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  #1  
Old 04-10-2012
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Post Soda Blasting??

So we had 30 yrs of bottom paint blasted off. Wow is all i can say. Even I feel lighter. Now the prep before barrier coat. Should I use automotive bondo to fill the small voids and imperfections? Also how many coats (roughly) should I expect from a gallon of barrier coat for a 30' boat with fin keel? I won't hold you to it. Just need a starting point.
J
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Old 04-10-2012
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Re: Post Soda Blasting??

Quote:
Originally Posted by jppp View Post
So we had 30 yrs of bottom paint blasted off. Wow is all i can say. Even I feel lighter. Now the prep before barrier coat. Should I use automotive bondo to fill the small voids and imperfections? Also how many coats (roughly) should I expect from a gallon of barrier coat for a 30' boat with fin keel? I won't hold you to it. Just need a starting point.
J
Bondo - no. Make your own epoxy filler. I got two coats on a 43' from a gallon of Interprotect.
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Old 04-10-2012
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Re: Post Soda Blasting??

3M makes a very good filler for this purpose and it is easier to work with then epoxy. It is called Premium Filler.

The barrier coat you are using will have info on how much it covers. I used Interprotect 2000, alternating between grey and white coats so it was easy to see your coverage. About two coats per gallon I think but it was a few years ago.
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Old 04-10-2012
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Re: Post Soda Blasting??

5 on my Oday 30 was 2 gallons but we put it on thick on the bow and keel areas.
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Re: Post Soda Blasting??

Hello,

I went through that same process in 2007.

After soda blasting I lightly sanded the hull, refinished the keel, touched up the hull, barrier coated with Pettit Protect, and then ablative bottom paint.

I used Quick Fair from System Three. It was easy to apply and sand.

On my 35' boat I got about 1 coat from a gallon on Pettit protect.

You can see my results and read more about it here:
bottom paint 1, me 2, all done, test

Good luck,
Barry
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Old 04-11-2012
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Re: Post Soda Blasting??

Thanks all. I love this forum, it makes me look like a genius to my boat partners.
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Old 04-12-2012
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Re: Post Soda Blasting??

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Originally Posted by jppp View Post
Thanks all. I love this forum, it makes me look like a genius to my boat partners.
Lucky you! It made me look like an obsessive detail hound to my boat partners. At least I assume it was Sailnet that did that
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Old 04-12-2012
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Re: Post Soda Blasting??

Dont get creative with a once-in-30-years bottom job, use Interlux Watertite as filler
Watertite Boat Filler | Interlux
then Interprotect bottom coating. See
Interprotect 2000E Osmosis Prevention | Interlux

You can do your own estimate at
http://www.yachtpaint.com/Literature...de-usa-eng.pdf

Finally, any questions at all, call their 800 number they are extremely patient and helpful.
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Old 04-12-2012
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Re: Post Soda Blasting??

Bondo: Only if you're a u-boat commander as in the movie "Risky Business".

You're going to a lot of time and trouble to strip the boat down and "do it once do it right". Right?

So look at the MANUFACTURERS" INSTRUCTIONS on the product(s) you want to use. Starting with the barrier coat, see what they say is the best filler/primer, see what tey say are compatible products under and over it, see what they say the coverage rate is when it is applied at the correct thickness. Too thin is no good, too thick is no good.

Maybe you can save a buck by cheaping out on materials, but if you want the product to perform AS WARRANTEED, you stick to the whole list of compatible and correct products that the maker says will do the job.

Don't get pennywise on a job like this.
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Old 04-12-2012
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Re: Post Soda Blasting??

Quote:
Originally Posted by BarryL View Post
Hello,

I went through that same process in 2007.

After soda blasting I lightly sanded the hull, refinished the keel, touched up the hull, barrier coated with Pettit Protect, and then ablative bottom paint.

I used Quick Fair from System Three. It was easy to apply and sand.

On my 35' boat I got about 1 coat from a gallon on Pettit protect.

You can see my results and read more about it here:
bottom paint 1, me 2, all done, test

Good luck,
Barry
Nice job. What is the going rate for a soda blast in your area?
Regards
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