Most Hanover homeowners find out about an ice dam from the inside — a damp patch on a bedroom ceiling, or water tracking down the inside of a window frame. As part of our complete Hanover winter roof services, crews handle ice dam removal across Grafton County.
Hanover Ice Dams: What a Five-Month Snow Pack Does
The defining feature of a Grafton County winter is persistence. It is not one storm, it is a continuous load sitting on the roof from late fall through to a spring thaw.
A long season is not a safer one. It means more freeze-thaw cycles, and each one adds a layer to the dam. By late winter the ice at a Grafton County eave can be a foot deep and locked to the shingle, with standing water sitting behind it.
Ice-barrier practice in Grafton County
Insulation depth matters at least as much as membrane in this climate, and Grafton County stock built before modern attic standards tends to be short on both. One is a code question; the other is why the dam formed.
Ice Dam Removal in Hanover: How The Work Runs
Why salt and ice melt make it worse
Calcium chloride opens a narrow channel and leaves the dam standing. The channel refreezes, the dam does not go anywhere, and in the meantime the runoff corrodes gutter seams, fasteners, flashing and anything growing underneath. Water Stain on the Ceiling in Winter.
It is a stopgap at best. On a roof in Hanover with an active leak it buys hours, not days, and it adds a corrosion problem to the water problem.
Dormers, valleys and dead spots
Ice does not distribute evenly. It concentrates where two roof planes meet, behind dormers, in dead valleys that drain nowhere, and along the north face that never sees sun. Those pockets hold water deepest and leak first.
A crew working a roof in Hanover clears the full eave line and then goes back through the valleys and dormer pockets specifically, because clearing the easy straight run and calling it done is how a roof leaks again a week later.
What steam actually does
A steam unit delivers water at roughly 290°F at a pressure low enough to rest your hand in the plume. It cuts a channel straight through the ice and lifts the dam off in sections, right down to the shingle. The heat does the work, not force, so granules, seal strips and flashing come through untouched.
That is the whole difference between steam and the hot pressure washers often sold as steam. A pressure washer cuts ice fast because of its pressure — and that same pressure strips the granules off asphalt shingles and drives water up under the courses. One method removes ice. The other removes ice and roof.
Why the dam formed in the first place
Ice dams are a heat problem wearing a weather costume. Warm air escaping into the attic melts snow on the upper roof; that meltwater runs to the eave, which hangs past the heated envelope and stays below freezing; it refreezes there, and the ridge of ice grows a layer every cycle. Removal is the emergency fix. Before the crew leaves you will know which part of your attic is feeding it.
Working at night and during an active storm
Freeze events do not keep office hours, and the worst leaks tend to announce themselves in the evening when the day's melt refreezes. Crews run lit, and a roof that is actively collecting snow is worked anyway, because waiting for better weather means the dam is bigger when somebody finally gets to it.
What does stop a crew is wind and lightning. Both are judgment calls made on site in Hanover, and a postponed start gets explained rather than dressed up.
What you get in Hanover
- Valleys and dormersThe dead spots that hold the deepest ice get worked specifically
- Photographed as we workDated before and after images and a written scope your adjuster will accept
- Steam onlySafe on asphalt, cedar, slate, tile and metal — no chipping, no pressure, no salt
| Service | Ice Dam Removal in Hanover, NH |
|---|---|
| Coverage area | Hanover and Grafton County |
| Removal method | Low-pressure steam only. No chipping, salt or pressure washing. |
| Local ice-barrier practice | Eave membrane required on new work |
| Pricing model | Billed by the crew hour, rate quoted before dispatch |
| Documentation | Dated before and after photos, written scope in Xactimate line items |
| Typical scope | Steam, 6-14 crew hours typical |
Neighborhoods and Towns We Reach From Hanover
Crews working Hanover cover the adjoining communities on the same route — Etna, West Lebanon, Lyme, Enfield and Lyme Center — so a storm week usually means one truck handling several addresses in Grafton County rather than separate trips.
Nearest hub towns with their own ice dam removal pages: Lebanon, Claremont, Franklin, Laconia, Concord, Keene.
Scheduling for Hanover tightens up during a freeze event, which is exactly when the phone beats the form. Water coming in means a call, not an email.
Most jobs do not stop at one service. Ice Dam Removal in Hanover often runs alongside water mitigation & dryout in Hanover, and both get written into one scope rather than billed as separate visits.
Active leak right now? Our 24/7 Hanover steam ice dam removal crews are dispatched first during a freeze event. Call (888) 561-9664.
