Thank you for your answers. As I understand most of you, I need a roller with a short nap.
The rollers from West System might be an option. But I will probably have to order it online. They are available i Danish online shops. Actually it seems like West System is the only epoxy brand sold both in US and Europe.
Mohair rollers was also mentioned. I can buy them locally. But I have never seen them mentioned on this forum before. Does others have experience with Mohair rollers?
About compatibility with epoxy: Are there roller materials I should avoid? And does epoxy contain solvents?

Will 1 roller per coat really be enough? I'm a little afraid that remains from the first batches will harden in the roller before I finish. Or will all of it be replaced with newer batches during the application?

Palle Dam