Sizing discussion tool
Could your roof need more gutter capacity?
Explore the factors that shape a sizing conversation. This deliberately avoids claiming that a few inputs can replace roof measurements and a property inspection.
01
Roof area and pitch
Larger or steeper collection areas can deliver more water to a run over a short period.
02
Valleys and long runs
Concentrated flow and long travel distances can make outlet placement as important as gutter width.
03
Downspout configuration
A larger gutter feeding too few or undersized outlets can retain the same bottleneck.