I know there are other threads dealing with the topic of garage flooring. I'm not really interested in Race Deck or tiles. I'm going with a full flake multi-layer epoxy (1/4" flakes). I've researched it and talked to local installers. I'm trying to avoid plasticizer migration which happens when the plasticizers in tires leach and cause darkening in the top coat.

Here's the issue. I'm finding the top coat is where the issue lies. The most common top coats are epoxy and urethane. Epoxy is the best choice for minimizing the tire spots, but it doesn't have UV protection so it will 'amber' over time from the sunlight exposure. Urethane has the UV protection, but is more susceptible to plasticizer migration.

Is this research flawed? What has been your experience?

I definitely want my garage floor epoxied and I will deal with the tire spotting if I have to. I just wanted to know the facts before proceeding.

Thanks in advance.