How Many Feet Of Gutter Per Downspout

Quote pats we are getting ready to replace our roof and a friend looking at the gutters said we need more downspouts.

How many feet of gutter per downspout.

What about problems with gutters that seem flat no pitch away from the roof roof itself is a 4 12 pitch. If we have to sum it up in a single rule gutters need a downspout around every 30 to 40 feet. Hangingdownspouts and gutters rain gutters review. The above recommendations assume that you have properly sized downspouts every 40 feet.

A square inch of downspout can drain 1 200 square feet of roof during a rain with an intensity of one inch per hour. For most homes this means installing spouts at either end of a gutter section. Roof area the locale s rainfall intensity and gutter capacity determine how many square inches of downspout are needed. On average two hundred feet of gutter and 50 feet of downspout will cost approximately 2250.

While not recommended for homes where temperatures reach hot or. As with gutters a downspout s capacity must match or exceed the expected runoff. Multiply the number of downspouts by square footage of each. Size downspouts to fit the gutter.

How many downspout installations should your gutters have. The standard is about inch per 10 feet. Vinyl gutters are the most budget friendly at 2 5 per linear foot. Rainn gutter sizes william adkins based in atlanta georgia w d adkins has been writing professionally since 2008.

Increasing the pitch increases a gutter s handling capacity but the gutter may look askew over a long run. Doubling the number of downspouts halves the required capacity for each. Any rule of thumb on how many downspouts should be used per foot of gutter. 3200 square feet of roof is calculated as 3200 600 5 33 rounding up you would need 6 2x3 downspouts or 3200 square feet of roof is calculated as 3200 1200 2 67 rounding up you would need 3 3x4 downspouts one 2x3 downspout will drain 600 sq.

Calculate linear feet for gutters by adding up all of the measured lengths. Cost of vinyl gutters and downspouts. The standard is about inch per 10 feet. Rectangular downspouts move slightly less water at 600 square feet for 2 by 3 inch or 1 200 square feet for a 3 by 4 inch downspout.

One 3x4 downspout will drain 1200 sq. Prices range from 6 12 per linear foot for both gutters and downspouts. He writes about business personal finance and careers. Increasing the pitch increases a gutter s handling capacity but the gutter may look askew over a long run.

The above recommendations assume that you have properly sized downspouts every 40 feet.