I have a 1 year old house that has a 6x12 flat roof front porch with a railing on top(for looks only). One of the columns on the porch split due to water getting inside. Apparently the carpennter nailed through the flashing that hangs over the edge of the porch when putting on some trim. The roofer replaced the flashing and fused it to the rubber roofing material on top of the porch by adding additional rubber around the edges to hold the flashing in place. The problem is that now the edges of the porch (6 inches or so) are about a half inch higher(they were already higher)than the interior and water can't drain off. A significant amount of water stands on the porch after every rain until it evaporates.
I think the main problem is that the roof is completely flat. It seems to me it should have a slight pitch (2 inches or so) in order for water to drain off. The builder and apparently the roofer say that it's ok for the water to remain on the roof since it has a rubber membrane style roof. Anybody have any thoughts or opinions on this?
If I get the roof rebuilt with a slight pitch should I use rubber or metal. I wan't something I'm never going to have to worry about (10 years +).
Thanks

 

To a certain extent this is ok. I ran across standards for flat rubber roofs one time and it mentioned that standing water was acceptable as long as it evaporated in 24 hours. Even if it took a little longer you should be ok. I understand your concern though. I do not have a enough experience to give you a recommendation on your replace- ment question.