Home risk · Winter damage

Score your home's ice damming risk

Two out of three Northeast ice-dam disasters were predictable from the attic before the first snow ever fell. This 60-second risk score tells you where you are and which fix gets you the biggest return per dollar.

Built by Benefitra. We're a licensed insurance brokerage AND we run marketing for Art Slate Roofing in Boston, which means we see both sides: what the damage costs to repair, and what the upstream fix would have cost to prevent it. We don't sell insulation, we don't sell roofing, and we don't take referral fees from contractors — so the prioritization below is honest about what actually moves the needle.

Step 1 — Your home

Home basics

Climate region and age both shift the baseline risk before we look at the attic. Newer homes built to modern energy code start in a better place; older homes need the upgrades below to catch up.

Home age (years)?Years since the home was built. Pre-1980 homes were built before modern attic-insulation code and almost always need an upgrade. Post-2010 homes usually meet R-49 already.

Climate region?Sets the baseline snow-load weight. Heavier snow regions (New England, Midwest/Great Lakes) accelerate the freeze-thaw cycle that drives ice damming.

ZIP code (optional)?Optional. Helps our agent reference the right insurance market when you book the free review. Not used to change the score itself.

Step 2 — Your attic

Insulation + ventilation

This is the single biggest driver of ice-damming risk. Warm attic air melts snow on the roof above; that meltwater refreezes when it hits the cold eaves below the heated envelope. Insulation keeps heat downstairs where it belongs; ventilation flushes whatever escapes before it warms the roof deck.

Attic insulation R-value?If you're not sure, check the depth of loose-fill or batts above your ceiling. Roughly: 6 inches = R-19, 10 inches = R-30, 13 inches = R-38, 16+ inches = R-49+. Most homes built before 1980 came in at R-11 or less.

Soffit + ridge ventilation?Balanced ventilation means continuous intake at the soffits (eaves) AND continuous exhaust at the ridge. Many older homes have neither, or just one — that's "partial." If you don't see vents along the underside of your eaves OR along the peak of your roof, it's likely none.

Roof pitch?A "12" pitch means 12 inches of rise per 12 inches of run. Low-slope roofs (less than 4:12) drain slowly and trap meltwater against ice dams much longer. Steep roofs shed snow before it can fully melt.

Past ice-dam history?Be honest — past behavior is the strongest predictor. "Minor" means visible icicles or small ice ridges but no water inside. "Moderate" means at least one interior leak event you remember. "Severe" means you've had to repair ceilings or walls more than once.

Attic has heat sources?Check this if you have HVAC equipment in the attic, ductwork (especially uninsulated), recessed lights poking up through the attic floor, or bath/kitchen fans that vent INTO the attic instead of outside. All of these dump warm air directly above your insulation. HVAC, ducts, recessed lights, or fans venting into the attic.

Complex roof geometry?Valleys (where two roof planes meet inward), dormers, and any north-facing slopes that don't see direct sun in winter all create ice-collection points. Houses with simple gable roofs have far fewer problem areas than Victorians or anything with multiple wings. Multiple valleys, dormers, or shaded north-facing slopes.

Your result

Ice damming risk profile

Updates live as you change inputs above. Heuristic model based on building-science research (Building Science Corporation, IBHS) plus Northeast carrier claim-frequency data.

Risk score

0/100

Low

Expected damage if untreated

$0/yr

$0 cumulative over 10 winters

Annualized midpoint of typical claim and out-of-pocket repair costs at this risk level.

Your home has the structural and insulation profile that typically resists ice damming.

What's driving your score

Climate baselineYou live in the ice-dam belt — every home here starts with some baseline risk.

Your prioritized fixes

Where to spend the next dollar

Ranked by risk reduction per dollar, given your specific weak points. Cost ranges are Northeast contractor midpoints (2026 dollars).

Pending inputs

Fill in the form above

Your prioritized fix list will appear here once you've answered the attic questions.

How the score works. Each factor in your inputs adds or subtracts from a baseline 25 ("you live somewhere it snows"). The largest weights go to attic insulation (worst-case +35) and past ice-dam history (severe +25), because building-science research shows those are the dominant predictors. The score is capped at 100. This is a screening tool, not an engineering assessment — a real attic inspection will tighten the picture further.

Recommended next step

If your score is moderate or above, book a free attic + roof review with a Benefitra advisor. We'll bring an insulation contractor we trust (or your existing roofer if you have one) to give you a real-numbers quote on the top fix above. We'll also tell you what your current homeowners policy covers if the leak's already started — most homeowners don't know that ice-dam interior damage IS usually covered, but the cause-of-loss exclusion language varies a lot between carriers.

Free attic + roof review

Get the fix done before the next deep freeze

A licensed Benefitra advisor will look at your score, recommend the right contractor (we work with insulation and roofing companies across New England), and walk you through what your current homeowners policy will and won't cover if a leak has already started. No referral fees, no upsell, no pressure.

We'll never share your info. You'll hear from a licensed Benefitra advisor within 1 business day. Service availability varies by state.

How this estimate works. The risk score is a heuristic blend of building-science research (Building Science Corporation guidance on warm-attic ice-dam formation, IBHS Fortified standards), Northeast carrier ice-dam claim-frequency data, and Benefitra's own field experience with roofing contractors in Boston. It is not a substitute for an in-person attic inspection or an engineering assessment. Cost ranges are 2026 Northeast contractor midpoints and will vary by region and home access. Benefitra is a licensed insurance brokerage; this calculator provides estimates and does not constitute a binding insurance quote or contractor proposal.