Silicone Caulk Removal - General Discussion - Contractor Talk

Silicone Caulk Removal

 
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Old 09-02-2014, 02:56 PM   #1
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Silicone Caulk Removal


Does anyone have any suggestions on how to get silicone caulk off FRP (Fiberglass Reinforced Panels)

I had one of my guys go caulk some sinks in a restaurant and he almost painted the walls with it. 100% Silicone

It's like 2" above the sink and finger marks everywhere

I'm not against chemicals, I don't know if heat will warp the FRP (Mite loosen the adhesive holding it up

Thanks
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Old 09-02-2014, 02:58 PM   #2
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Re: Silicone Caulk Removal


Oh sh!t....they make a softener but I've never tried it.

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Old 09-02-2014, 04:24 PM   #3
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Re: Silicone Caulk Removal


I'd try to use some kind of plastic scraper or plastic razor blades (which I've never used). Something that's stiff and sharp enough to get under it without scratching.

It seems like you should be able to scrape it with the right angle and pressure but silicone can bond pretty tight to some materials.

Good luck!
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Old 09-02-2014, 04:35 PM   #4
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Re: Silicone Caulk Removal


Try fingernails for the big stuff and mineral spirits for the little bits. I wouldn't try heat or a metal razor (don't know about plastic kind) on FRP.

Last edited by aptpupil; 09-02-2014 at 04:38 PM.
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Old 09-02-2014, 05:13 PM   #5
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Re: Silicone Caulk Removal


I would use some sort of a blade and mineral spirits.
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Old 09-02-2014, 06:03 PM   #6
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Re: Silicone Caulk Removal


Goof Off works pretty good , had some on a vinyl window the other day cleaned it right off. I used the spray can one.
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Old 09-02-2014, 06:46 PM   #7
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Re: Silicone Caulk Removal


Motsenbocker's LiftOff (Home Depot carries it)....best stuff I've ever used. Caulk, silicone, foam sealant remover. Typically works within a few minutes, and never had a problem ruining other surfaces.
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Old 09-02-2014, 07:20 PM   #8
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Re: Silicone Caulk Removal


rservices:

Rip some plastic laminate into 1" wide strips. When you break them, they'll create edges sharp enough to scrape the silicone, but soft enough to not scratch the FRP. Snap off another when the edge gets dull. Use this with the previously mentioned solvent.
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Old 09-02-2014, 08:42 PM   #9
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Re: Silicone Caulk Removal


I've found with 100% silicone if you take your finger and rub it with pressure it'll break the seal and come of pretty easily. Almost all the caulking I do is against Frp and it'll break away fairly easily. I've seen others use goof off with good results. I'd maybe try a spot out if site down low to see if it would discolor at all, but I doubt it does with Frp.
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Old 09-03-2014, 12:10 AM   #10
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Re: Silicone Caulk Removal


Good advice here,

2" up the wall tho? Man, I start feeling bad if my beads 1/4".
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Old 09-03-2014, 12:16 AM   #11
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Re: Silicone Caulk Removal


Home cheapo sells plastic putty knives. I've used these with great success when I removed the vinyl lettering from my truck. It took the lettering off without scratching the paint. I also used the bug and tear remover you get at pep boys. The combination may be the ticket.
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Old 09-03-2014, 01:02 AM   #12
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Re: Silicone Caulk Removal


Look for 3M silicone remover in the green aerosol can. Nothing works better and it leaves no residue. I use it for prepping showers for resiliconing. It dissolves cured silicone and quickly cleans up new silicone with no rinsing required.

It is a bit hard to find these days, but should be online. This reminds me, I need some.

I just poked around and couldn't find it. I am on my phone which makes it tough to really surf.

The other one I would use is Dow Corning OS2. It also leaves no residue. It doesn't dissolve the cured silicone as well, but it softens it enough it will pull off, then you can use it to clean the remainder off. The aerosol spray is the secret. All the other sprays get messy as you squirting them on.

Good luck. You need to train your guy on proper procedures which include taping the joints to make them look cleaner and contain the mess. Once you get silicone on your hands it is over. That stuff just gets messier and messier.
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Last edited by VinylHanger; 09-03-2014 at 01:16 AM.
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Old 09-03-2014, 07:05 AM   #13
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Re: Silicone Caulk Removal


I never tape to silicone. Lay a bead, mist it with Windex, spit on your finger, wipe it and it's perfect. Wipe off the over sprayed Windex and you're done.
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Old 09-03-2014, 09:40 AM   #14
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Re: Silicone Caulk Removal


Quote:
Originally Posted by Kowboy View Post
I never tape to silicone. Lay a bead, mist it with Windex, spit on your finger, wipe it and it's perfect. Wipe off the over sprayed Windex and you're done.
The windex keeps it from sticking to the adjacent surface?



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Old 09-03-2014, 11:47 AM   #15
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Re: Silicone Caulk Removal


Soapy water works to. Dip your finger in and use light pressure. Spit works but it's not an endless supply. for the soapy water i use about 25% soap and 75% water. Keep a rag handy to clean your finger every once and awhile. Figured this was all taught in caulking 101.

IDK about fiberglass but every other material i've removed silicone off of I just grabbed an edge and carefully pulled it up/out.
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Old 09-03-2014, 03:45 PM   #16
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Re: Silicone Caulk Removal


Quote:
Originally Posted by Seven-Delta-FortyOne View Post
The windex keeps it from sticking to the adjacent surface?



Delta
Yep. Like a champ.
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Old 09-03-2014, 04:19 PM   #17
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Re: Silicone Caulk Removal


Something in the windex keeps it off other stuff and leaves a very smooth bead. They also have caulk smoother in a spray bottle and caulk-ez. Probably only found online
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Old 09-04-2014, 01:38 AM   #18
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Re: Silicone Caulk Removal


Quote:
Originally Posted by 1985gt View Post
Soapy water works to. Dip your finger in and use light pressure. Spit works but it's not an endless supply. for the soapy water i use about 25% soap and 75% water. Keep a rag handy to clean your finger every once and awhile. Figured this was all taught in caulking 101.


Uhm... Yeah, I know.

I was asking about Windex. Not soapy water.

Soapy water is what I use.

Hadn't heard of the Windex.











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Old 09-04-2014, 07:18 AM   #19
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Re: Silicone Caulk Removal


Quote:
Originally Posted by Seven-Delta-FortyOne View Post
Uhm... Yeah, I know.

I was asking about Windex. Not soapy water.

Soapy water is what I use.

Hadn't heard of the Windex.

Delta
You can even use plain water, but the soap give it a little more body to keep the slime in place. Silicone won't stick to anything that's wet.

The only caveat about spritzing with windex or soapy water is you have to pull a nice clean bead with your caulking gun. If you tape the joint any fool can make it look like a million bucks.
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Old 09-04-2014, 11:07 AM   #20
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Re: Silicone Caulk Removal


I would contact the manufacturer

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