Snow Damage & Rodent Entry Points

How Snow and Ice Create Entry Points

Deep snow, ice dams, and freeze-thaw cycles physically reshape your house every winter — and every new gap is a mouse door.

• Ice dams lift flashing and roof edges. When flashing lifts even a quarter inch, it’s no longer sealed. A deer mouse needs a quarter inch. Come spring, the flashing settles back — but not all the way.
• Snow load cracks and crushes vent screens. Foundation, gable, and soffit vents are all vulnerable — and vents are the #1 entry point we seal on mountain homes.
• Freeze-thaw widens every gap. Water seeps into a crack in October, freezes and expands in November, seeps deeper with every cycle. By spring, gaps too small for a mouse in fall are mouse-sized.
• Snow against the house hides activity. Deep snow creates a protected, relatively warm tunnel zone where mice travel freely all winter — hidden from predators and from you.
• Garage door seals get destroyed. Ice freezes the rubber bottom seal to the ground — when the door opens, the seal tears, leaving a gap along the biggest door in your house.
• Roofline separations from snow weight. Heavy Tahoe snow causes subtle shifts — fascia pulling from the roof deck, eave joints opening. A fraction of an inch is all a mouse needs.

When the snow melts in April and May, the evidence appears — burrow holes, droppings, damaged vent screens, gnaw marks. That’s why Rodent Killer recommends a spring inspection every year: the evidence is fresh, the damage is visible, and we can seal everything before summer breeding season.

Why Rodent Killer Wins for Snow Damage Repair

1. We know what ice dam damage looks like — the subtle separation of flashing, the slight bowing of the drip edge, the gaps that open at the eave. We’ll show you photos so you can see it yourself.
2. Every vent gets checked and upgraded — cracked screens get replaced with 1/4-inch galvanized hardware cloth, not flimsy mesh that cracks again next winter.
3. Freeze-thaw gaps sealed right — foundation gaps get hydraulic cement, copper mesh, and steel mesh as appropriate — materials built to hold through Tahoe’s freeze and thaw.
4. We trap before we seal — if mice got in over the winter, we clear them out first. Sealing mice inside is worse than not sealing at all.
5. Free spring inspection with photos — full walkthrough, photos of everything we find, and a straight answer about what it costs to fix.

Our Spring Inspection — What We Check

Step 1 — Free Spring Inspection

We walk the entire property with fresh eyes after the melt — roofline, eaves, all vents, foundation perimeter, garage doors, utility penetrations. You get photos of everything we find.

Step 2 — Trap What’s Inside

If mice wintered inside, we trap them along confirmed travel paths first. We never seal a house with mice still in it.

Step 3 — Seal Every New Entry

Lifted flashing, cracked vent screens, freeze-thaw gaps, torn garage seals — sealed with steel mesh, hardware cloth, hydraulic cement, and commercial-grade seals.

Step 4 — Repair & Reinforce

Vents get 1/4-inch galvanized hardware cloth. Garage doors get commercial-grade thresholds and brush seals. Weak points get reinforced before next winter.

Step 5 — Monitor & Guarantee

If activity returns between visits, we re-treat free. Exclusion work on a monthly plan ($49–$59/month) carries a 12-month warranty — through next winter’s snow.

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