Can you layer epoxy of different brands?

Advice
#1

I have the first coat of epoxy down on the deck interior of a Petrel SG, and want to apply a fill coat inside of 72 hours from initial application.



I’m using CLC-supplied MAS epoxy and am short on hardener – I’m not sure I have enough remaining for a fill coat. I live on the west coast, where MAS is hard to come by. This is the land of System 3, and I cannot get a resupply of MAS inside of 7-10 days.



Question to you is whether I can use System 3 for the fill coat? Both epoxies are 2:1, and know not to mix and match resins and hardeners between them, but is it viable to layer one over the other?



If not, I’ll have to await a resupply and sand between coats.



Thanks in advance…

#2

If it’s interior not going to matter
You can get different coloration as the other brand dries when using different resins on multiple layers. If it’s inside the boat and doesn’t show I don’t think it’s an issue.

#3

Fill coat…
If you already have the fabric coated a fill coat will not add any strength and will only add weight. I never used a fill coat on the interior as it’s only cosmetic.

#4

of course

– Last Updated: Sep-15-16 10:14 PM EST –

taking loose paint of the van's plywood deck roof rack found a delaminated weak spot, went into the garage looking for shelved epoxy coming up with Wal Locktite plastic epoxy. Into the hole.

A trip past West Marine reeled in Gflex and after a long lunch scraped the hole larger, Gflexed n added a nice well laid out 2 layer glass patch.

Are the two epoxies compatible ? ...I dunno duh

In process did I question the mating ? Briefly.

placing them together relies completely on the lack of negative press.

However now that you mention this I look and yes there's an answer from MIT

http://www.google.com/#q=incompatible+commercial+epoxies



#5

Agreed on the inside
It does make some sense to fill where your heels will be when paddling though. Other than that it doesn’t make much sense on a closed deck hull. On the other hand, I have switched between System 3 & West with no problems. I don’t have any experience with MAS though.