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Spartanburg County, South Carolina

Gutter cleaning, repair and new gutters in Duncan, SC

A normal year in Duncan brings about 50 inches of rain; on roughly 14 of its days, an inch or more comes down at once. The wettest season is summer (June to August), with about 13.4 inches; the driest is fall (September to November), with 11.2. That is about 30,800 gallons a year off each 1,000 square feet of roof, every drop of it through a gutter and a downspout.

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Duncan: rain and roofs

NOAA station USW00003870, 6 mi
49.7 in
Rain in a normal year, Duncan
NOAA normal, GREER
14.2
Days with an inch or more
a year
30,800 gal
Water off 1,000 sq ft of roof in Duncan
0.62 gal per sq ft per inch
7.46 in/hr
5-minute downpour, once in 10 years
NOAA Atlas 14 Volume 2
Nov 7
First fall frost
median date
2001
Median year homes were built
ACS 2020–2024
28%
Homes built before 1980
ACS 2020–2024
Winter12.5 in
Spring12.6 in
Summer13.4 in
Fall11.2 in

Bars to one scale; the longest is summer (June to August).

Counting days with an inch of rain or more, Duncan sits near the middle of the 266 places in South Carolina on this site (14.2 a year). Its housing ranks among the newest by median year built of the 265 places in South Carolina on this site (half built by 2001). By its first fall frost it sits near the middle of the 263 places in South Carolina on this site (November 7).

When to clean gutters in Duncan

The first fall frost comes around November 7 in a typical year here, and the last spring frost around March 28 (median dates, NOAA normals). Booking the fall cleaning after the first frost, once the trees over the roof are bare, catches the season’s drop in one visit; the spring cleaning comes after the pollen and catkins are down.

When to clean gutters explains how the trees over a roof change the schedule.

Gutter and downspout size for Duncan rain

What overwhelms a gutter is a burst, not a season. In Duncan the five-minute rain expected about once in ten years falls at 7.46 inches an hour (NOAA Atlas 14 Volume 2). At that rate one 2-by-3-inch downspout drains about 970 square feet of roof and one 3-by-4-inch downspout about 1,930, by the rule in the Copper Development Association’s design handbook. Try your own roof in the gutter and downspout calculator, which starts from this figure.

The houses in Duncan

Half the homes in Duncan were built by 2001, 28% before 1980 (ACS 2020–2024). In a neighborhood that young, many houses still have the gutters the builder put up, and the usual call is a cleaning, a leak or guards rather than a full replacement.

53% of households own their home, and 62% of homes are detached houses, 1% townhouses. In a townhouse or HOA community, check who owns the gutters and what colors are allowed before booking.

Hiring in South Carolina

South Carolina has no license category for gutters. The Residential Builders Commission registers specialty trades for work over $500, and gutters are not among them; under the statute, repair or improvement of a home costing more than $5,000 is residential builder work. For a large job, ask what license the contractor holds and look it up; for any job, ask for proof of insurance.

Source: S.C. Code, Title 40 Chapter 59. Look-up: S.C. LLR, licensee lookup.

Gutter work in Duncan

In a neighborhood with half its homes built by 2001, the usual calls are cleaning, guards and small repairs. The line takes all of it:

Nearby

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