Making reasonable repairs is actually a duty that the insured has agreed to in their insurance contract. It is important to abide by this duty and make reasonable repairs to insure that the damage will be covered.
The cost of making reasonable repairs to will be reimbursed by the insurance company. The insured needs to keep receipts for reasonable repair purchases. In addition, as long as the insured attempts to make reasonable repairs, even if they are not successful, this will fulfill the required reasonable repairs duty.
Making reasonable repairs to damage can be as simple as putting a tarp over an exposed roof or turning off the water if a water pipe is damaged. Reasonable repairs do not have to be permanent repairs but instead are intended to be temporary until a permanent repair is available.

