Rain Gutter Width

Downspout sizes must not exceed the bottom width of the gutter.

Rain gutter width.

If a roof s various drainage areas call for different size gutters go for the biggest one k style. Measure your gutter across the top from the back where the gutter meets the home to the outer edge. A k style gutter in the same inch width can handle twice as much water as a half round gutter. Most times these style gutters are installed with rectangular downspouts.

See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches. 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 100 square feet of roof area being drained. 5 inch standard k style gutter shop 5 gutterbrush. 6 inch 7 960 square feet.

Downspouts also come in different sizes such as 2 3 inches and 3 4 inches in size. If a roof s various drainage areas call for different size gutters go for the biggest one k style. Then use the information below to see what size gutter you need. 6 inch 7 960 square feet.

They can be 4 5 or 6 inches. 5 inch 5 520 square feet. They come in 5 inch to 6 inch widths. K style gutters are the most common option and they provide optimum drainage for the majority of homes in most of the u s.

Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. Gutters come in different sizes. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.