What's the name of this phobia?

What word * refers to the fear that ceilings will fall on you?

Example: John's * made him decide to live in a bungalow, because he thinks one ceiling falling on him would not be sufficient to kill him, but two or more would.

If you Google for "ceiling phobia," a condition called altocelarophobia seems to be a thing:

alto- (high) celaro- (ceiling) phobia (irrational fear)

an irrational fear of high ceilings

So, by analogy:

obcursu- (falling) celaro- (ceiling) phobia

Behold obcursucelarophobia: an irrational fear of falling ceilings.

May be not exactly what you are looking for, but Anablephobia is some what related.