I have a flat roof, ~ 150 m2. The roof is under a ~ 5 degree slope.
Since the roof is approx 15 meters long (by 10 meters wide), I was thinking to make (on the low side) the high point of the gutter in the center of the wall. Then install the drains on each side (125mm dia).
drain CENTER drain (low) (high) (low) |--- 7500 mm --||-- 7500 mm --| | | (0.5% drop) (0.5% drop)
I would like to use zinc gutters (½ round), but I'm a bit concerned how to connect these at the center.
If I buy a long piece of zinc gutter (~ 6-10 meter), would this by itself be flex enough so I can achieve a 0.5% drop/pitch? Or would I need to solder two parts in the center under an angle?