Old silicone removal? - SailNet Community
 
LinkBack Thread Tools
post #1 of 6 Old 12-02-2006 Thread Starter
Junior Member
 
Join Date: Oct 2006
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Old silicone removal?

Hi: Does anyone have experience with removing old silicone sealant. I've got a new (old) boat that has copious amounts of old cured sealant slopped around fittings, hatches, instruments etc. that doesn't want to budge. I have seen a couple of products advertised that will apparently dissolve and remove the old stuff, but am concerned about damaging the gelcoat. Any tried and true suggestions? Thanks!

Alex
AlexSchmoll is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 6 Old 12-02-2006
ASA and PSIA Instructor
 
Join Date: Apr 2000
Posts: 3,588
Thanks: 7
Thanked 25 Times in 25 Posts
Rep Power: 16
 
Silicone usually isn't hard to get off, you can use a scrapper or even a fingernail. However, if yours is difficult or resistant, try this stuff

http://www.boatersworld.com/product/376970950msk.htm
sailingfool is offline  
Quote Quick Reply Share with Facebook
post #3 of 6 Old 12-02-2006
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 15 Times in 12 Posts
Rep Power: 14
         
Silicone generally isn't all that strong an adhesive...it generally is used to make gaskets rather than work as a sealant due to its weak adhesion properties. The one time you will generally need to use a chemical cleaner is to get rid of the residues that it leaves behind. The residues can cause problems with paint adhesion and usually will leave "fisheyes" in the paint.

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #4 of 6 Old 12-03-2006
Member
 
Join Date: Nov 2002
Posts: 54
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 13
 
I haven't had to take silicone off a boat, but did have to remove it from a camper. The project was resealing a leaking window, and a previous owner had removed the rather sloppily resealed it with silicone. Couldn't get the silicone to let go of the aluminum window frame or the skin of the campler. Tried several solvents (mineral spirits, acetone, etc.) and settled on Interlux 222 (their fiberglass dewaxing solvent). It caused the silicone to lose adhesion and come off nicely, though I want through a lot of 222 and shop towels. The 222 evaporated so quickly that I had to keep re applying it.

Also, I found a silicone remover at my local Ace hardware recently. Bought some ($15 for a caulking gun size tube), but haven't tried it yet.

Mark
BeneteauMark is offline  
Quote Quick Reply Share with Facebook
post #5 of 6 Old 12-03-2006 Thread Starter
Junior Member
 
Join Date: Oct 2006
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Thanks all for the suggestions -- the residue is nasty and needs some kind of help other than scraping.

Alex
AlexSchmoll is offline  
Quote Quick Reply Share with Facebook
post #6 of 6 Old 12-09-2006
BOHICA
 
Join Date: Nov 2006
Location: Chicago Suburbs
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Silicone Removal Solvent

Last year, I had to remove the forward section of my Hunter 34 cabin sole that was entirely set in silicone. What the guys are saying about taking the bulk of it off is right on. It comes off relatively easy. I used a 4" blade razor blade type wallpaper scraper and essentially peeled it all off or at least cut the heavy stuff off.

The big problem is you MUST get all the residue off... the stuff you can't see. If you don't, your new caulking will not stick. Acetone, mineral spirits, alcohol, MEK and other petroleum based solvents will not touch it. It has to be squeaky clean like window glass.

I used Contractors Grade De-Solve-It. Ace has it in two size trigger spray bottles. It looks a little like Goo Gone. Spray it on and let it sit for awhile. Then you can use a Scotch Brite pad and/or scrub brush to remove it. It rinses with water. You may have to do a couple of applications to make sure nothing is left.

Bob
BigBoatSailor is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
34 O'Day Fuel Tank Removal sailingcal21 O'Day 6 12-16-2008 12:16 AM
Helm removal bsfree Gear & Maintenance 7 08-13-2006 05:23 PM
Removing Silicone seatrek Gear & Maintenance 3 05-18-2004 05:59 AM
Silicone bottom paint? VIEXILE Gear & Maintenance 2 05-16-2002 10:30 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome