It is currently October 22nd, 2019, 11:22 am

All times are UTC - 5 hours




Post new topic Reply to topic  [ 6 posts ] 
Author Message
PostPosted: April 17th, 2019, 4:43 pm 
Offline
User avatar

Joined: March 30th, 2010, 4:10 pm
Posts: 324
Location: Ringwood, NJ
Any experience on how to clean old contact cement from fiberglass to install new knee pads? Thanks.


Top
 Profile  
 
PostPosted: April 17th, 2019, 5:43 pm 
Offline

Joined: October 27th, 2003, 1:41 pm
Posts: 136
Location: Fairbanks AK
First try liquid dishwashing detergent and/or scrubbing with Brillo. If that does not work try common solvents: paint thinner, acetone, paint remover. Be careful, some solvents may attack the fiberglass.

Douglas


Top
 Profile  
 
PostPosted: April 17th, 2019, 6:32 pm 
Offline

Joined: June 28th, 2001, 7:00 pm
Posts: 1671
Location: Freeland, Maryland USA
A fresh coat of contact cement works well to take most of the residue off. Just paint it on, wait until it gets tacky and roll/rub it around like a giant eraser. Wear gloves.


Top
 Profile  
 
PostPosted: April 17th, 2019, 8:36 pm 
Offline
User avatar

Joined: August 16th, 2011, 8:02 pm
Posts: 211
Location: Edmonton area
I did the same on my canoe a few months ago.

I used acetone (Canadian Tire), a small plastic scraper, and the edge of my thumbnail, and it went pretty well. But my boat is made of Kevlar, not fibreglass, and so I'd advise trying it on a small area first to see if it would cause any damage to yours; but I really doubt that it would.

Good luck.

_________________

Ubique



Top
 Profile  
 
PostPosted: April 18th, 2019, 12:01 am 
Offline
User avatar

Joined: June 20th, 2001, 7:00 pm
Posts: 3466
Location: Toronto, Ontario Canada
Be very stingy with Acetone and be prepared to do a lot of scraping. If you use enough to actually "melt" the residue you will likely be "melting" the fibreglass (actually the epoxy).

Personally if the knee pads are going in the same location I wouldn't bother trying to remove much of the old cement other than any big globs.

_________________
"What else could I do? I had no trade so I became a peddler" - Lazarus Greenberg 1915


Top
 Profile  
 
PostPosted: April 18th, 2019, 2:42 pm 
Offline
User avatar

Joined: March 30th, 2010, 4:10 pm
Posts: 324
Location: Ringwood, NJ
Thank you everyone for help! I'd not dare to use any solvents potentially dangerous to the hull material and will probably follow recped's advice putting new cement on top of the old one.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 10 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group