Downspout systems
Round downspouts
Round copper downspout in 3 and 4 inch diameters, smooth or corrugated. It is the usual partner for half-round gutter.
Products
2 products
Corrugated round copper downspout
SKU HC-D-RC
From $19.00 per ft
Choose options: Corrugated round copper downspout
Materials and installation
Shipped anywhere, installed nearby
Materials ship nationwideEvery state, from Cleburne, Texas.
Installation is localNear Cleburne, confirmed by ZIP code.
Materials are fabricated in Cleburne and shipped to any state. Installation is a separate, local service for addresses near Cleburne, Texas, confirmed by ZIP code when you request a quote.
Round downspouts
Common questions
As a rule of thumb, 5 inch gutter takes a 2x3 rectangular or 3 inch round downspout, and 6 inch gutter takes a 3x4 rectangular or 4 inch round downspout. Large roof areas may need the bigger size or more downspouts.
Elbows are numbered 0 to 4 by angle: number 0 is 30 degrees, 1 is 45, 2 is 60, 3 is 75 and 4 is 90. The 75 degree number 3 is the standard elbow for most downspouts.
As a starting point, plan one downspout for every 30 to 40 feet of gutter, and one at each end of runs that slope both ways. Steep or large roofs need more. This is general guidance, not an engineering calculation.
Corrugated downspout has ribs pressed into the wall, which make the pipe stiffer and give it a traditional look. Smooth downspout has clean, plain faces. Both carry the same water for the same size.
Not a standard size? Tell us.
The configurator turns your measurements into an estimate and a quote request, for anything the store does not list.