Figuring gutters sizes and capacities is a complex brain-freeze equation involving the size and slope of your roof and the average maximum rainfall your area can expect. We recommend leaving the calculations to your gutter installation professional.
For the most part, you won’t go wrong with a 5-inch, K-style gutter. “A 5-inch gutter is pretty standard and will handle rainfall just about anywhere in the country,”.
6" Gutters are one inch wider and one inch deeper, They hold approximately hold about 40% more water and some people say they hold as much as 167% more water. And in combination with a 3"x 4" leader, they let out about100% more water, can be installed with less pitch, keeping your Gutters more level for a superior look and Functionality. Water will always flow to it's lowest point and with a larger outlet for the 3"x 4" leader, have a much less chance of clogging, making it much easier to maintain and less of your precious time going up on your roof and keeping you safe from spending time up on a roof or ladder that only leads to dangerous work.
ALUMINIUM or GALVANIZED?
Comparing aluminium and galvanized steel rain gutters is easy, but contrasting them is a nightmare. They are often considered two sides of the same coin because they are nearly the same price; both resist rust, are quite durable and last a long time. At the same time, there are some small differences here and there that can help you make a decision on which one is best for your home. Aluminium is generally the most popular material, but galvanized steel is also dependable and nearly as popular.
HALF ROUND GUTTERS
Half-round gutters are exactly what the name suggests: half-round tubes. Half-round gutters often are found on older, historic homes.
A box gutter, parallel gutter, or trough gutter is a rain gutter on a roof usually rectangular in shape; it may be lined with EPDM rubber, metal, asphalt, or roofing felt, and may be concealed behind a parapet or the eaves, or in a roof valley.