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Does your Minneapolis home have ice dam damage?

Ice dam damage shows up as water stains on ceilings and walls along exterior edges, peeling paint, soaked insulation, and roof shingles lifted or torn from ice movement. The Minneapolis ice-dam cycle (December-March) destroys 30-50% of roofs each winter to some degree. Modern Exterior Systems (Modex) repairs ice-dam damage, upgrades the underlayment, and corrects the ventilation cause. MN License BC762305.

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How do ice dams form?

Ice dams start in your attic. Heat escaping from your conditioned space warms the roof deck above the insulation. That warmth melts snow sitting on the roof. The meltwater flows downward toward the colder eaves, where it refreezes into a dam. Subsequent meltwater pools behind the dam and backs up under the shingles, leaking into your home. The mechanism is heat loss from inside your house, not clogged gutters.

Free storm-damage inspection

Structural

Root-cause fixes, not gutters

Three upgrades stop ice dams at the source.

Insulation

Attic insulation to R-49 or higher

Minnesota building code requires R-49 across the attic floor. Many Twin Cities homes built in the 1980s and 1990s fall short. Modex upgrades insulation to code minimum or higher, reducing heat loss into the attic and keeping the roof deck colder.

Ventilation

Continuous soffit-to-ridge airflow

Proper attic ventilation keeps the roof deck cold, even on sunny winter days. Many older homes have ridge vents but blocked or missing soffit vents, breaking the airflow. Modex installs continuous soffit baffles and ridge vents to create unobstructed airflow from eaves to peak.

Protection

Ice-and-water shield retrofit

Building code requires ice-and-water shield at the eaves, but many older roofs predate the requirement. Modex installs 6–8 feet of ice-and-water shield on every roof replacement, exceeding code. This self-adhering membrane catches any meltwater that backs up under the shingles.

What does ice dam damage look like?

Ice dam damage often hides inside your home until it's severe. Water stains on ceilings near exterior walls, water dripping inside at window or door headers, peeling paint or rotted trim at the wall-ceiling junction, mold on attic insulation near the eaves, and sagging or soft roof decking at the edge are all red flags. Modex documents damage with on-roof photography for your insurance claim.

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Insurance

What insurance covers for ice dam damage

Most Minnesota homeowners policies cover ice dam damage as sudden water damage. Your carrier typically pays for shingle replacement at affected areas, interior water damage repair, and rotted decking replacement. Modex documents all damage with on-roof photography to support your claim.

Costs

Repair vs prevention

Compare the cost of fixing damage versus stopping it at the source.

Ice dam repair

$800

to $3,000 typical

Shingle replacement at affected areas

Ice-and-water shield retrofit

Interior water damage repair

Ice dam prevention

$1,500

to $5,000 typical

Attic insulation upgrade to R-49

Soffit-to-ridge ventilation retrofit

Extended ice-and-water shield installation

Breaks the recurrence cycle

Prevents future water damage

Myth

Why gutter guards don't solve ice dams

Gutter guards reduce leaf accumulation and freezing in gutters, which is a separate problem. Ice dams form because heat from your attic melts snow on the roof deck. If a contractor recommends gutter guards to prevent ice dams, they're selling the wrong solution.

Free ice dam assessment

We inspect your attic ventilation, insulation, and roof deck within 24–48 hours.

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Questions

Answers to the most common questions about ice dam damage and prevention.

Do gutter guards prevent ice dams?

No. Gutter guards reduce leaf accumulation and freezing in gutters, which is a separate problem. Ice dams form because heat from your attic melts snow on the roof deck, not because gutters are clogged. The root cause is attic heat loss and poor ventilation. A contractor recommending gutter guards to prevent ice dams is selling the wrong solution.

Does homeowners insurance cover ice dam damage?

Most Minnesota homeowners policies cover ice dam damage as sudden water damage. Insurance typically covers shingle replacement at affected areas, interior water damage repair, and rotted decking replacement. Root-cause fixes like attic insulation upgrades and ventilation retrofits are not covered—those are homeowner-funded improvements that prevent future damage.

Is attic insulation alone enough?

Insulation alone is not enough. You need both insulation (R-49 or higher) and continuous soffit-to-ridge ventilation. Many older Twin Cities homes have adequate insulation but blocked or missing soffit vents. Without airflow, warm air still reaches the roof deck. Modex upgrades both systems together for lasting results.

How do I know if I have ice dam damage?

Look for water stains on ceilings near exterior walls, water dripping inside at window or door headers, peeling paint or damaged trim at the wall-ceiling junction, mold on attic insulation near the eaves, or sagging roof decking at the edge. If you see any of these, call Modex for a free inspection at 952-206-6339.

Can ice dams be prevented entirely?

Yes, with proper attic insulation, continuous ventilation, and ice-and-water shield protection. Modex installs 6–8 feet of ice-and-water shield on every roof (exceeding code minimum) plus soffit-to-ridge ventilation and insulation upgrades. This combination stops ice dams at the source and breaks the recurrence cycle.

Still have questions?

Contact our team or call 952-206-6339 for a free consultation.

Contact

Talk to a Modex project specialist

Our crews diagnose ice dam damage and design a prevention plan tailored to your home.

Call 952-206-6339

Reviewed by Joe Dvorak, Owner, Modern Exterior Systems · Updated May 2026

Modex is a women-owned roofing contractor in Eden Prairie, MN. CertainTeed ShingleMaster · Malarkey Emerald Pro. BBB A+ · NRCA Member #1016569 · MN License #BC762305.