Winter in Merrimack does not need a record storm to put water inside a house. It needs a roof with snow on it, an attic leaking heat, and one cold night. As part of our complete Merrimack winter roof services, crews handle commercial ice dam removal across Hillsborough County.
Older Housing, Heavy Snow: The Hillsborough County Case
A nor'easter can load a roof in Merrimack with heavy, wet snow overnight. Coastal air then swings the temperature either side of freezing for days, which is the exact condition that builds ice fastest.

Then there is the architecture. Merrimack has a great deal of older housing with shallow eave returns, knee-wall attics and rooms built out over porches, all of which put heated air against cold deck with very little between.
Ice-barrier practice in Hillsborough County
Most Hillsborough County towns require self-adhering ice barrier at the eaves on a re-roof permit. In a historic district there may be additional review on materials, which is worth checking before work is scheduled.
Commercial Ice Dam Removal in Merrimack: 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.
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.
The pitched sections nobody plans for
Very few commercial buildings are flat all the way across. Entrance canopies, mansard faces, dormers over older frontages and the sloped transitions between roof levels all shed onto places where people walk.
Those sections behave like a residential roof and get worked like one - steam at the eave, snow guards noted where they are missing, and the pavement below cordoned while material is coming down.
Scheduling around tenants
Noise, access, parking and the hours a Merrimack business can have equipment outside its door all shape when work happens. Some jobs run overnight for that reason.
Set the constraint on the call and the window gets planned around it rather than negotiated on the day.
Parapets hold the water in
A parapet is why a commercial deck ponds instead of shedding. Scuppers through the parapet are the only exit, and they are narrow, exposed on three sides and the first thing to freeze solid.
Steaming a scupper throat open is often the single highest-value twenty minutes of a commercial Merrimack call.

What you get in Merrimack
- Drains and scuppers firstFlow restored before the ponded ice is worked
- EPDM, TPO and mod-bitLow-pressure steam only, seams and flashing details avoided
- Documentation for the boardCondition report and photo record with every invoice
| Local ice-barrier practice | Eave membrane standard on re-roofs |
|---|---|
| Removal method | Low-pressure steam only. No chipping, salt or pressure washing. |
| Service | Commercial Ice Dam Removal in Merrimack, NH |
| Coverage area | Merrimack and Hillsborough County |
| Pricing model | Billed by the crew hour, rate quoted before dispatch |
| Typical scope | Steam, 4-10 crew hours typical |
| Dispatch window | Same day to 24 hours |
Neighborhoods and Towns We Reach From Merrimack
Crews working Merrimack cover the adjoining communities on the same route — Litchfield, Amherst, Milford, Mont Vernon and Hollis — so a storm week usually means one truck handling several addresses in Hillsborough County rather than separate trips.
Nearest hub towns with their own commercial ice dams pages: Bedford, Londonderry, Nashua, Hudson, Manchester, Goffstown.
Crews cover Merrimack and the surrounding Hillsborough County towns through the whole season, and during a freeze event they run from first light until dark.
Most jobs do not stop at one service. Commercial Ice Dams in Merrimack often runs alongside commercial roof snow removal in Merrimack, and both get written into one scope rather than billed as separate visits.
Active leak right now? Our 24/7 Merrimack steam ice dam removal crews are dispatched first during a freeze event. Call (888) 561-9664.




