We agree, and so if you're planning on building an extension, here is our guide to flat roof additions, including all their pros, cons, nuances and your design options. What is a flat roof extension?

Building owners love them for their affordability ... It features an entirely flat roof that is not visible from the ground. Among its benefits are ease of construction and affordability.

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.