Homeowners across Boulder County call about icicles. Icicles are cosmetic. The dam behind them, holding back standing water, is not. As part of our complete Longmont winter roof services, crews handle commercial ice dam removal across Boulder County.
Why Longmont Roofs Dam on Days It Never Thaws
At Longmont's elevation the air can stay below freezing all day while direct sun still melts the top of the snowpack. That meltwater runs down under the pack, reaches a shaded eave, and refreezes — on a day the thermometer never rose above freezing.

Aspect decides which eaves suffer. A sunny plane sheds water across a roof in Longmont to a shaded eave that has not been above freezing for weeks, and that is where the ice builds into a wall.
Ice-barrier practice in Boulder County
High-country Colorado codes typically call for extended ice barrier and, on metal roofing, snow guards above any door, walkway or parking area. Both exist because of what comes off these roofs.
Commercial Ice Dam Removal in Longmont: How The Work Runs
Roof warranties and who is allowed up there
Most commercial membranes carry a manufacturer's warranty with conditions about who may work on the roof and what methods are permitted. Snow removal is generally fine; mechanical ice removal very often is not, and the wrong contractor with the wrong tool can void cover worth considerably more than the clearing.
The warranty gets read before the roof is walked, and the method used is one the document permits.
Overflow scuppers are the tell
Water running out of an overflow scupper in winter means the primary drains are not taking it. On a Longmont building that is a sign the roof is holding standing water somewhere above a frozen drain, and the load is being carried rather than shed.
Scuppers are checked first for exactly that reason, and a dry scupper above a wet roof is as informative as a running one.
What the board or the owner gets
A condition report with dated photographs, what was found, what was done and what is still a risk — in a form that can go to a board, an owner or a carrier without being rewritten.
For a managed Longmont property that document is usually the reason the spend gets approved without a second conversation.
Membrane-safe means something specific
EPDM, TPO and modified bitumen all tolerate steam at low pressure and none of them tolerate chipping, scraping or a pressure washer. Crews steam the drains and scuppers open first to restore flow, then work the ponded ice, and they stay off seams and flashing details with the lance.
Mechanical units, conduit runs, solar racking and safety railing all get worked around rather than over.
Working around rooftop plant
HVAC curbs, exhaust fans, conduit, gas lines, solar racking and railing are all obstacles and all drift traps. The snow behind a large unit is usually the deepest on the roof and the ice under it the thickest.
Crews work around and under them rather than over, and anything running stays running.

What you get in Longmont
- Documentation for the boardCondition report and photo record with every invoice
- Tenant-hours schedulingWork windows set around occupancy and access
- Overnight windows availableWork scheduled outside occupancy where access demands it
| Service | Commercial Ice Dam Removal in Longmont, CO |
|---|---|
| Removal method | Low-pressure steam only. No chipping, salt or pressure washing. |
| Coverage area | Longmont and Boulder County |
| Local ice-barrier practice | Extended membrane plus snow retention |
| Pricing model | Billed by the crew hour, rate quoted before dispatch |
| Typical scope | Steam, 8-16 crew hours typical |
| Dispatch window | 24 to 48 hours in mountain terrain |
Neighborhoods and Towns We Reach From Longmont
Crews working Longmont cover the adjoining communities on the same route — Hygiene, Niwot, Mead, Berthoud and Firestone — so a storm week usually means one truck handling several addresses in Boulder County rather than separate trips.
Nearest hub towns with their own commercial ice dams pages: Erie, Boulder, Lafayette, Louisville, Loveland, Broomfield.
Longmont sits inside the regular Colorado service area, so a crew is usually scheduled the same day or the following morning.
Most jobs do not stop at one service. Commercial Ice Dams in Longmont often runs alongside commercial roof snow removal in Longmont, and both get written into one scope rather than billed as separate visits.
Active leak right now? Our 24/7 Longmont steam ice dam removal crews are dispatched first during a freeze event. Call (888) 561-9664.



