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Old 01-16-2010, 07:48 PM   #16
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Removing Silicone Caulk...


Concentrated acetone or good old fashioned rubber cement thinner (90 percent benzyne?) will get it but have an appropriate aspirator on AND PLEASE HAVE A WINDOW OR TWO OPEN!

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Old 01-22-2010, 07:28 PM   #17
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Removing Silicone Caulk...


What would be the best way to remove recent soft uncured silicone sealant?

I applied some old silicone to a basement wall crack in the corner and it
remains soft and liquid to the touch. What would dissolve this and clean
the concrete for some new fresh sealant?
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Old 01-23-2010, 01:13 PM   #18
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Removing Silicone Caulk...


i just used goo gone to remove the caulk from my cultured marble shower pan and aluminum door frame. It is a citrus based product and worked great. Squirt some on, let it sit a minute and scrape with a painters 5 in 1 tool or putty knife.
I took someones advice and cleaned with a majic eraser. I have a fan on it now and will re-caulk in an hour or so.
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Old 01-23-2010, 01:21 PM   #19
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Removing Silicone Caulk...


I would try acetone also. But make sure you have good ventalation!
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Old 01-24-2010, 07:38 PM   #20
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Removing Silicone Caulk...


There actually is a product called "contractor's Solvent" made by a company called De-solve It. This is a citrus type of solvent and will not harm your skin, stink up the house, or ruin the finish on your tub or tile. Excellent product specifically made for taking off cured silicone. Two things to keep in mind - first - it has to sit for about 15 mins before attempting to take off the silicone - can sit for as long as 24 hours. Second - you MUST thoroughly wash the area when done so the new silicone doesn't react with the solvent. Many True Value stores stock this.
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Old 04-02-2010, 12:05 PM   #21
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Removing Silicone Caulk...


I found a product at an Ace Hardware store that is called Motsenbocker's Lift Off. I just used it to get rid of silicone on a shower door I am resealing and it worked great. Just scrape as much off as you can and put the gel on the remaining silicone and let it sit for 5 min and it breaks up and wipes off. Then you wash the cleaner off with water. It is biodegradable.
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Old 05-05-2010, 02:23 PM   #22
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Removing Silicone Caulk...


Just finished removing very old silicone sealant from a flat laminate top. First scrapped most of the glue away with a sharp scraping blade on a handle. A low angle is best to protect the surface and you might have to use a sawing motion if it is tough to get up.

Once that was done I tried some Goof Off solvent and a tuffy pad on the residual. It came off quick with a clean surface left behind. A warning, Goof Off does have a strong solvent smell (xylene) and is flammable, so keep your work area ventilated.

One other solvent I have used that works for this kind of thing is T10 solvent from the marine trades stores. It is a mixed solvent used to clean surfaces. It too is flammable and has it's own peculiar smell.

Last edited by jherndon; 05-13-2010 at 12:24 PM.
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Old 05-31-2010, 01:35 PM   #23
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Removing Silicone Caulk...


After my VERY handy fiance installed our new stainless sink (using silicone caulk), we couldn't shape or remove the bead from either the countertop or the sink- it just smeared everywhere and of course dried to a thick rubber-like substance. So, we read all of your posts and tried everything- but had to use caution with abrasive tools (razors, drill heads, etc)...so he got frustrated and grabbed the paint thinner (mineral spirits) and it worked like a dream with minimal effort!! (This is happenning as I write, so I will have to report back on whether or not we ruined the finish on the sink or the crappy old laminate countertops).

PS: the old porcelain over cast iron sink was a nightmare to get out- heavy & STUCK. So, we used a car jack to push it out- FYI!!! Worked great to break the seal.
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Old 06-15-2010, 02:03 PM   #24
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Removing Silicone Caulk...


While there are many products that will remove cured or un-cured silicone, they will also damage the surface the silicone is attached to. That is the problem. You'd never use acetone to remove a bead of silicone from a painted surface. It may work diluted on a granite top but do not get it on anything else! And Never use it on Solid Surface (Corian, etc.)Someone else on here mentioned DSR-5 Silicone & Adhesive Remover. This is a product that works as advertised and will not harm the surface that the silicone is stuck/smeared on.

Last edited by Scuba_Dave; 06-16-2010 at 02:54 PM. Reason: removed advertising links
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Old 06-16-2010, 02:23 PM   #25
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Removing Silicone Caulk...


Acetone will remove all silicon base products and will not damage porcelain tubs. I have used it on many of projects. Tubs, aluminum, windows, ect. Apply a small amount on cloth rag and just rub. With in seconds it breaks the bond and you are left with clean area to apply new silicon almost instantly because of how fast the acetone evaporates. Good luck on all your projects.
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Old 07-15-2010, 09:11 AM   #26
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Removing Silicone Caulk...


I've read all the suggestions for removing silicone caulk from fiberglass. Thanks everyone. Does anyone know where to buy DSR 5?
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Old 07-15-2010, 06:26 PM   #27
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Removing Silicone Caulk...


Yup....silicone....I stay away from that unless one is building an aquarium, I guess.

There is no known safe solvent that dissolves silicone. Only hot hydrofluoric acid will. Never approach hydrofluoric acid, period.

I was skeptical of one product sold at home depot .....I returned it. Rub, rub, rub, as mechanical abrasion, as one member here explained, can work. Use the dreaded stuff (silicone) only as a last resort.
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Old 08-21-2010, 03:29 PM   #28
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Removing Silicone Caulk...


If you are working on a porcelain surface, the quickest and easiest way to remove old cured silicone or silicone caulk is to use a pumice stone. You can find this at any DIY store or department store that has a cleaning section. It's usually called a "Pumie" stone. Get it wet and make sure it stays wet. Just go at it like an eraser. It won't damage the surface. Remove as much silicone as possible with a scraper, then pumie the rest. I removed residual silicone from around a removed shower door in about ten minutes with absolutely nothing left behind. It was easy to wash down and dry because there are no leftover chemicals. Good luck!
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Old 11-21-2010, 05:24 AM   #29
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Here are some alternate choices under "silicone adhesive removers."
http://cgi.ebay.com/ws/eBayISAPI.dll...=263602_304642
http://www.amazon.com/gp/offer-listi...&condition=new
http://compare.ebay.com/like/2305511...=263602_304662
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Old 11-21-2010, 06:49 AM   #30
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Removing Silicone Caulk...


I liked the post that claimed "concentrated acetone" did the trick. LOL

"I dunno my acetone was diluted and weak, should I buy a concetrated grade?"


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