5 Gutter Jobs You're Forgetting Before Winter (Do This Now)

TL;DR: Most winter water damage traces back to gutters that were never fully prepped, not just cleaned of leaves. Five jobs matter most: full debris removal, downspout flow checks, hanger and fastener inspection, sealing seams and joints, and confirming the slope still drains toward the downspouts. Skipping any one of these can lead to ice dams, fascia rot, or a foundation problem that costs $3,000 or more to fix.

_Last reviewed: July 2026 · 6 min read_

You cleared the leaves out in October and figured that was the job done. It wasn't. Gutters fail in winter for reasons that have nothing to do with leaves sitting in the trough, and by the time you notice water stains on the ceiling or ice hanging off the roofline, the fix is a lot more expensive than an hour with a ladder in November.

Okoniq Property Hub lets you log gutter inspection dates and photos per property, so you're not guessing which house got checked and which one didn't.

Why isn't cleaning out leaves enough?

Because leaves are only part of what clogs a gutter, and a visually "clean" gutter can still be blocked lower down. Shingle grit, seed pods, and compacted debris from the last two seasons settle at the bottom of the trough and around the downspout opening, invisible from a quick glance over the edge.

A gutter that looks empty from above can still be 70% blocked at the outlet where it connects to the downspout. Water backs up, sits against the fascia board, and in freezing temperatures that standing water becomes the seed of an ice dam. If you've already noticed granules or curling on the roof itself, that's a separate but related problem worth checking, covered in 5 reasons your roof is aging faster than it should.

Are your downspouts actually draining, or just routing water to the wrong place?

Run a hose test at each downspout before the first freeze, because a downspout that drains slowly in October will freeze solid in January. Pour a full 5-gallon bucket down the top of the downspout and time how long it takes to exit at the bottom. Anything over 15-20 seconds for a straight run suggests a partial clog, usually a nest, a crushed elbow, or ice already forming from an earlier cold snap.

Just as important: where does the water go once it exits? If the extension has drifted, or a splash block cracked over the summer, water is landing 6 inches from your foundation instead of the 4-6 feet it needs. That's the exact setup described in 6 downspout mistakes that send water into your basement, and freezing temperatures make the consequences worse, not better, because the water that pools near the foundation freezes and expands against the concrete.

Are the hangers and fasteners still holding, or has one season of ice already loosened them?

Check every hanger bracket by hand, because a gutter that's pulling away from the fascia by even half an inch will collect ice unevenly and sag further under the weight. Grab the gutter every 3-4 feet and give it a firm push. It shouldn't move. If it flexes or you see gaps between the gutter and the fascia board, the fasteners have likely backed out from thermal expansion over the past year or two.

This matters more in winter because a gutter full of ice can weigh 4-5 times what it weighs full of water. A section held by loose spikes or worn hangers can tear off the house entirely under that load, taking a chunk of fascia with it. Re-driving spikes or swapping to screw-in hanger brackets (roughly $1-2 each) is a cheap fix now versus a fascia repair later.

| Fastener Type | Typical Lifespan | Winter Reliability | |---|---|---| | Spike and ferrule | 8-10 years | Loosens with freeze-thaw cycling | | Hidden hanger (screw-in) | 20+ years | Holds tight through ice loads |

Are the seams and end caps still sealed, or have they dried out and cracked?

Inspect every seam, corner, and end cap for gaps, because a $6 tube of gutter sealant applied now prevents the slow leaks that stain fascia and soffit all winter. Sealant shrinks and cracks with UV exposure and temperature swings, typically needing a fresh bead every 2-3 years even if the gutter itself is in good shape.

Look specifically at the seams where two gutter sections meet and at the inside corners, since those are the spots that see the most water pressure during a heavy melt. A small drip you'd barely notice in summer becomes a steady icicle in January, and icicles that reach the ground can trap moisture against your siding for weeks. If you're also seeing water pooling in spots that don't obviously connect to the gutter system, it's worth ruling out other causes covered in 5 signs your downspouts are dumping water in the wrong place.

Has the slope shifted enough that water pools instead of flowing?

Gutters need a slope of about 1/4 inch per 10 feet toward the downspout, and that pitch can shift over time as hangers loosen or a ladder leans on the wrong spot during a cleaning job. Pour water at the far end from the downspout and watch it travel the length of the run. If it slows or stops anywhere before reaching the outlet, you have a low spot that will fill with ice first and drain last every time it thaws.

Low spots are also where the heaviest ice load concentrates, which is the same weight problem discussed above with hangers, so a sagging section and a bad hanger often show up together. A homeowner catching this in November with a bucket of water spends 20 minutes; catching it in February usually means a contractor and a scaffold.

FAQ

How often should gutters be cleaned before winter?

Most homes need one thorough cleaning in late fall, after the majority of leaves have dropped, and a second check in early winter if the property has pine trees or is under heavy tree cover, since needles and seed pods keep falling into December.

What temperature should I finish gutter prep by?

Aim to have all five jobs done before nighttime lows consistently drop below 32°F, since ice inside a gutter or downspout makes cleaning and adjustments far harder and can crack plastic components.

Can I skip gutter guards if I do these five jobs every year?

Gutter guards reduce debris buildup but don't replace inspection. Even homes with guards installed still need the downspout flow test and hanger check, since guards don't stop seams from cracking or fasteners from loosening.

How much does ice dam damage typically cost to repair?

Ice dam repairs range from $500 for minor fascia and gutter fixes to $3,000-$8,000 when water has gotten under shingles and into the attic insulation or ceiling drywall, based on typical insurance claim ranges reported by home insurers.

Is it safe to do this myself, or should I hire someone?

A single-story home with a stable ladder is manageable for most homeowners, but two-story homes, steep roof pitches, or any sign of existing ice should go to a licensed gutter or roofing contractor instead of risking a fall.

This is educational information, not a substitute for a professional roof or gutter inspection. Call a licensed contractor if you're unsure about safety on a ladder or roof, especially once temperatures are near or below freezing.