St. Louis winters are not long, but they are messy. How road salt, slush, freeze and thaw mud and overwintering insects affect a Chesterfield house, and how to keep floors and entries ahead of them.
A St. Louis winter rarely buries a house in snow for weeks. What it does instead is cycle: a few inches of snow, a round of road salt, a thaw that turns the yard to mud, then another freeze. Each cycle brings something new across the threshold, and the entry floors of a Chesterfield house take the worst of it.
This guide covers what the local winter numbers look like, what salt and slush do to the finishes common in local homes, and a simple routine that keeps the damage small until the spring rains take over.
The 1991 to 2020 normals at Lambert Airport show about 16.6 inches of snow in an average year, with January the snowiest month at about 5.7 inches. The area averages about five days a year with an inch or more of snowfall. January's normal average temperature is 32.1 degrees, almost exactly at the freezing line.
That last number explains the mess. With about 85 nights a year at or below freezing, and the median last spring freeze not until around April 2, the ground freezes and thaws over and over. Snow melts into slush, roads get salted again and again, and yards and driveways cycle between frozen and muddy. Every shoe and paw that comes in carries some of all three.
Road salt dissolves in meltwater and dries as a white film. On sealed hardwood, it dulls the finish and, left long enough, can wear it down in a path from the door. On tile and stone, it settles into grout lines and leaves a chalky haze. On carpet near the door, it stiffens the fibers and attracts more dirt.
Grit is the other half. The sand and fine gravel mixed with salt act like sandpaper when someone walks across a floor in wet boots. The damage is slow, but in a city where the median house was built in 1982, a floor may already be decades into its finish, and slow damage adds up.
Most of the work happens in the first few feet inside the door. Stop salt there and the rest of the house stays clean.
Winter is when two Missouri insects stop being an outdoor problem. Asian lady beetles gather inside homes in large numbers late in the fall and can leave a yellow staining fluid on walls and fabrics. Brown marmorated stink bugs push through cracks and building openings to spend the winter indoors, and on a sunny winter afternoon both can show up on window frames and around light fixtures.
The Missouri Department of Conservation advises vacuuming lady beetles rather than sweeping them, since sweeping can make them release the fluid that stains. Use a hose attachment, empty the canister or bag outside, and wipe sills afterward. Cleaners will follow the same method on visits through the cold months.
Through the coldest stretch the windows stay shut and the furnace runs. Dust that would drift out of an airy house in spring stays in, settling on vent covers, ceiling fans that nobody turns on and the tops of door frames. Guest rooms and finished basements that see little use in January can collect a surprising layer.
A recurring plan through the winter keeps that dust from piling up. Bi-weekly visits suit most four bedroom homes, and households with dogs or a lot of foot traffic may want weekly visits during the snowiest weeks. See the recurring cleaning guide for help choosing.
Once the last freeze has passed, usually around the start of April, salt stops coming in. That is the moment for a One-Time Deep Clean: baseboards along the entry paths washed by hand, vents and fans wiped after a winter of furnace use, and window tracks cleared before the wettest months of the year. April, May and June bring the most rain at Lambert, so the reset gives the house a clean starting point for mud season.
The questions Chesterfield homeowners ask most often about this topic, answered plainly.
TotalCare Cleaning will service Chesterfield and surrounding areas with background-checked cleaners and is insured up to $1 million. Re-clean guarantee: if we missed something, tell us by the end of the next day and we come back to fix it. Beyond Clean. TotalCare.
