Homeowners across Hennepin County call about icicles. Icicles are cosmetic. The dam behind them, holding back standing water, is not. As part of our complete Minnetonka winter roof services, crews handle mold remediation across Hennepin County.
What the Lake Does to a Roof in Minnetonka
What makes Hennepin County roofs dam is not the seasonal total, it is how the snow arrives. Bands dump a heavy, saturated pack in hours, and that pack becomes a water reservoir sitting on a heated surface.

What turns that pack into a dam is the house underneath it. Warm air finds its way into the attic, the underside of the snow melts, and the water travels to an overhang that has no heated space below it. There it stops.
Ice-barrier practice in Hennepin County
Lake-belt jurisdictions in Minnesota have enforced eave membrane on re-roof permits for a long time. The roofs that leak are, almost without exception, the ones that have not been touched since before that.
Mold Remediation in Minnetonka: How The Work Runs
Attic mold: the sheathing, the rafters and the insulation
Most ice dam mold is in the attic. Meltwater backs up under the shingles at the eave, wets the roof deck from above, and runs down onto the insulation. Black spotting on the underside of the OSB or plywood along the eave line, darkened rafters and matted, stained insulation are the signs. Mold in the Attic After an Ice Dam.
Wet insulation comes out and is bagged inside the containment. Affected sheathing and framing are HEPA vacuumed, cleaned and treated, or cut out and replaced where the wood has lost strength. Then the attic is dried to a measured number before anything goes back in.
Why ice dam water turns into mold
Ice dam water does not arrive like a burst pipe. It seeps in over days or weeks, into places nobody looks: the underside of the roof sheathing, the insulation along the eave, the top of an exterior wall. Those spaces are dark, they are full of wood and paper, and in winter they barely dry at all.
That is the whole recipe. Give mold a damp organic surface and a couple of days and it starts. The cold slows it down, the spring warm-up speeds it up, and by the time there is a musty smell upstairs it has usually been growing for weeks.
Containment and negative air
Before anything moldy is disturbed, the work area gets sealed off with poly sheeting and put under negative air pressure with an HEPA air scrubber exhausting it. Air flows into the work area, not out of it.
That is the step that keeps a contained attic or ceiling problem from becoming a whole-house problem in Minnetonka. Disturbing mold without it spreads spores to rooms that were clean.
Mold in the walls below an ice dam
Water that gets past the attic runs down the inside of exterior walls, wetting the top plate, the insulation in the stud bays and the back of the drywall. It is common to find growth inside a wall where the only visible sign was a faint stain at the ceiling line.
Those cavities get opened, the wet insulation and drywall come out, the studs are cleaned and dried, and the wall is rebuilt once readings are at standard.
Remediation, then the rebuild, from one company
Removing mold is only half a job if you then have to find someone else to hang drywall, re-insulate and paint. Ice Dam Now does the interior repair as well: new insulation, drywall, texture, trim and paint, so the ceiling that came down to get the mold out goes back up under the same scope and the same claim.
That also means one set of photographs and moisture readings runs from the first visit to the finished room, which is what an adjuster wants to see.

What you get in Minnetonka
- Containment firstPoly barriers and negative air so spores stay in the work area
- Interior repair in-houseInsulation, drywall, texture, trim and paint put back by the same crews
- Framing and sheathing cleanedHEPA vacuuming, cleaning and treatment, or replacement where the wood is compromised
| Coverage area | Minnetonka and Hennepin County |
|---|---|
| Local ice-barrier practice | Eave membrane expected on re-roofs |
| Billing | Xactimate line items on one claim; carrier billed directly where the policy allows |
| Service | Mold Remediation in Minnetonka, MN |
| Dispatch window | Same day to 24 hours |
| Primary climate stressor | Lake-effect bands, wet heavy pack |
| Interior repair | Insulation, drywall, texture, trim and paint, done in-house after drying |
Minnetonka Coverage and the Adjoining Communities
Crews working Minnetonka cover the adjoining communities on the same route — Wayzata, Navarre, Excelsior, Minnetonka Beach and Crystal Bay — so a storm week usually means one truck handling several addresses in Hennepin County rather than separate trips.
Nearest hub towns with their own mold remediation pages: Hopkins, Chanhassen, Eden Prairie, St. Louis Park, Edina, Plymouth.
Coverage runs across Minnetonka and the nearby towns all winter, and capacity is surged into whichever Minnesota market the storm actually hits.
Most jobs do not stop at one service. Mold Remediation in Minnetonka often runs alongside water mitigation & dryout in Minnetonka, and both get written into one scope rather than billed as separate visits.
Active leak right now? Our 24/7 Minnetonka steam ice dam removal crews are dispatched first during a freeze event. Call (888) 561-9664.








