The first of the two commercial roofing photos shows roof repairs done around a leaky AC unit on a low-slope industrial metal roof. You can read more about that by clicking the photo, or clicking here.
The second of the two commercial roofing photos shows single-ply (specifically, TPO) repairs done on the same industrial building. Again, read more by clicking on that photo, or by clicking here.
When you are doing commercial roofing repairs, make sure to get the job done right. If you don’t, you can even end up creating more leaks, as the property owner did in the photo below (the weird “metal pan covers” are neither conventional practice, nor did they fix the leaks [and they even created more leaks!]).