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Old 08-07-2015, 11:02 PM   #1
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Replacing Fantastic Vent - Sealant Removal Pain!

I am replacing the fantastic vent in my kitchen with a more modern Fantastic vent and I am having trouble getting all the sealant off. I got the bulk of it off, but Winnebago also has a clear silicone layer under that - and it don't want to come off. This is a fiberglass roof.

I have used a Dremel Multi-Max with scraping bit, heat gun, plastic scrapers and mineral spirits. The Dremel gets some of it, usually leaving it thinner but still there. Is there a better solvent than the mineral spirits.

So my question is do I need to get it all off or will this thin layer (some of which is off now) be OK to leave and just clean it well and use Dicor Butyl Seal Tape on top of that and then Dicor self leveling lap sealant, and maybe eternabond to finish it off?

I use to scrape sealant off the insides of KC-135A's fuel tanks with little wood sticks, and that came off easier than this stuff.
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Old 08-08-2015, 01:13 AM   #2
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I think that any stronger solvent could damage the roof material, cleaning any remaining sealant with mineral spirits will allow the new sealant to bond.
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Old 08-08-2015, 11:51 AM   #3
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Quote:
Originally Posted by Skip426 View Post
I think that any stronger solvent could damage the roof material, cleaning any remaining sealant with mineral spirits will allow the new sealant to bond.
OK thanks
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Old 08-08-2015, 11:54 AM   #4
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Try acetone, it will not harm the fibre glass gelcoat.
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Old 08-08-2015, 08:16 PM   #5
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Quote:
Originally Posted by Skip426 View Post
I think that any stronger solvent could damage the roof material, cleaning any remaining sealant with mineral spirits will allow the new sealant to bond.
, note to self re-read original post, before responding.
Sorry , I skimmed over the "fiberglass roof" in the original post, there is a product called; silicone be gone.
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Old 08-08-2015, 09:51 PM   #6
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http://www.amazon.com/s/ref=nb_sb_no...licone+remover
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Old 08-08-2015, 11:50 PM   #7
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Get what you can off, use the butyl tape underneath it, but instead of lap sealant use Eternabond tape, if it is put down properly you should never have to worry about sealing it again. I did my vents a few years ago, and am now looking to seal around everything else with Eternabond, no to low maintenance.
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Old 08-09-2015, 08:01 AM   #8
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Go to your localauto parts store nd get a can of brake parts cleaner. It has many uses.
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