10-03-2015, 11:32 PM
(This post was last modified: 10-03-2015, 11:34 PM by BuildingScout.)
(10-03-2015, 11:29 PM)tomh009 Wrote: Not just the steel I-beams, but the other challenge with flat roofs is drainage: snow melts and sits on the roof, eventually it will find some way through the roof, and presto, you have a leak into the house. Back in my homeland, lots of flat-roof houses were built in the 70s; by now, most of them have been converted to conventional roofs, due to the snow and leaking issues.
I agree, but it can be done. After all most commercial buildings have flat roofs without a problem.
It takes some effort though, for one you need to re-tar every five years.