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Hillsborough County, New Hampshire

Gutter cleaning, repair and new gutters in East Merrimack, NH

A normal year in East Merrimack brings about 40 inches of rain; on roughly 8 of its days, an inch or more comes down at once. The wettest season is fall (September to November), with about 11.1 inches; the driest is winter (December to February), with 8.5. Off a 1,000-square-foot roof, that comes to about 25,000 gallons a year for the gutters to carry.

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East Merrimack: rain and roofs

NOAA station USW00014710, 5 mi
40.4 in
Rain in a normal year, East Merrimack
NOAA normal, MANCHESTER AP
8.3
Days with an inch or more
a year
25,000 gal
Water off 1,000 sq ft of roof in East Merrimack
0.62 gal per sq ft per inch
6.35 in/hr
5-minute downpour, once in 10 years
NOAA Atlas 14 Volume 10
Oct 19
First fall frost
median date
1984
Median year homes were built
ACS 2020–2024
32%
Homes built before 1980
ACS 2020–2024
Winter8.5 in
Spring10.2 in
Summer10.7 in
Fall11.1 in

Bars to one scale; the longest is fall (September to November).

By heavy-rain days, East Merrimack falls among the fewest heavy-rain days of the 60 places in New Hampshire on this site (8.3 a year). By the age of its homes it sits among the newest by median year built of the 60 places in New Hampshire on this site (half built by 1984). The first frost here ranks among the latest for the first fall frost of the 60 places in New Hampshire on this site (October 19).

When to clean gutters in East Merrimack

The first fall frost comes around October 19 in a typical year here, and the last spring frost around April 21 (median dates, NOAA normals). A fall cleaning set for the weeks after that frost, when the branches over the house are bare, gets the year’s leaves in one trip; a spring visit follows once the pollen and catkins have come down.

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

Gutter and downspout size for East Merrimack rain

Gutters are sized for the worst few minutes of a storm, not for the year. In East Merrimack the five-minute rain expected about once in ten years falls at 6.35 inches an hour (NOAA Atlas 14 Volume 10). At that rate one 2-by-3-inch downspout drains about 1,130 square feet of roof and one 3-by-4-inch downspout about 2,270, 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.

With about 53 inches of snow in a normal year here (NOAA normals), gutters carry ice as well as water. Ice dams start with heat from the house melting roof snow that refreezes at the edge (University of Minnesota Extension); the fix for the dam is in the attic, and the gutter’s part is to be hung strongly enough to take the weight.

The houses in East Merrimack

Half the homes in East Merrimack were built by 1984, 32% before 1980 (ACS 2020–2024). At that age a gutter has seen decades of leaves and storms, and the fascia it hangs from has too.

67% of households own their home, and 18% of homes are detached houses, 33% townhouses. Where an HOA governs the exterior, its rules on gutter color and style apply before any order is placed.

Hiring in New Hampshire

Before hiring in East Merrimack, ask which New Hampshire license or registration the contractor holds and for a certificate of liability insurance. Hiring a gutter contractor

Gutter work in East Merrimack

With half the homes built by 1984, replacement gutters and the fascia behind them come up more often here than in newer suburbs. The line takes all of it:

Nearby

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