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post #1 of 5 Old 04-06-2009 Thread Starter
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Removing Penetrol

OK...My deck was chalky so I used Penetrol at the advice of some others. I did it last summer, first on a test spot. The test coat was amazing, so after a few weeks applied another coat to the deck, particularly to the nonskid. It restored the "luster of the nonskid."

Later it started to run, I think from hot sun, and looked like a I spilled varnish on the deck. There are also areas where it has acted as a dirt magnet and I have been unable to remove the dirt lines with intensive scrubbing. So the deck looks bad, but I think it is gradually coming off. But that could take another year.

Does anyone have some practical advice for removing the Penetrol and the dirt that has stuck to the deck where the Penetrol was. I should have taken pictures this weekend but didn't. I am assuming any kind of solvent would be bad for the gelcoat.

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post #2 of 5 Old 04-06-2009
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Power washing should remove a good portion of the dirt and penetrol. Any good solvent wash; like Interlux Fiberglass Prep Wash 202, will probably do a pretty good job of it too, since Penetrol is just a bunch of petroleum distillates.

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post #3 of 5 Old 04-06-2009
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I removed Penetrol from my hull prior to using Poliglow. The polyprep cleaner in the Poliglow kit easily removed the Penetrol.
Marc, NS26C, Westbrook, CT
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post #4 of 5 Old 04-06-2009 Thread Starter
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Thanks both!! I will try the 202 and Powerwasher first and then the Poliglow prep.

Bottom line is I don't think I'll use Penetrol again on deck. That was a mistake.

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post #5 of 5 Old 04-06-2009
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Penetrol is generally a bad treatment - the results, while impressive initially, don't last long and the residual removal is, as you're finding, a pain.

If you're using the 202 please wear an appropriate respirator, and it may take several washes to be sure it's all gone.

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