Gutter Size For Metal Roof

Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.

Gutter size for metal roof. Then use the chart below to see what size gutter you need. For half rounds 5 inch should be used for up to 2500 sq feet and 6 inch for up to 3 840 sq ft. Gutter downspout sizes are 3 to 6 inches. The average life of a non metal roof is 17 years.

Also the gutter width in relation to height may also be adjusted. 6 inch 7 960 square feet. 5 inch 5 520 square feet. Adding additional sections of gutter reduces the length of each section and will reduce the gutter size.

6 inch 3 840 square feet. The larger a gutter downspout the more water it can drain quickly. If a roof s various drainage areas call for different size gutters go for the biggest one k style. Most downspouts are rectangular but they can also be round or square.

After you have calculated the square footage use following calculations. Ice dams can also occur on metal roofs and can cause damage. When you are considering what kind of gutters to get keep in mind that different gutter shapes have a significant impact on the capacity of the gutter. 5 inch 2 500 square feet.

However too large a gutter downspout can look unattractive. 6 inch 7 960 square feet. A metal roof can also increase the resale value of your home. 5 inch 5 520 square feet.

But a metal roofing system offers unmatched durability and can last 2 to 3 times longer. Add a gutter cover for your gutters. Half round adjusted square footage of roof. The gutter and downspout size requirement depends upon the number of sections and length of the gutter sections as well as the number of downspouts.

For a 5 inch k style gutter the square footage should be up to 5 500 sq ft and for a 6 inch k style gutter the square footage should be upto 7 900 sq ft. In some states like texas a metal roof can even lower your homeowner s insurance by 35. Then use the information below to see what size gutter you need.