Adams County, Colorado
Gutter cleaning, repair and new gutters in Thornton, CO
Thornton gets about 15 inches of rain in a normal year, and on about 2 days a year an inch or more falls in a single day. The wettest season is spring (March to May), with about 5.5 inches; the driest is winter (December to February), with 1.5. Every 1,000 square feet of roof sheds about 9,000 gallons a year, and all of it goes through the gutters.
Call (866) 228-6229 free call to a gutter contractor serving ThorntonThornton: rain and roofs
NOAA station USC00055984, 4 miBars to one scale; the longest is spring (March to May).
For days with an inch of rain or more, Thornton ranks near the middle of the 182 places in Colorado on this site (2.0 a year). Its housing ranks near the middle of the 181 places in Colorado on this site (half built by 1996). The first frost here ranks among the latest for the first fall frost of the 182 places in Colorado on this site (October 11).
When to clean gutters in Thornton
The first fall frost comes around October 11 in a typical year here, and the last spring frost around May 2 (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 Thornton rain
Gutters are sized for the worst few minutes of a storm, not for the year. In Thornton the five-minute rain expected about once in ten years falls at 5.42 inches an hour (NOAA Atlas 14 Volume 8). At that rate one 2-by-3-inch downspout drains about 1,330 square feet of roof and one 3-by-4-inch downspout about 2,660, 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 45 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.
Thornton is dry by national standards, about 15 inches in a normal year, but much of the rain that does come can arrive in short, hard storms: the five-minute downpour expected once in ten years still runs at 5.42 inches an hour. Where gutters are used here, the job is moving that burst away from the foundation, and keeping a dry season’s dust and debris from blocking the first storm.
The houses in Thornton
Half the homes in Thornton were built by 1996, 23% before 1980 (ACS 2020–2024). With homes this new, the gutters are usually the builder’s originals; keeping them clear matters more than replacing them.
73% of households own their home, and 62% of homes are detached houses, 11% townhouses. Where an HOA governs the exterior, its rules on gutter color and style apply before any order is placed.
Hiring in Colorado
Before hiring in Thornton, ask which Colorado license or registration the contractor holds and for a certificate of liability insurance. Hiring a gutter contractor
Gutter work in Thornton
In a neighborhood with half its homes built by 1996, the usual calls are cleaning, guards and small repairs. The line takes all of it: