Thanks a lot!
@ichwillauch: The handling was easy, but you have to seal the edges very carefull, otherwise the resin will flow relentlessly through the tiniest holes. I ruined a part of the floor of my garage that way.
No bubbles, no heat. The stuff was a bit expensive, about 59 € for 3 litres including shipping, but I am absolutely satisfied with the results. Took about 3 whole days to dry.