A cheap roof repair is one that works. An expensive roof repair is a cheap one that doesn't. First find out why there is a leak in the first place. Then repair the problem at the source. Typical leaks are caused by cracked (old) caulking, flashings that have become dislodged, premature wearing out of materials, poor workmanship, etc. The solution will depend on what the cause is.

First we need to know what type of roofing material is on your roof and where on the roof this spot is located. This will help me, help you?