I
Italy
Let's do this way. on the mainland the flexion is the same between epoxy and ucp.Mapei UK and bal said epoxy less flexible than modified cement grouts.
Are we any the wiser!?
on the islands, ucp is more flexible than epoxy.
joking aside, I believe the technical mapei I called today,
that said: no difference, only difference epoxy remains attached
ucp exits from the lines. (and it seems to me the most sensible answer.
you, believe who you want. haha 😉