  Cazorla et al. [preceding comment] criticize our recent results on the
high-PT phase diagram of CaF2 (Phys. Rev. B 95, 054118 (2017)). According to
our analysis, Cazorla et al. have not converged their calculations with respect
to simulation cell size, undermining the comment's conclusions about both the
high-T behaviour of the P-62m-CaF2 polymorph, and the use of the QHA in our
work. As such, we take this opportunity to emphasise the importance of
correctly converging molecular dynamics simulations to avoid finite-size
errors. We compare our quasiharmonic phase diagram for CaF2 with currently
available experimental data, and find it to be entirely consistent and in
qualitative agreement with such data. Our prediction of a superionic phase
transition in P-62m-CaF2 (made on the basis of the QHA) is shown to be
accurate, and we argue that simple descriptors, such as phonon frequencies, can
offer valuable insight and predictive power concerning superionic behaviour.
