“We have a 100,000 SF single-ply roof that was leaking quite a bit and we were about to replace it when at the last minute we decided to get an infrared survey. As it turned out, only 4 percent of the roof was wet underneath. We replaced the membrane and a few areas that were wet (one large one and about 15 small ones). We calculated that we saved over half of the original estimate by doing an IR survey that cost less than two thousand dollars.”