Rockingham County, New Hampshire
Gutter cleaning, repair and new gutters in Derry, NH
A normal year in Derry brings about 47 inches of rain; on roughly 12 of its days, an inch or more comes down at once. The wettest season is fall (September to November), with about 12.5 inches; the driest is winter (December to February), with 10.5. That is about 28,900 gallons a year off each 1,000 square feet of roof, every drop of it through a gutter and a downspout.
Call (866) 228-6229 free call to a gutter contractor serving DerryDerry: rain and roofs
NOAA station USC00279278, 4 miBars to one scale; the longest is fall (September to November).
Counting days with an inch of rain or more, Derry sits near the middle of the 60 places in New Hampshire on this site (11.6 a year). Its housing ranks among the newest by median year built of the 60 places in New Hampshire on this site (half built by 1981). By first frost it falls among the latest for the first fall frost of the 60 places in New Hampshire on this site (October 11).
When to clean gutters in Derry
The first fall frost comes around October 11 in a typical year here, and the last spring frost around April 30 (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 Derry rain
The short, hard downpour is what a gutter is sized for. In Derry the five-minute rain expected about once in ten years falls at 6.48 inches an hour (NOAA Atlas 14 Volume 10). At that rate one 2-by-3-inch downspout drains about 1,110 square feet of roof and one 3-by-4-inch downspout about 2,220, 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.
Derry averages about 76 inches of snow a year (NOAA normals). Snow on a roof brings ice dams: heat escaping from the house melts the snow, and the water refreezes at the cold eave, in the gutter and over it. University of Minnesota Extension puts the cause in the attic, not in the gutter, so a gutter that fills with ice is a symptom; hangers spaced to carry ice and a sound fascia are what the gutter itself needs.
The houses in Derry
Half the homes in Derry were built by 1981, 46% before 1980 (ACS 2020–2024). Houses that age have often had their gutters replaced once already; if not, the original runs and the boards behind them deserve a close look. On a house built before 1978, replacing more than 20 square feet of painted fascia or trim falls under the EPA’s lead-safe rule, so ask whether the crew is certified.
59% of households own their home, and 40% of homes are detached houses, 14% townhouses. If an association maintains the exterior, the gutters may be its job rather than yours; check before calling.
Hiring in New Hampshire
Licensing for gutter work differs from state to state; ask a contractor in Derry which license or registration they hold in New Hampshire, and for proof of liability insurance. Hiring a gutter contractor
Gutter work in Derry
With half the homes built by 1981, replacement gutters and the fascia behind them come up more often here than in newer suburbs. The line takes all of it: