Can I paint Sikalfex Concrete Fix with a 2-part floor epoxy system?

Yes Sikalfex Concrete Fix can be painted with an epoxy floor based on the manufacturer recommendations. Do not use coatings which have high solvent content. It can be painted after a full cure (5 to 7 days). One thing to note is that the sealant will flex if there is movement in the slab. Epoxies are rigid so they will crack.