Ice Dam Removal & Winter Roof Issues
Safe, effective ice dam removal and prevention for New Hampshire homeowners. Protect your roof and home from the freeze-thaw cycles that cause costly water damage.
New Hampshire's #1 Winter Roof Problem — And How to Beat It
If you've lived in Southern NH for a winter, you know ice dams. Those thick ridges of ice along your eaves aren't just ugly — they're actively forcing water under your shingles and into your home. Left unchecked, ice dams cause stained ceilings, rotting sheathing, mold growth, and damaged insulation.
Prescott Roofing provides both emergency ice dam removal and long-term prevention solutions. We understand the specific challenges of New Hampshire winters, and we'll help you protect your home from the inside out.
How Ice Dams Form
Understanding the cycle helps you understand the fix. Here's what happens:
- 1
Heat Escapes the Attic
Warm air from your living space rises into the attic through gaps around fixtures, ductwork, and poorly sealed penetrations. Inadequate insulation makes this worse.
- 2
Snow Melts Unevenly
The warm attic heats the roof deck, melting snow from underneath on the upper sections of the roof where the attic sits. The eaves, which extend past the exterior wall, stay cold.
- 3
Meltwater Refreezes at the Eave
Water flows down the warm upper roof and hits the cold eave overhang. It refreezes, building up a ridge of ice — the dam.
- 4
Water Pools and Penetrates
As the dam grows, meltwater pools behind it. This standing water seeps under shingles, through the underlayment, and into your home. The damage compounds with every freeze-thaw cycle.
Our Ice Dam Services
- Professional steam ice dam removal (safe, no roof damage)
- Emergency response for active leaks from ice dams
- Attic insulation assessment and improvement recommendations
- Ventilation evaluation (ridge vent, soffit vent, baffles)
- Ice and water shield installation during roof replacement
- Heat cable installation for chronic problem areas
- Interior water damage documentation for insurance claims
Why Ice Dams Are Worse in Southern NH
Southern NH sits in a zone where temperatures regularly fluctuate around freezing throughout winter. This constant freeze-thaw cycle creates ideal ice dam conditions — especially on roofs with inadequate ventilation or insulation. Older homes in towns like Manchester, Nashua, Bedford, and Derry are particularly vulnerable because they were built before modern energy codes required the attic sealing and insulation depth that prevents heat loss through the roof deck.
Prevention Is the Best Strategy
While we're here to help with emergency removal, the real fix for ice dams is preventing them from forming. The solution is almost always in your attic, not on your roof:
- Air sealing: Close gaps around light fixtures, plumbing stacks, attic hatches, and ductwork that allow warm air into the attic.
- Insulation: Bring attic insulation up to current code depth (R-49 or higher in NH climate zones) to slow heat transfer through the ceiling.
- Ventilation: Ensure balanced intake (soffit vents with proper baffles) and exhaust (ridge vent) so any heat that does reach the attic is flushed before it warms the deck.
- Ice & water shield: During a roof replacement, we install ice and water shield membrane along eaves, in valleys, and around penetrations as a last-line defense.
During your free inspection, we'll assess your attic's insulation and ventilation and recommend cost-effective improvements that will pay for themselves in reduced energy bills and prevented water damage.
Schedule Winter Roof AssessmentFrequently Asked Questions
Ready to Protect Your Home?
Get a free, no-obligation roof inspection from the team that treats every project with precision.