Silicone Remover? - Fiberglass RV


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Old 04-03-2012, 06:07 PM   #1
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Silicone Remover?

Just picked up a bottle of DAP brand Silicone Sealant Remover, called Silicone-Be-Gone.

I'll report back later after I try it out - right now it is just "a teensy bit damp" outside.

When the rains stop and things dry off, I'll try it on some silly-coned stuff a PO did and we'll see if this stuff is worth the powder of if I wasted 8 bux.
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Old 04-03-2012, 07:30 PM   #2
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Well, after your post in Forum Admin, News & Announcements, I scooped this product name Mckanica Silicone Caulk Remover Gel" and checked it out: Amazon.com: Mckanica Silicone Caulk Remover Gel: Home Improvement I always read the recommendations and this one really caught my eye:

"I ordered the Mckanica silicone caulk remover to remove silicon caulk a prior owner of my RV slathered all over the seams. It was impossible to get the caulk off using mechanical methods, boy did I try. The area of the RV I did a test application on was a seam between a painted metal flashing and the fiberglass side wall. The Mckanica is a gel and comes in a caulking tube. After squeezing a little bit out on a plastic tray I applied it to the silicone slathered seam. After a few hours I came back and wow the Mckanica just melted the silicone. You could literally wipe the silicone away with a cloth with no silicone left behind. The Mckanica also did not affect the paint on the metal flashing, an added bonus. Great product, will be ordering more soon."

But at $18 for 12 oz, I'm curious if what you're trying works as well and for less $. So, yes please... let us know.
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Old 04-04-2012, 08:24 PM   #3
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Yep, I'll be following this with interest. The 'belly band' seam on my Trillium is filled with painted silicone like material (didn't think paint would stick to silicone but it has on this stuff, sort of). Need to get that stuff out before I fill the seam with epoxy for painting.
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Old 04-05-2012, 01:07 AM   #4
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More brands of Silly-cone remover?

I have also found TWO more brands! One is by 3M (for the trivia fans - do you know what the 3 M's stand for?)

The 3M product is called Caulk Remover and claims to work on ALL kinds of caulk - says it softens caulk for easy removal. $6.49 at Hardware Sales Inc in Bellingham, Wa this afternoon

The other, also from Hardware Sales, cost $5.99 at the checkout, and is called Motsenbocker's Lift Off. There are the little German pair of dots over each of the O's in Motsenbocker's. Neither Home Despot nor Lowes carry anything and I ran out of time before my meeting so I could not check Ace or True Value Hardware
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Old 04-05-2012, 06:52 AM   #5
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Quote:
Originally Posted by BCDave View Post
I have also found TWO more brands! One is by 3M (for the trivia fans - do you know what the 3 M's stand for?)

The 3M product is called Caulk Remover and claims to work on ALL kinds of caulk - says it softens caulk for easy removal. $6.49 at Hardware Sales Inc in Bellingham, Wa this afternoon

The other, also from Hardware Sales, cost $5.99 at the checkout, and is called Motsenbocker's Lift Off. There are the little German pair of dots over each of the O's in Motsenbocker's. Neither Home Despot nor Lowes carry anything and I ran out of time before my meeting so I could not check Ace or True Value Hardware
I think I remember Minnesota & Mining, can't remember what the other 'M' was for...
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Old 04-05-2012, 07:36 AM   #6
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...and Manufacturing. I think.
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Old 04-05-2012, 10:35 AM   #7
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Yup - those are the 3 M's
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Old 04-07-2012, 07:05 PM   #8
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Tests of Silicone removers (long)

TEST OF SILICONE CAULK REMOVERS


BRANDS TESTED :
DAP Silicone-Be-Gone,
3M Caulk Remover
Motsenbocker's Lift-Off - Caulk, Silicone and Foam Sealant Remover
Control-test: White vinegar (Silicone caulk is generally based on acetic acid - vinegar - which you can strongly smell when using the stuff )


Test conditions: Bright sunshine, temperature: plus 15 degrees (Celsius) Humidity 60%, zero wind
Test Subject: 1999 Bigfoot model 25B21RB (21 footer) with silicone applied (no idea how many years ago) around clearance lights, windows and tail lights, as well as access doors and hatches
Notes: The DAP Silicone-Be-Gone is in a white 90ml plastic bottle, on a blister-pack card, with an applicator brush provided. It is a thick gel, appears dark brown in the jar, and is a pinkish-brown on application to a white surface.
The 3M Caulk Remover is a 8 oz (236 ml) squeeze bottle with a flip-top cap. It specifically says that it works on ALL caulks, and "softens caulk for easy removal" Not on a card - is a stand-alone bottle on a shelf at the store. It is a white liquid that runs very easily when applied to vertical surfaces.
The Motsenbocker's Caulk, Silicone and Foam Sealant Remover is a 4.5 oz (125 ml) squeeze bottle with a flip top, also on a card, but not a "blister pack" It is a clear liquid gel, applies easily, stays in place fairly well. Brush-on proved to be the best method of application.
White vinegar (used as a control substance for this test) can be found everywhere in grocery stores and costs far less per gallon than any of these products do for a small bottle.
NOT TESTED: McKanica Silicone remover (I had a bottle of it, which has somehow vanished and I did not want to delay the tests any further. Several folks are apparently awaiting results so I pressed on.)
All were applied following package directions exactly. the DAP and 3M were applied and allowed to sit for 3 hours before any rubbing or wiping was done. The Motsenbocker's was applied and allowed to sit for 3 MINUTES (not hours!!) and then rubbed with an old toothbrush, then scraped with a plastic spatula, then wiped with a clean white terry cloth.


RESULTS:
Control solvent: White Vinegar did not do anything at all. Oh well........
Motsenbocker's
I did not have high hopes for the Motsenbocker's as it was labelled as being "Certified Green, biodegradable and water-based", while silicone caulk itself is anything but - so somehow I had the idea that anything short of thermonuclear solutions would be ineffective against silicone caulk.
I was therefore very pleasantly surprised to find that two applications, scrubbing with an old tooth brush after 3 minutes each time, and then scraping with an old plastic spatula resulted in removal of most of the excess silicone around one of my windows. However, some residue remained that neither repeated applications of Motsenbocker's nor scrubbing with a toothbrush soaked in Motsenbocker's made any progress on. A razor blade was then employed, followed by a lengthy and vigorous scrub with a 3M 'white abrasive pad' and Barkeeper's Friend , with ultimately satisfactory results. This is, of course the reason why so many folks on here HATE silicone caulk - you cannot get it to stick onto fibreglass unless you want it to (then it comes off easily!) , you cannot get the residue off and you can't put anything on over it!
Motsenbocker's Score:

Ease of use: A
Effectiveness: C (sticky residue remained)
Time required: 3 min

3M
Save your money. Although not tested against plain water, it can be confidently expected that the results would be very similar. No effects could be found where it had been applied. Thinking "It CAN"T be THAT bad, can it?", it was re-applied and again allowed to sit - this time for 2 hours. Same result.
It CAN be that bad. It is.
3 M Score:

Ease of application: A
Effectiveness: (Are there any scores below F minus?)
Time required ??????


DAP Silicone-Be-Gone
If all silicone removers worked this well, there would not be anywhere as much hatred for silicone caulk.
Brush it on, using the supplied brush. Let it sit for 3 hours. Come back with a thin plastic spatula, and scrape off the (now jellied) caulk. Wash and dry with clean cloths. Look for any trace of any residue. There was none. HIGHLY RECOMMENDED, based on the results of this test (YMMV)
DAP Score:

Ease of application: A+
Effectiveness A++
Time required 3 hrs
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Old 04-07-2012, 07:50 PM   #9
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Excellent, excellent write up Dave. Thanks so much for adding to the knowledge of this group! If you should come across the Mckanica Silicone Caulk Remover, I'd really appreciate hearing your opinion of that brand as well... for that just-in-case time a person can find one brand, but not the other.

Thanks again
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Old 04-07-2012, 08:22 PM   #10
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I will be off to Home Depot for some DAP now.

Its Karma for them..ever try to remove ANY DAP caulking product? Its worse and messier than silicone.
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Old 04-07-2012, 08:32 PM   #11
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Outstanding write up.

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Old 04-07-2012, 09:20 PM   #12
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Thanks for that Dave. Just checked, Lowes about 10mi from me is a DAP dealer, as is a local Hardware store couple of miles down the road. I'll check them this week.
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Old 04-07-2012, 10:00 PM   #13
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I never even looked for the DAP Slicone-Be-Gone caulk remover at Home Despot or at Lowes, but had no problem finding it (at $5.99 per bottle) in my local Co-Op centre (Otter Co-Op in Aldergrove, BC)
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Old 04-08-2012, 06:58 AM   #14
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As they say on the DAP website, not all dealers carry every product so I'll hafta check at the stores but I betcha I'll find it somewhere nearby. Was really dreading trying to remove all that stuff from the seam on the Trillium; now perhaps not so much...
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