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Determine the right gutter size for your roof
Kentucky receives about 48 inches of rain annually. Good drainage and quality underlayment are essential.
Climate Zone
4
Electricity
$0.11/kWh
Labor Costs
85% avg
Determine the right gutter and downspout sizes for your roof
Kentucky is in Climate Zone 4 - Mixed-Humid/Mixed-Dry (balanced heating and cooling). Homes here typically have higher heating demands than cooling.
Proper gutter sizing considers several factors:
Most homes do fine with 5-inch K-style gutters and 2×3 inch downspouts. Homes with large roof areas (3,000+ sq ft), steep pitches, or in high-rainfall areas often need 6-inch gutters with 3×4 inch downspouts.
General rule: one downspout per 20-30 linear feet of gutter, plus one at every corner. More is better than fewer, especially for large roof sections.
K-style (ogee) gutters hold more water and attach flat to fascia boards. Half-round gutters hold less but clean easier and suit certain architectural styles. K-style is more common for modern homes.
Depends on your situation. They reduce cleaning frequency but don't eliminate it entirely. They work best in areas with moderate debris. In heavy pine needle or small seed areas, they can actually cause more problems.