Help me choose sprayer for Interprotect - SailNet Community

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Old 04-25-2011
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Help me choose sprayer for Interprotect

I am almost done sanding the bottom of my 27.5 foot boat, and now confront the problem that my hoped-for roll-and-tip partner will not be available. I have to finish the job myself, outdoors, in New England where I cant count on good weather every day -- even if I didn't have to work as well.

The only way to apply several coats of Interprotect and anti-fouling -- smoothly and within a reasonable time -- is to spray it.

I am considering rental, but the price is so high that purchase seems to be the best option. Home Depot, for example, would charge about $350 per week for an airless system -- with no guarantee as to the condition.

I know that Interprotect recommends either airless or conventional, but I think some folks have had success with HVLP.

Please recommend specific makes and models, and describe your experience. I have to make a decision really quickly.

Thanks.
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Old 04-25-2011
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I am gonna really recommend you DO NOT spray it as this would be a really bad way to learn about spray painting
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If a dirty bottom slows you down what do you think it does to your boat
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Old 04-25-2011
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I have spray painted in the past, but am looking for up-to-date equipment that can actually handle two-part barrier coats like Interprotect.
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So how are you going to move the jack-stands in a timely fashion and contain the over-spray

Cause i sprayed plenty of stuff and it does not scale up well and i am finishing with roll and tip due to those issues
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Old 04-25-2011
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Viscosity

Not to oversimplify things - but it sounds like a numbers game to me. Match the sprayer to the viscosity of the Interprotect.

Manufacturers would be your best source for selecting a sprayer - again not to oversimplify . . .
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Old 04-25-2011
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Just put on your coats with a roller and sand the final finish smooth. Not really a big job on a 27 footer. If you are worried about losing a little put one extra coat on.
I did it on mine and have basically a perfect bottom.

Gary
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Old 04-26-2011
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I use a Develbiss HVLP gravity feed gun, they make a good job and are affordable. They come with tips up to 2.2 hope ya have a big compressor, i need a 5.5hp gas compressor and have an additional 80 gallon reserve tank. I also use a graco Mark V airless paint machine, works great, overspray is nil. Have all cleaning apparatus set up and ready to go before beginning, and prepare for having to roll and tip it out alone if your machine should malfunction, or be prepared to toss and try again. If you wanna buy a useful spray setup, go to a pawn shop and find a small airless, then buy a new tip for the gun, and you will be good to go. Graco makes good little sprayers that are perfect for this, just don't forget to CLEAN IT! Remember to check the MSDS Sheets, or phone the paint MFG. so you buy the correct filters for you respirator. Neglecting this might/will kill ya in a day or so... if ya didn't know.
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