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Old 12-13-2014, 09:56 PM   #21
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Not to hijack a thread, but having been shrinkwrapped for two months, today upon inspection I noticed where the moisture is coming from. Almost the entire inside of the shrinkwrap is dotted with condensation. Not enough vents I assume. The shrinkwrap guy said 3 per side was enough on a 30' boat. Apparently not. How about forced ventilation? I noticed some stick on solar vents from Defender. Any one have experience with these?

I didn't want to shrinkwrap. But the boat has concrete ballast in the keel. So I wanted to keep as much moisture out of the boat so the concrete doesn't expand from freezing. It may be that shrinkwrap actually increases the moisture content.
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Old 12-13-2014, 10:59 PM   #22
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Maybe I skimmed too fast, but 2 things I didn't notice:

1. change the oil before putting it away for winter.
2. disconnect the fuel line and run it till its dry.

This way any contaminants in the oil won't sit there all that time and fuel won't gum up inside the OB. Besides that and flushing it with water I've never done anything else and never a problem.

Harry
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Old 12-14-2014, 06:11 AM   #23
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Quote:
Originally Posted by cappy208 View Post
Not to hijack a thread, but having been shrinkwrapped for two months, today upon inspection I noticed where the moisture is coming from. Almost the entire inside of the shrinkwrap is dotted with condensation. Not enough vents I assume. The shrinkwrap guy said 3 per side was enough on a 30' boat. Apparently not. How about forced ventilation? I noticed some stick on solar vents from Defender. Any one have experience with these?
I'll be watching for replies. This is the first time I've winterized and shrink wrapped. I'm located just south of Annapolis, MD.

I put 3 of those moisture buckets inside hoping that would take care of some of the moisture.
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Old 12-14-2014, 07:45 AM   #24
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>I went through 36 gallons of RV antifreeze, some over kill and some wasted.<

The RV folks sell water heater winter bypass valves , that help redice the volume of AF required.

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Old 12-14-2014, 01:08 PM   #25
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I'll be watching for replies. This is the first time I've winterized and shrink wrapped. I'm located just south of Annapolis, MD.

I put 3 of those moisture buckets inside hoping that would take care of some of the moisture.

I have found so far that the flexible bags from Walmart work better. Two of those are about filled up in a month. And the buckets aren't even absorbing anything.

I am just trying to get ventilation via solar covered.

Here's a nicro vent I installed yesterday. Cut a piece of plywood the size of the hatch frame, with some weatherstripping. Held in place by cleats underneath and on top with cross crossed bungee cords (if the shrinkwrap blows off). Click image for larger version

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Now I have to figure out how to ventilate the entire shrinkwrap envelope. Seems the little 'stick on' vents don't do enough to vent.
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