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Author Topic:   Removal of epoxy overflow on deck repair
Snowflake2002 posted 07-23-2002 10:13 PM ET (US)   Profile for Snowflake2002   Send Email to Snowflake2002  
My son had a batch of approved epoxy from West Marine, and either the mix syringe was missing the ratio or water got involved. Now I have hardened yellow epoxy smeared over the blue decking of a 1970 13' classic. How do I remove the epoxy with the least damage to deck. I have considered using a dremel with a small sanding or grinding attachment.
jimh posted 07-23-2002 11:58 PM ET (US)     Profile for jimh  Send Email to jimh     
You do have a problem: the epoxy is probably much harder than the gelcoat. I learned this myself that hard way. When you fill a hole with epoxy, leave the epoxy below the gelcoat level. Otherwise it is hard to sand off th epoxy without removing twice as much gelcoat from the surrounding area.

I would carefully mask off the area you need to work on and take it very easy when sanding the epoxy away.

JohnAz posted 07-24-2002 12:33 AM ET (US)     Profile for JohnAz  Send Email to JohnAz     
try using an sice pick and get under the epoxy,,,if you can get some small cracks in it" it is brittle" you can slowly chip it away
JohnAz posted 07-24-2002 12:34 AM ET (US)     Profile for JohnAz  Send Email to JohnAz     
ICE pick
whaleryo posted 07-24-2002 10:46 AM ET (US)     Profile for whaleryo  Send Email to whaleryo     
I overfilled a screw hole with epoxy by accident. After it hardened, I drilled a small pilot hole in the middle, then drilled out the excess to about 1/8" below the gelcoat with a 1/2" metal bit. It worked well and I was able to fill it nicely with gelcoat patch.


OutrageMan posted 07-24-2002 12:38 PM ET (US)     Profile for OutrageMan  Send Email to OutrageMan     
I believe that one of my woodworking magazines mentioned that epoxy is chemically reversible. I would go the Gougon (spelling) website and have a look.


hargravesg posted 07-24-2002 05:58 PM ET (US)     Profile for hargravesg  Send Email to hargravesg     
epoxy is plastic and becomes pliant at relatively low temprature; if the gel coat is in good condition you can use a heat gun, very carefully and very sparingly to soften the epoxy. however, if you overheat the area you will damage to boat's core
Jay A posted 07-24-2002 07:38 PM ET (US)     Profile for Jay A    
I agree with hargravesq, A heat gun will do the trick. It will soften the epoxy but will only "pry" off while hot. Use a dental pic or a sharp ice pic to gently lift the epoxy away. This method is used when we had "overspill" during our manufacturing process where I worked. Work small areas at a time. good luck!
AC posted 07-28-2002 10:34 AM ET (US)     Profile for AC  Send Email to AC     
the WEST SYSTEM Fiberglass Boat Repair & Maintenance manual, p. 68, recommends this:
"Removing cured epoxy coating. Use a heat gun to soften the epoxy (200 degrees F.) Heat a small area and use a paint or cabinet scraper to remove the bulk of the coating. Sand the surface to remove the remaining material. Provide ventilation when heating epoxy."

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