Snohomish County gets over 37 inches of rain a year, and most of it falls between October and March. Once the fall storms start, small maintenance gaps turn into expensive repairs fast — a clogged gutter becomes a soaked fascia board, a patch of roof moss becomes a leak, and grime left on a driveway becomes a slip hazard once it freezes. Early-to-mid fall is the window to get ahead of it. Here's what to check.
1. Clear your gutters before the leaves finish falling
Douglas fir needles and bigleaf maple leaves are the two biggest culprits for clogged gutters in this county, and they don't fall on a tidy schedule — needles drop nearly year-round, while leaves come down hard in October and November. A gutter that looks clear in early October can be packed solid by Thanksgiving.
- Check that downspouts drain freely, not just that the gutter channel looks empty
- Look for water staining under the gutter line — a sign of a past overflow
- Clear gutter guards too — needles pile on top and block flow even with guards installed
If your property backs onto conifers, plan on a second cleaning in late fall after the bulk of the needle drop. See our full gutter cleaning service for details on what a professional visit includes.
2. Treat roof moss while it's still thin
Moss spreads fastest in the cool, wet months from October through February — exactly the window most homeowners aren't looking at their roof. Treating it now, while growth is still thin, is far cheaper and less invasive than removing thick moss mats in spring.
Look for green or dark patches along the shaded, north-facing sections of your roof and anywhere tree cover blocks direct sun. Left alone, moss lifts shingles and traps moisture against the roof deck, which shortens the life of the roof significantly. Our moss treatment service covers both removal and a preventive application for next season.
3. Wash windows before the fog and low light settle in
Snohomish County's short winter days mean every bit of natural light matters, and mineral streaks or grime buildup cut down what little daylight makes it through. Fall is also the last stretch of the year with dry enough weather for streak-free results — window cleaning during the wet season is possible, but results don't last as long.
Want us to handle the full list? We offer combined visits covering gutters, moss treatment, windows, pressure washing, and solar panels in a single appointment.
Get a Free Quote4. Pressure wash driveways and walkways before the first frost
Algae and moss buildup on concrete gets noticeably more slippery once temperatures drop and morning dew turns to frost. Pressure washing driveways, walkways, and steps in the fall removes that buildup while it's still manageable, rather than dealing with a slick, frozen surface in December. See our pressure washing service for driveways, patios, and siding.
5. Clean solar panels before the low-sun months
Solar output already drops in winter from shorter days and a lower sun angle — dirt, pollen, and moss buildup on top of that can cut production further. A fall cleaning before the low-light months means your system is running at full capacity for whatever sun Snohomish County does get through the winter. Our solar panel cleaning service uses a gentle, residue-free process safe for every panel type.
Put it all on one visit
Most Snohomish County homeowners don't need five separate appointments — gutters, moss, windows, pressure washing, and solar panels can typically be handled together in a single visit, which is both more convenient and more affordable than booking each service separately. If you're not sure what your home needs this fall, a quick call is the fastest way to find out.