Typical Residential Gutter Size

The sizes available in this style are 3 4 5 and 6.

Typical residential gutter size.

This type of down spout is considered the standard downspout style in households and is used with a 5 k style guttering system. It also comes in sizes 2 3 and. You can also add additional or oversized downspouts to improve drainage if necessary. The type of gutters you buy and the size of the gutter pieces you buy should be able to handle all the rain your home gets in a year.

How to size gutters downspouts. A standard 5 inch k style gutter can handle annual rainfall for a majority of houses in most of the u s. Each gutter style comes in two sizes and each has the capacity to. If a roof s various drainage areas call for different size gutters go for the biggest one k style.

Residential sizing samples are available to check the optimal fit but in most cases the 5 half round gutter requires standard gutterbrush for 5 gutters 4 25 dia while the 6 half round gutter requires oversized gutterbrush for 6 gutters 5 25 dia. Most residential gutter systems use 5 gutters or 6 gutters. A larger size gutter system will generally be more expensive. The downspout and gutter sizing calculator is located on the tools cad and apps page of the smacna website.

Outlet sizing and spacing your gutter system will perform its best when a proper outlet size is chosen to drain a given roof area. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. Round downspouts come in various sizes and colors and mostly used with half round gutters. The definitive guide to gutter sizing five inch k style gutters or 6 inch half rounds the most common residential sizes are able to handle the rainfall on most houses in most parts of the country.

But houses with big steep roofs or those located in climates prone to heavy downpours may need wider gutters and extra downspouts to keep. Furthermore the standard norm for gutters among many in the rain carrying industry is to allow 1 square inch of outlet opening in the gutter for every. Half round and k style gutters are the two most common gutter types found on residential homes. 5 inch 5 520 square feet.

They can be 4 5 or 6 inches. Downspouts also come in different sizes such as 2 3 inches and 3 4 inches in size. The size of the gutter should never be selected for the amount of water it can hold gutter size refers to the opening at the top of the gutters and not to the depth of the gutter channel. Now architects engineers designers and contractors can easily and accurately size downspouts and gutters according to the specifications in smacna s architectural sheet metal manual 7th edition 2012.