Fire caulk (from what I've learned) is only required in holes that have been drilled from one unit to the next unit. Example: If you have an apartment, where you have someone living above you,and holes are drilled between floors,then you would have to fire caulk those holes made between units. Note: if the the floors in the unit are in the same dewelling (meaning: the aparment has and upstairs, and down stairs), then you would only use foam.
