It doesn’t matter who installed the floor, the damage was caused by the failure of the Owners Corp to hire a competent builder and it is up to the owners corp to compensate you. They could then pursue the builder through the thbuilder’s insurance but that is their problem, not yours.
Also, it’s worth making the point that this ‘unapproved” floor is also their responsibility because they or their predecessors did nothing about the floor when it was going in under the previous owner who installed it.