Gutter cleaning, repair and new gutters in Longmont, CO

When to clean gutters in Longmont

The first fall frost comes around October 5 in a typical year here, and the last spring frost around May 7 (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 Longmont rain

The short, hard downpour is what a gutter is sized for. In Longmont the five-minute rain expected about once in ten years falls at 5.52 inches an hour (NOAA Atlas 14 Volume 8). At that rate one 2-by-3-inch downspout drains about 1,300 square feet of roof and one 3-by-4-inch downspout about 2,610, 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 93 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 Longmont

Half the homes in Longmont were built by 1990, 38% 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.

63% of households own their home, and 60% of homes are detached houses, 9% townhouses. If an association maintains the exterior, the gutters may be its job rather than yours; check before calling.

Hiring in Colorado

Licensing for gutter work differs from state to state; ask a contractor in Longmont which license or registration they hold in Colorado, and for proof of liability insurance. Hiring a gutter contractor