Hot Coat cured to a Matte finish, not shiny. Why?

General Discussion
1

I finished a hot coat on my current project using MAS system epoxy.  The bottom came out normally, and cured to a shiny finish filling in the weave.  However, the top of the board came out differently.  I think it blushed, as I could see a milky blur that made the graphics look distorted, and now that it’s cured, it came out to a matte finish that still fills in the weave, but isn’t shiny like normal.  It looks like a finish that I’d expect after sanding, but I haven’t sanded anything yet.  It cured in very high heat in the sun.  Is this the reason why it came out this way?  Will I have any problems sanding it?  Or should I barely sand it at all?  I may just sand the bottom to get it smooth and lightly sand the top to get rid of any nicks or bumps. 

 

any ideas? I’m new to this…

 

Thanks

2

if you work too much with epoxy during glassing it becomes a milky color and won't have that clear finish. maybe that happened?

3

Yes that might have been it too. 

4

With any luck you can sand it and the gloss coat will take care of it.  FWIW most coatings (UV poly excepted) do best out of direct sun.   Was it still curing outside when the temperatures dropped maybe triggering a layer of condensation to form on it?  I had a leak that allowed water drops to land on an epoxy board as it cured.  It left a whitish water stain on the surface.  It sanded clear.