We had some minor cracks and holes in the concrete tiles on our roof being repaired. We got a recommendation to replace the flashing on joints of the house (ten of them) because they have worn out. Cost is $1200 labor plus $400-500 in material. The new flashing should last 10-20 years. The roof is now just about 40 years old the flashing is the original. We are not experiencing any leaks. He sent us some pics, but we are not sure whether to proceed or just keep what we have until we experience a leak or decide to replace the entire roof in the future. Any thoughts on whether we should do this?