The Complete Madison Winter Gutter Cleaning Guide

Why Madison’s freeze-thaw cycle destroys clogged gutters

Madison averages 58 freeze-thaw cycles per winter — the temperature crosses 32°F in both directions roughly every 36 hours from mid-November through mid-March. That number is higher than most of the Upper Midwest because Lake Mendota and Lake Monona moderate overnight lows just enough to keep temps oscillating instead of holding steady. For a healthy, empty gutter, this is meaningless. For a clogged one, it’s destructive.

Here’s the sequence that breaks gutters in Dane County every winter:

1. Leaves and shingle grit pack the trough. By early November, a gutter under even a single mature maple can be 60–80% packed. Leaves decompose into a sponge-like mat. Shingle grit (from asphalt shingle wear) settles under it.
2. The first freeze turns the mat into a plug. Water that’s trapped in the organic mat freezes first. The plug blocks any further drainage.
3. Snowmelt has nowhere to go. On a sunny 38°F day, snow on the warm upper roof melts. That water runs down, hits the ice plug at the eave, and pools behind it on the roof deck.
4. Pooled water refreezes overnight. When temps drop back to 22°F at 2 a.m., the pool becomes an ice dam on the roof itself — no longer just in the gutter.
5. Capillary action drives water under the shingles. The next day’s melt finds the path of least resistance: backward, under the shingle course, onto the roof decking. That water then travels along the decking until it finds your attic insulation, your drywall, or the top of a window frame.

This is why a homeowner in Schenk-Atwood can get a ceiling stain in January from a gutter that was clogged in October. The damage is almost always upstream of where the stain appears.

The Madison gutter calendar: exactly when to clean

Every year we get the same question in mid-September: “Is it too early to clean gutters?” Yes. Every year we get the same question on December 3rd: “Can you still get out there before the snow sticks?” Maybe. Here is the Madison-specific timing that actually works:

If you can only afford one cleaning per year, make it the fall round. Spring overflow causes cosmetic staining. Winter overflow causes structural damage.

How we clean gutters: the four-step method

Most “cleaning” you’ll see online is a leaf blower and a prayer. That gets the top layer out. It does nothing for the compacted sludge underneath or the downspout clog at the elbow. Here’s what an actual professional gutter clean looks like.

1. 1

   Ground inspection

   Before a single ladder goes up, we walk the perimeter. Pitch issues, separated seams, loose hangers, staining under the fascia, downspout damage. This is where we catch the $400 problem before it becomes a $4,000 problem. You get a written inspection report either way.

2. 2

   Hand removal of bulk debris

   Gloves on, trough first. Bulk debris into a bucket. We don’t rely on blowers for this step — leaves stick together, and a blower just scatters the top layer while leaving the compacted mat behind. Every gutter gets hand-touched before anything else happens.

3. 3

   Soft-bristle wand and flush

   After bulk removal, we use a soft-bristle wand on low-volume water to loosen compacted sludge and shingle grit, then flush the trough the full length toward each downspout. This is how you actually get the trough clean, not just empty.

4. 4

   Downspout verification flush

   This is the step almost everyone skips. We flush every downspout from the top at full volume and watch the bottom for clear, full-pressure outflow within 10 seconds. If it doesn’t come out clean, we pressure-clear from the bottom. A clean trough with a clogged downspout is still a clogged gutter.

End-to-end, a typical two-story Madison home takes us 45–75 minutes. We photograph before-and-after on every job because most homeowners can’t safely verify the work themselves.

How to know when it’s time: 6-step self-inspection

You don’t have to guess. Walk through this once after the next rainstorm, and you’ll have a clear yes/no answer.

1. 1

   Check the calendar

   Target late October through mid-November in Madison. After peak leaf fall, before the first hard freeze.

2. 2

   Inspect from the ground after a rain

   Look for water overflowing the front edge, streaks on siding under the gutter, or downspouts that barely trickle. All three mean 'clean now.'

3. 3

   Look under the eaves

   If you see green or black staining on the fascia, water has been overflowing for weeks. Clean immediately and inspect for rot.

4. 4

   Check downspout outflow

   During the next rain, confirm every downspout is gushing within 30 seconds. A weak or dead downspout means a clog somewhere in the run.

5. 5

   Count trees within 30 feet

   More than three mature deciduous trees within 30 feet of your roof? You need at least two cleanings per year — spring and fall.

6. 6

   Decide: DIY or pro

   Single-story, gutters lightly clogged, good ladder, steady helper — DIY is reasonable. Two-story or higher, packed gutters, or uneven ground — call a pro.

If two or more steps point to “clean now” — don’t wait for the next storm to confirm. Book it.