This is a short video of a tile roof leak repair we did. This teaches you some of the repair techniques and methods your roofer needs to do in order to make your roof repair last.
The most expensive part of roof repair is having to repair the same area more than once. Most of the roofs we fix have been repaired multiple times in the same area.
Hire a roofer to do it right the first time is most likely the most expensive way up front but in the long run you will save money.