While flat-roof systems have an official lifespan of about 25 years, anyone who actually has a flat roof knows you’re lucky if you get a decade out of them before they start to leak and ...

By Tom Schardin, Staff Writer The roof at St. John the Baptist Catholic Church was starting to leak, not to mention the 25-year-old building has had its share of lightning strikes over the years.

A Slovenia-Norwegian research group has investigated how fire could propagate in PV systems deployed on flat roofs and has found that the gap distance between the panels and the roofs, as well as ...