Getting Home Insurance or Warranty to Pay for things

[Pierre E.]

What are the best ways to leverage your landlord property insurance policy for repairs?  (Either new purchase, or longterm ownership property)

For example, if roof need to be replaced or piping needs to be replaced how are you maximizing its proper usage? I don't want to abuse anything but also don't want to leave money on the table when I shouldn't be. 

Same with Home Warranty - Do you even find it helpful to get one, and when does it tend to help? 

Thanks BP Fam in advance for the insight and feedback. Trying to fine tune my investing!