A flood, which is defined as, when a property is inundated by overflow of inland and tidal waters, unusual or rapid accumulation of surface water from any source or mudflow, is a loss that is excluded from Commercial Property and Homeowners policies. In order for this peril to be covered, you will need a flood insurance policy.
In the event of a pipe break, you will be dealing with the issue of provisions in your insurance policy that limit or preclude coverage. If your insurance company determines after its investigation that these provisions apply they will deny the claim if coverage is precluded or provide you with funds that are not sufficient to cover the loss if there is a coverage limitation. Roof leaks also contain similar provisions that your insurance company will use to not fully cover your claim.
In any of these instances, because water is involved, there is the potential for the building to be contaminated by a mold infestation. Like pipe breaks and roof leaks, there are provisions in your insurance policy that limit and in some cases preclude coverage for mold contamination. If your insurance company determines after its investigation that these provisions apply, you will be faced with the need to perform a mold remediation without the resources to do it properly.
In any loss that involved water damage, your insurance company requires you to make efforts to protect your property from further damage. Not only is it a requirement under your policy, it is also a good idea to immediately do so in order to lessen the possibility of mold contamination.