Re: Can you mix brands of epoxy
most anything with a chemical makeup can be tailored to specific uses and may not be compatible with compounds in other products. The key most times is to make sure that the surface that you are bonding to has FULLY cured. If it is still leaching off gasses from the curing process, you take chances with those gasses causing problems with the next layer applied.
Sometimes seemingly compatible products just aren't. We are dealing with this on one of our jobs currently. It's just been a mess, mostly because the people involved didn't do enough research to make sure the two components we were using were compatible...namely a latex based paint to make a floor white, with a water based finish over the top of it...the waterbased finish wouldn't adhere to the latex based paint.
That being said, two products designed for the same application are going to have a much higher probability of being compatible, just for the sake of wanting the product to be used for said applications. Epoxy resin for fiberglass layup should be compatible with epoxy from a different manufacturer for the same purpose. However, as said, the best bet is to ask the manufacturer if they know of any specific problems you might or might not encounter using their product in the manner you've designed. They are the experts ( or should be ) in regards to this.
