Don't forget. Even if you do have a claim against the seller or the
agent, you have to do everything you can reasonably do to mitigate
damages. To make the damage to the house and the cost of repairing it
as little as possible. That's the law. I know your intention is not
to let it rot, but if you get depressed or something, or thing someone
else will pay, you will be responible for anything that got damaged
that wouldn't have if you had made diligent efforts to prevent the
added damage. So tarps on the roof, even if you have to pay someone
to do it, unless you can stop it your self from inside the attic.
Depends on where all it is leaking.