Date: 1/18/2002, 8:24 pm
If you add about 20-30% by volume of Cabosil, it will be less likely to cause runs and drips. So fewer coats will be required. But that doesn't do a darn thing about the extra weight. The main problem here is getting enough pigment in the epoxy to make it opaque. And then it still needs UV protection.
A better solution for opaque white would be to use aliphatic polyurethane. It adheres extremely well to epoxy - in fact epoxy is the preferred primer. It goes on really thin, maybe .75-1.0 mil (.00075-.001"), is tough as nails, has excellent opacity, and supplies a great deal more UV protection than varnish. I painted the hull of a S&G with this in '95, and haven't needed to touch it up yet.
: I've been using white pigmented epoxy on paddle tips, but I don't think I use
: in on a boat, for one reason: weight. In order to get it to be opaque, you
: have to apply it quite thick, which would add considerable weight to the
: boat. You would also have to apply it in several thin coats, in order to
: avoid runs. Paint would be a lot lighter and easier to apply.
: Additionally, although the pigment should protect the inner layers from UV,
: the outer surface would still be subject to UV degredation unless you
: apply paint or varnish over it, adding more weight, expense and work. All
: in all, it seems like more hassle than it's worth.
Messages In This Thread
- S&G: Primer or not under paint?
Jay Babina -- 1/18/2002, 1:33 pm- Re: S&G: Primer or not under paint?
Nick Schade - Guillemot Kayaks -- 1/18/2002, 2:07 pm- Re: S&G: Primer or not under paint?
Jay Babina -- 1/18/2002, 2:19 pm- Re: S&G: Primer or not under paint?
Nick Schade - Guillemot Kayaks -- 1/18/2002, 9:15 pm- Re: S&G: Primer or not under paint?
Myrl Tanton -- 1/18/2002, 2:49 pm- Re: S&G: Primer or not under paint?
David Ross -- 1/18/2002, 3:34 pm- White pigmented epoxy
Brian Nystrom -- 1/18/2002, 5:01 pm- Re: White pigmented epoxy
LeeG -- 1/19/2002, 12:53 am- Re: White pigmented epoxy
Pete Rudie -- 1/18/2002, 8:24 pm - Re: White pigmented epoxy
- Re: White pigmented epoxy
- Re: S&G: Primer or not under paint?
Canary -- 1/18/2002, 2:53 pm- Al powder
Sam McFadden -- 1/18/2002, 6:30 pm
- White pigmented epoxy
- Re: S&G: Primer or not under paint?
- Re: S&G: Primer or not under paint?
- Re: S&G: Primer or not under paint?
- Re: S&G: Primer or not under paint?