274The statutory conditions set out in Part IV of this Act, except where inapplicable to the nature of the risk, apply to weather insurance contracts together with the following additional conditions:
(a)
the insurance may be terminated by the insurer by giving seven days notice to that effect, and
(b)
the insurer is not liable for loss or damage occurring to buildings or structures or to their respective contents where they have been weakened by alterations made subsequently to the contract, unless permission to make such alterations was previously granted in writing signed by the insurer or its authorized agent.