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Old 03-01-2018, 06:45 PM   #1
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Removing solar panels mounted with VHB

Has anybody needed to remove a solar panel that they mounted with VHB + Sikaflex? How do you do it? I was thinking a guitar string might be able to cut through the tape, but perhaps there is an easier way.

Is there a solvent to clean up cured sikaflex?

I'm adding another panel, and it will be shifted from the one next to it by an inch or two (due to the air conditioner), so I need to move the existing one (slightly) so I don't lose my mind.
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Old 03-01-2018, 07:34 PM   #2
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The string/floss/wire method is the best and safest method for protecting the finish of the shell.
Not sure about sealant removal.
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Old 03-01-2018, 07:59 PM   #3
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Plastic single edge razor blades, used gently and slowly. Try Amazon.
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Old 03-01-2018, 08:33 PM   #4
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Go to AM Solar website and watch their video
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Old 03-02-2018, 07:12 AM   #5
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Thanks, the video was helpful.

Does AM Solar not seal around the edges with Sikaflex? I wonder how much harder it will be since it is sealed
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Old 03-02-2018, 07:13 AM   #6
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I did come across this:

"According to Sika Corporation, cured Sikaflex may only be removed mechanically; cleansing agents will not work." I guess perhaps that's why it is so effective...
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Old 03-02-2018, 07:59 AM   #7
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Quote:
Originally Posted by cerickson View Post
Thanks, the video was helpful.

Does AM Solar not seal around the edges with Sikaflex? I wonder how much harder it will be since it is sealed
Not sure, but Lewster is one of their "preferred installers" and he does. I'd carefully dig the sealer away from around the edges and then use the AM solar method on the tape. Clean everything up after the feet are dis-engaged.
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Old 03-02-2018, 08:09 AM   #8
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Mineral spirits will soften cured Sikaflex. But you still need a bit of elbow grease. A plastic or metal Spackle applicator is helpful. I started with a plastic one but found that it was easier to use a metal one and it wasn't hard to control it to avoid scratching the painted aluminum roof.
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Old 03-02-2018, 09:42 AM   #9
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After you used whatever spirits you tried. Use old fashioned baby oil. Soak it daily for a few weeks. It works on a lot of adhesive.Just not sure of what your adhesive is. But its worth a try for a buck
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Old 03-02-2018, 09:55 AM   #10
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When removing items on our sail boat that had been sealed with polyurethane adhesives like 3M 5200, I used a product called Debond. It is available at most marine stores.
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Old 03-02-2018, 10:15 AM   #11
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Alcohol will make short work of the 3M tape. I use a kitchen pan scraper and pour some alcohol at the 3M edge and work the scraper under as I go.
(https://www.amazon.com/Progressive-I...ds=pan+scraper)
Just removed an old sewer vent with the scraper and it cleaned the factory caulk without any issues.
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Old 03-02-2018, 02:29 PM   #12
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My philosophy, most of the time, of working on the roof of trailer has been; out of sight, out of mind. I use a multi tool with the scraper blade, works great. Final clean up with carburetor or brake cleaner. This works the same as Eterna bonds Eterna Clean.
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Old 03-05-2018, 03:58 PM   #13
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In may last clean up job repairing the rear fantastic fan, I used a (new) long handled plastic windshield ice scraper and it did a nice job.
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Old 03-05-2018, 09:21 PM   #14
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A heat gun will also work.

https://solutions.3m.com/3MContentRe...bute=ImageFile
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