410 fairing, do I really need to coat again with epoxy?

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dndrich
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Posts: 164
Joined: Tue Jun 07, 2011 7:13 pm

410 fairing, do I really need to coat again with epoxy?

Post by dndrich »

SCAMPers:

My build is really going well right now. Having lots of fun. The hull is close to getting primer and paint. As I sand now, I have a few spots I want to fair a bit more with 410 microlight. It says in the West Systems manuals that it is best to seal the stuff after dry and sanded with another coat of epoxy. Do I really have to do that? Since I am such a beginner I see these defects in the hull a bit late, and have to add some fairing compound late. So, what is the story with fairing with 410?
Daniel
SCAMP #330 Wildflower
Sebastopol, CA USA
Peter E
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Joined: Fri Jun 24, 2011 1:17 pm
Location: USA Midwest Wis.

Re: 410 fairing, do I really need to coat again with epoxy?

Post by Peter E »

Yes, Seal it with epoxy.
dndrich
Regular Contributor
Posts: 164
Joined: Tue Jun 07, 2011 7:13 pm

Re: 410 fairing, do I really need to coat again with epoxy?

Post by dndrich »

Dang. Alright, guess I'm gonna do it! I'll get this boat finished yet!
Daniel
SCAMP #330 Wildflower
Sebastopol, CA USA
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PAR
Regular Contributor
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Joined: Thu Apr 27, 2017 5:12 pm

Re: 410 fairing, do I really need to coat again with epoxy?

Post by PAR »

The reason you need to overcoat fairing compounds and other light weight filler applications is these tend to be hydroscopic. The overcoat will seal them down and harden up the surface a bit too.
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