What Wisconsin Winters Actually Do to Your Home

I've been inspecting homes across Wood, Marathon, Portage, and the surrounding counties for years now. And if there's one thing I can tell you with confidence, it's that spring is the most important time to take a hard look at your house.

People get excited about spring cleaning. Washing windows, raking the lawn, cleaning out the gutters. But before you do any of that, walk around your home slowly and actually look at it. Not a glance. Really look. Because Wisconsin winters leave behind a lot that the eye wants to skip over.

Ice Dams: More Damage Than You'd Think

Ice dams form when heat escapes through your roof, melts the snow sitting on top, and that water runs down and refreezes at the cold overhang. What you're left with is a wall of ice at your eave that traps meltwater, and that water has nowhere to go except backward, underneath your shingles and into your attic.

I've pulled back insulation in attics where the homeowner had no idea there was a problem. The ceiling beneath was discolored, the insulation was matted and wet, and in a few cases there was active mold beginning to grow. All from a winter that looked fine from the outside.

What to look for:

• Staining on your ceiling, especially near exterior walls
• Bubbling or peeling paint on walls just below the roofline
• Damaged or missing shingles along the eave after ice melts
• Wet or compressed attic insulation

If your attic isn't properly insulated and ventilated, ice dams will keep happening every winter. That's not a roof problem. It's an insulation problem.

Freeze-Thaw and Your Foundation

The ground in Central Wisconsin freezes deep. We're talking 4 feet or more in a hard winter. When that ground thaws unevenly in spring, it moves. And your foundation moves with it.

Most of the time the movement is minor and not a structural concern. But over years, repeated freeze-thaw cycles can cause cracks to grow, basement walls to bow inward slightly, and floor joists to shift off their bearing points.

I'm not trying to scare anyone. The majority of cracks I see are cosmetic: hairline horizontal cracks in poured concrete or step cracks in block foundations that have been there for decades. But there are cracks that matter, and knowing the difference is important.

What to watch for:

• New cracks that weren't there last fall
• Cracks wider than 1/4 inch, or cracks that are wider at one end
• Horizontal cracks in block or poured walls (these can indicate soil pressure)
• Doors or windows that suddenly stick or won't latch right
• Floors that feel bouncier or uneven in spring vs. fall

If you're not sure whether a crack is normal, take a photo, mark the ends with a pencil and the date, and check it again in 30 days. If it's grown, call someone.

Gutters, Downspouts, and Drainage

Heavy snow loads and ice can bend, pull, and outright rip gutters away from the fascia. After everything melts, walk the perimeter of your house and look at how water is actually leaving your property.

Gutters that are pitched wrong, disconnected downspouts, or downspouts that drain too close to the foundation. These are some of the most common causes of wet basements I see in this area. And they're almost always completely fixable.

Check these every spring:

• Are gutters still firmly attached, or are there gaps between the gutter and the fascia board?
• Do downspouts extend at least 4–6 feet away from the house?
• Is the ground around your foundation graded away from the house or toward it?
• After a rain, does water pool near your foundation?

The Plumbing Reality

Frozen pipes are a fact of life in Wisconsin. Most of the time, a pipe that freezes and thaws is fine. But occasionally, the expansion causes a micro-crack that you won't notice until the temperature rises and water starts running through again.

Early spring is a good time to check under sinks, in utility rooms, and in any space that's against an exterior wall. Look for moisture, water stains, or soft spots in cabinetry below pipes.

My Honest Take

A lot of this stuff gets caught during a routine home inspection, which is exactly why I recommend 11th-month warranty inspections for new builds and annual maintenance inspections for older homes. Wisconsin's climate is harder on houses than most people realize when they buy.

If you've got a specific concern about your home after this winter, reach out. I'm happy to talk through what you're seeing before you commit to an inspection or a contractor.

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Eric Bjorkquist is a CCPIA Certified Commercial Inspector and InterNACHI Certified Professional Inspector serving Central Wisconsin. Schedule an inspection at eandrinspections.com or call 715-213-4554.