K style can handle more water than half round and a 5 k style can handle about much water as 6 half round.
Overall difference in water volume between 5 and 6 gutter.
Able to handle carry more water.
With these systems a large load of water can overwhelm 5 inch troughs with their swifter flow rates.
Six inch troughs can hold twice as much water as 5 inch gutters.
In the past residential homes have 5 gutters and 2 x3 downspouts and commercial buildings have 6 gutters with 3 x4 downspouts.
In this round the 6 inch gutters.
The difference is about 50 of the amount of water treated by the 5 inch gutter.
But even among k style aluminum there is a wide range of choices mostly regarding thickness which ranges from 019 to 032 but also on finishes.
It is important because the heavy weight of the water can cause the gutter to sag.
Half round is also a lot more expensive than k style.
Currently we are seeing more residents expand their downspouts to 3 x4 and some even install the complete 6 gutter system.
A larger gutter actually will hold more debris than a standard five inch gutter and is not self cleaning.
Pro s in having a 6 gutter system.
It means that the gutter will not be overfilled during periods of heavy rains as there is enough space inside the gutter.
If you want the best performance from your gutters and have a larger roof area then 6 gutters along with the larger 3 x 4 leaders downspouts are able to handle approximately 50 more water than a regular 5 gutter.
Also the steeper the pitch of the roof the more wind driven rain it will take.
This further decreases the chance for overflow of your gutter even during the hardest of windblown downpours.
Six inch gutter will let the leaves and other debris wash right down the downspout with no need for covers.