removehtml]having the bottom sandblasted this winter and looking to apply a barrier coat. anyone have any experience with one manufacturer over the other. i'm looking into petit and interlux and just looking for some feedback.Error: Error: expected [/URL], but found [/removehtml] instead[/removehtml]
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No experience with a barrier coat...
for me. I have a 25 year old boat with no barrier coat or blisters... I am not messing around with the bottom! If you do sandblast (I would definately put on a barrier coat or 3. Interlux makes a good product. Make sure it is a different color than your bottom paint... so you can see if you are wearing thin. You might want to check out sandblasting techniques/materials! There is a new product out there that is EASY on the hull (can't remember the name... saw it at the Boston Boat Show last year). They can come to your house... throw a tarp down... do what they do... and away they go the same day. Good luck, Rich
for me. I have a 25 year old boat with no barrier coat or blisters... I am not messing around with the bottom! If you do sandblast (I would definately put on a barrier coat or 3. Interlux makes a good product. Make sure it is a different color than your bottom paint... so you can see if you are wearing thin. You might want to check out sandblasting techniques/materials! There is a new product out there that is EASY on the hull (can't remember the name... saw it at the Boston Boat Show last year). They can come to your house... throw a tarp down... do what they do... and away they go the same day. Good luck, Rich
Bottom
I have barrier coated four boats. One I sanded it all the way to the gel coat. Never do that again. Two I used Peel Away from Home Depot, not the marine version. Followed directions, went home, came back the next morning and much of the bottom paint along with the special paper had fallen on to the tarp. I used a four inch putty knife to finish scrapping it off. Rolled up the mess and put it in the trash. Washed the bottom, sanded and then put on Interlux 2000/2001. Followed directions. Recommendation I have is to put the first coat of bottom paint on before the last coat of barrier coat is fully cured. They will meld together and stay together. Put on a second coat of bottom paint and launch. The fourth was stripped by someone else by sanding. I supervised because my leg was broken. You might try that. Hurts like hell though. Easiest is to just pay someone but it can fill you with pride to do her yourself. Best of luck.
I have barrier coated four boats. One I sanded it all the way to the gel coat. Never do that again. Two I used Peel Away from Home Depot, not the marine version. Followed directions, went home, came back the next morning and much of the bottom paint along with the special paper had fallen on to the tarp. I used a four inch putty knife to finish scrapping it off. Rolled up the mess and put it in the trash. Washed the bottom, sanded and then put on Interlux 2000/2001. Followed directions. Recommendation I have is to put the first coat of bottom paint on before the last coat of barrier coat is fully cured. They will meld together and stay together. Put on a second coat of bottom paint and launch. The fourth was stripped by someone else by sanding. I supervised because my leg was broken. You might try that. Hurts like hell though. Easiest is to just pay someone but it can fill you with pride to do her yourself. Best of luck.
Barrier Coats
To your question. Pettit and Interlux are both fine products. Inter-changeable to any bottom paint. Interlux 2000 is the most popular of the two. Read the can/box intructions and talk to folks who have applied the product. There are a few tips that you might find helpful.
To your question. Pettit and Interlux are both fine products. Inter-changeable to any bottom paint. Interlux 2000 is the most popular of the two. Read the can/box intructions and talk to folks who have applied the product. There are a few tips that you might find helpful.
West System Epoxy
I applied 8 coats of West System epoxy as a barrier coat a couple of years ago during hull restoration. As far as I can tell, it was a good choice. Gallon kits are about $100 on Ebay.
I applied 8 coats of West System epoxy as a barrier coat a couple of years ago during hull restoration. As far as I can tell, it was a good choice. Gallon kits are about $100 on Ebay.
Interlux worked well
We used Interlux 2000. It's expensive, but Defender offered it for nearly half price during their spring sale last year. Hopefully, they'll do it again. I believe the sale is usually at the end of March. Anyway, we have had good luck with the barrier coat. We live in R.I. too, so we waited until early May to apply it. (Don't do it on a hot day!) A gallon produced one coat on our Oday 26. We used two coats. Applying the stuff was a bit of a challenge. You have to mix it as you go, otherwise it will dry up in your paint tray. Make sure you work fast enough to apply the next coat while the previous one is still tacky. This is definitely a two-person job. As mentioned in the other posts, apply your antifouling paint next, before the barrier coat dries. This saves you from sanding and cleaning. After applying two coats of barrier and two coats of antifouling, we were ready for bed. We had a busy sailing season last year and the bottom still looks great. Good thing you only have to barrier coat once. It's tedious.
We used Interlux 2000. It's expensive, but Defender offered it for nearly half price during their spring sale last year. Hopefully, they'll do it again. I believe the sale is usually at the end of March. Anyway, we have had good luck with the barrier coat. We live in R.I. too, so we waited until early May to apply it. (Don't do it on a hot day!) A gallon produced one coat on our Oday 26. We used two coats. Applying the stuff was a bit of a challenge. You have to mix it as you go, otherwise it will dry up in your paint tray. Make sure you work fast enough to apply the next coat while the previous one is still tacky. This is definitely a two-person job. As mentioned in the other posts, apply your antifouling paint next, before the barrier coat dries. This saves you from sanding and cleaning. After applying two coats of barrier and two coats of antifouling, we were ready for bed. We had a busy sailing season last year and the bottom still looks great. Good thing you only have to barrier coat once. It's tedious.
thanks
mike how do you like allen harbor. i just sent in an application in. i'm hoping to get in this year but a friend of mine who belongs said probably more like next year. i'm over in greenwich bay right now.
mike how do you like allen harbor. i just sent in an application in. i'm hoping to get in this year but a friend of mine who belongs said probably more like next year. i'm over in greenwich bay right now.
It's great!
I really like Allen Harbor. They just dredged part of the channel, so it's easier for bigger boats to get in now. Last summer, there were spots that were only 4 feet deep at low tide. We only draw 2.5 ft with the centerboard up, so no worries for us. The harbor is well protected. Obviously, I would not recommend taking a dip in there because of its former designation as a naval dump. We've had a mooring there for 15 years. They just put in some new slips last year, and several people moved their boats off their moorings to the slips. There may be some spots available, but I'm not sure. The slips don't have utility hook-ups. On windless nights, the bugs can become a real problem too. Hope this helps.
I really like Allen Harbor. They just dredged part of the channel, so it's easier for bigger boats to get in now. Last summer, there were spots that were only 4 feet deep at low tide. We only draw 2.5 ft with the centerboard up, so no worries for us. The harbor is well protected. Obviously, I would not recommend taking a dip in there because of its former designation as a naval dump. We've had a mooring there for 15 years. They just put in some new slips last year, and several people moved their boats off their moorings to the slips. There may be some spots available, but I'm not sure. The slips don't have utility hook-ups. On windless nights, the bugs can become a real problem too. Hope this helps.
Sand Blasting?
You don't say why you are sand blasting? Too much paint on the hull to scrape or peel off; or blisters? Don't expect two coats of Interlux 2000 to replace the gel coat if you blast it off. I would suggest taking all the existing paint off the hull but leave the gel coat alone -- maybe using stripper instead of sand blasting, them make sure the hull is clean and dry & scratch sand with 80 grit; wipe down with rags damp with acetone to remove any impurities (suggest wearing a spray painter's mask with good filters and a full Tyvec suit and solvent proof gloves during this whole process). I put four coats of interlux 2000 on my hull after hand scraping down to the previous 2 coat epoxy barrier coat. You can mix enough to go around the boat once; mix another batch an do the next coat the same day. Come back the second day and scratch sand the orange peel texture just enough to get good adhesion of the two coats you expect to put on the second day. Add the 1st coat of bottom paint before the 2000 fully cures OR scratch sand and apply the bottom paint.
You don't say why you are sand blasting? Too much paint on the hull to scrape or peel off; or blisters? Don't expect two coats of Interlux 2000 to replace the gel coat if you blast it off. I would suggest taking all the existing paint off the hull but leave the gel coat alone -- maybe using stripper instead of sand blasting, them make sure the hull is clean and dry & scratch sand with 80 grit; wipe down with rags damp with acetone to remove any impurities (suggest wearing a spray painter's mask with good filters and a full Tyvec suit and solvent proof gloves during this whole process). I put four coats of interlux 2000 on my hull after hand scraping down to the previous 2 coat epoxy barrier coat. You can mix enough to go around the boat once; mix another batch an do the next coat the same day. Come back the second day and scratch sand the orange peel texture just enough to get good adhesion of the two coats you expect to put on the second day. Add the 1st coat of bottom paint before the 2000 fully cures OR scratch sand and apply the bottom paint.
bottom job
An important issue is why are you doing this. If you have blisters, you must open them up, sand to good glass and let them dry out until you hull is dry. Sand blasting is very controversial. It must be done by real experts. Some prefer soda blasting. Unless your hull is completely riddled with the pox, I would not blast it. I did a bottom job on my hull 3 seasons ago. I had a few large blisters and the hull was off the meter with moisture. I sanded off the paint. It took 2 yrs for the hull to dry out, I finally tented the hull with plastic and used a dehumidifier. I repaired the blisters with glass and then used the west system as directed by them. 3 seasons later, I still have a dry hull and no further blisters.
An important issue is why are you doing this. If you have blisters, you must open them up, sand to good glass and let them dry out until you hull is dry. Sand blasting is very controversial. It must be done by real experts. Some prefer soda blasting. Unless your hull is completely riddled with the pox, I would not blast it. I did a bottom job on my hull 3 seasons ago. I had a few large blisters and the hull was off the meter with moisture. I sanded off the paint. It took 2 yrs for the hull to dry out, I finally tented the hull with plastic and used a dehumidifier. I repaired the blisters with glass and then used the west system as directed by them. 3 seasons later, I still have a dry hull and no further blisters.
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