Ice dams form when heat escaping through the attic melts snow on the upper roof, which then runs down and refreezes at the colder eaves where there's less heat underneath. The resulting ice ridge blocks further meltwater from draining off the roof, forcing it to back up under the shingles and often into the attic or exterior walls.
Long Island's freeze-thaw winter pattern makes ice dams a recurring concern for many homes, particularly those with limited attic insulation or unbalanced ventilation. We address both sides of the problem: safely removing an existing ice dam without damaging the roof, and identifying the ventilation or insulation gaps that caused it in the first place.
If ice dams have already formed and water is actively getting into the home, removal is the immediate priority. But removal alone doesn't fix the underlying cause, and the same conditions will likely produce the same ice dam again next winter unless attic insulation and ventilation are addressed. The two are related but separate projects, and it's worth planning for both.
Careful removal of existing ice buildup at the eaves using methods that clear the blockage without damaging the underlying shingles or gutters.
A gentler removal method using low-pressure steam to melt ice without the mechanical impact risk associated with chipping or breaking ice manually.
Evaluation of attic floor insulation levels and air-sealing gaps that allow heat to escape into the attic and contribute to uneven roof surface temperatures.
Balancing soffit intake and ridge or other exhaust ventilation to reduce the temperature differential between the upper roof and the eaves.
Adding waterproof underlayment at the eaves during a roofing project specifically to limit damage from any future ice dam events.
Electric heat cables installed along problem eave areas as a supplemental measure to keep a channel clear for meltwater drainage during freeze-thaw cycles.
We check for active water intrusion, the extent and location of the ice dam, and any interior signs of leaking before starting removal.
We remove the ice dam using methods suited to the situation, such as low-pressure steam, that clear the blockage without damaging shingles or gutters underneath.
We work to open a path for trapped meltwater to drain off the roof rather than continuing to back up under the shingles.
We check attic insulation levels and ventilation setup to identify what's contributing to the uneven roof surface temperature that caused the ice dam.
We outline insulation, ventilation, or ice and water shield improvements that address the root cause rather than just the immediate ice buildup.
Where you choose to move forward, we complete the insulation, ventilation, or underlayment upgrades to reduce the likelihood of repeat ice dams.
Removal cost depends on the size and extent of the ice dam and how it's accessed safely, while prevention work costs depend on the scope of insulation and ventilation corrections needed. Homes with more extensive attic insulation gaps require more work than a home with an isolated ventilation imbalance. We assess the specific situation before quoting either service.
Get an EstimateWe don't treat ice dam removal as a one-time fix disconnected from the cause. Every removal call includes a look at attic insulation and ventilation, because that's what determines whether you're dealing with the same problem again next winter.
Tell us about your home and we’ll come out, measure, and give you a written price with the scope spelled out. Prefer to talk it through? Call (631) 972-0873.
(631) 972-0873No obligation. We usually get back to you within one business day.