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Merrimack County, New Hampshire

Gutter cleaning, repair and new gutters in Henniker, NH

Rain in Henniker adds up to about 49 inches in a normal year, with about 14 days that bring an inch or more. The wettest season is fall (September to November), with about 13.8 inches; the driest is winter (December to February), with 10.9. Off a 1,000-square-foot roof, that comes to about 30,700 gallons a year for the gutters to carry.

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Henniker: rain and roofs

NOAA station USC00270913, 11 mi
49.5 in
Rain in a normal year, Henniker
NOAA normal, BRADFORD 2
13.5
Days with an inch or more
a year
30,700 gal
Water off 1,000 sq ft of roof in Henniker
0.62 gal per sq ft per inch
6.32 in/hr
5-minute downpour, once in 10 years
NOAA Atlas 14 Volume 10
Oct 1
First fall frost
median date
1972
Median year homes were built
ACS 2020–2024
73%
Homes built before 1980
ACS 2020–2024
Winter10.9 in
Spring11.9 in
Summer12.8 in
Fall13.8 in

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

By heavy-rain days, Henniker falls 12th for heavy-rain days of the 60 places in New Hampshire on this site (13.5 a year). By house age it falls near the middle of the 60 places in New Hampshire on this site (half built by 1972). By first frost it falls 7th earliest for the first fall frost of the 60 places in New Hampshire on this site (October 1).

When to clean gutters in Henniker

The first fall frost comes around October 1 in a typical year here, and the last spring frost around May 6 (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 Henniker rain

The short, hard downpour is what a gutter is sized for. In Henniker the five-minute rain expected about once in ten years falls at 6.32 inches an hour (NOAA Atlas 14 Volume 10). At that rate one 2-by-3-inch downspout drains about 1,140 square feet of roof and one 3-by-4-inch downspout about 2,280, 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 68 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 Henniker

Half the homes in Henniker were built by 1972, 73% 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.

44% of households own their home, and 39% of homes are detached houses, 16% 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 Henniker which license or registration they hold in New Hampshire, and for proof of liability insurance. Hiring a gutter contractor

Gutter work in Henniker

With half the homes built by 1972, 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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