He would not comment on IP2KE which is what I used.
Keep in mind that as copper content goes up, and slime blockers get added, coverage per gallon goes down slightly. SR60 covers about 400 sq ft. and Horizons covers about 500 sq ft., SR 40 about 450 sq ft. SR60 has a different solvent than SR40..
Just finished applying SR60 and it is tough to cover my hull with 1 gal but I can easily do it with SR40. SR40 is the exact same paint as West Marine PCA GOLD...
Main: It was your posts specifically that prompted me to ask both Interlux and Pettit about whether it was better to hot coat the barrier coat with a non-slime inhibitor paint. Both said it's fine. Go figure huh. Either they have changed their thinking or you spoke to someone at Interlux/Pettit that knew either more or less than those I talked to. At this point I think I'm going with the SR60 over Interprotect 2K hot coating at thumbprint tacky. It seems others have done this with good results (so far). It seems that most are happy with SR60 in general. I hardly ever go faster than 6 kts, so your logic regarding Ultima SR 60 vs. Micron Extra makes sense.
I used 2 coats of SR-60 over 2000e last month and "hot coated" the first coat of SR-60. I didn't have any issues. The boat's back in the water now though, so if any long-term issues come up, I won't know for a while.
I'd be curious to check out the literature you were looking at if you have a link? I found Pettit's TB-Z155 Bottom Painting Bare Fiberglass technical bulletin advised applying SR-60 to their 6999 Sandless Primer tack-free. But as far as I can tell, the 6999 is not an epoxy product. Their 4700/4701 looks to be a 2-part epoxy barrier coat more similar to the 2000e. I couldn't find any info specific to SR-60 over the 4700/4701.
4arch : You are right! I just checked and I guess I had a brain fart. The requirement for tack free for the SR60 was for the 6999 Sandless Primer. The Pettit Protect epoxy primer has times to wait before coating with bottom paint. No distinction is made for any Pettit bottom paint.
3. Apply the first coat of Pettit antifouling paint overthe last coat of epoxy within the specified overcoating schedule shown
below.
Hull Temperature To Bottom Paint(Hours)
90° F 3*‐*6
70° F 5*‐*8
50° F 7*‐*10
If these dry times are exceeded, you must sand the last coat of epoxy thoroughly with 80 grit production paper before applying antifouling paint or apply another coat of epoxy if recoat window has not been exceeded. Do not apply antifouling paint before the minimum dry time, as mud cracking of the antifoulingmay result.
This seems similar to what Interlux says for Interprotect 2K. Thanks for catching my error! I was about to throw in the towel and just use Micron Extra as I really don't want any adhesion problems. FWIW, Interlux seems to have really good customer support between their reps and the online help forum. Pettit has also been responsive in returning emails, though the responses are a bit light on detail. Pettit customer service did say that the SR-60 will bond well with the barrier coat. To be fair, I've been asking both companies a question about how their product will work with another companies product.
I sanded the bottom down to the barrier coat, applied Interprotect 2000 down one side and up the other. Then within 15-20 minutes of completing that, I started my application of SR-60. Three coats SR-60 in all.
The boat has been in the water for over 18 months now and still looks great with no hard growth(Carrabelle, FL). After the first year, I found that I need to wipe off the slime using a microfiber glove. I have wiped it down a few times now, and I am hoping to get another 12-18 months at least before another application of SR-60.
Glad that it's working for you. This is the same recipe I plan to follow. I bit scary mixing products from different manufactures, but this seems to be the best logical approach. Thanks for the tip on the mitt. Seems a good way to wipe down with out taking off too much paint while you're doing it.
Agree, we just had the diver down on our 3 year old paint and the prop need work, but the paint had little growth he said. Must be something in the water across the river.
Read where they are located. You need a lot more protection in FL waters because the water is much warmer and loves slime and barnacles.
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