Montgomery County, Maryland
Gutter cleaning, repair and new gutters in Derwood, MD
Derwood gets about 41 inches of rain in a normal year, and on about 10 days a year an inch or more falls in a single day. The wettest season is summer (June to August), with about 11.0 inches; the driest is winter (December to February), with 9.1. Every 1,000 square feet of roof sheds about 25,600 gallons a year, and all of it goes through the gutters.
Call (866) 228-6229 free call to a gutter contractor serving DerwoodDerwood: rain and roofs
NOAA station USC00187705, 1 miBars to one scale; the longest is summer (June to August).
For days with an inch of rain or more, Derwood ranks among the fewest heavy-rain days of the 329 places in Maryland on this site (10.1 a year). By the age of its homes it sits near the middle of the 329 places in Maryland on this site (half built by 1985). The first frost here ranks near the middle of the 329 places in Maryland on this site (November 6).
When to clean gutters in Derwood
The first fall frost comes around November 6 in a typical year here, and the last spring frost around April 1 (median dates, NOAA normals). Plan the fall visit for after the frost, when the trees over the roof have finished dropping, and the spring visit for after the pollen and catkins.
When to clean gutters explains how the trees over a roof change the schedule.
Gutter and downspout size for Derwood rain
Gutters are sized for the worst few minutes of a storm, not for the year. In Derwood the five-minute rain expected about once in ten years falls at 6.58 inches an hour (NOAA Atlas 14 Volume 2). At that rate one 2-by-3-inch downspout drains about 1,090 square feet of roof and one 3-by-4-inch downspout about 2,190, 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 31 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 Derwood
Half the homes in Derwood were built by 1985, 15% 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.
57% of households own their home, and 53% of homes are detached houses, 35% townhouses. Where an HOA governs the exterior, its rules on gutter color and style apply before any order is placed.
Hiring in Maryland
Maryland requires a Maryland Home Improvement Commission license for home improvement work of any amount, gutters included, and a contractor may not take a deposit of more than one third of the contract price (Business Regulation § 8-617). Look the license up before signing, and keep the deposit to one third or less.
Source: Maryland Business Regulation § 8-101. Look-up: Maryland Home Improvement Commission, public query.
Gutter work in Derwood
With half the homes built by 1985, replacement gutters and the fascia behind them come up more often here than in newer suburbs. The line takes all of it: