How to Keep Your Car Clean Through a Pacific Northwest Winter

To keep your car clean through a Pacific Northwest winter, wash it about every two weeks, keep rubber mats in it, and don't let moisture sit in the carpets. Put a layer of protection on the paint before the wet months start, and most of the winter mess rinses off instead of building up.

Our winters aren't about snow so much as months of wet roads. Here's what actually works, what you can handle yourself, and when it's time to bring in a detailer.

Why winter is hard on a car here

The rain isn't the main problem. Wet roads throw oil, tire dust and brake dust onto your lower panels and wheels, and the car rarely dries out fully before the next storm. Parked outside, it also collects leaves, fir needles and sap.

Western Washington doesn't get the heavy road salt you'd see in the Midwest, but crews do use de-icers and sand when ice is in the forecast, especially on the mountain passes. If you drive I-90 over Snoqualmie to ski, rinse the underbody and wheel wells when you get home.

The inside has its own problem. Wet shoes, jackets and umbrellas bring water and grit into the cabin every day, and with the windows up, that moisture has nowhere to go.

On the outside

Wash every two weeks or so. A rainy day doesn't count as a wash. Rain moves the dirt around, and it dries back on the paint as a film.

Rinse before you touch the paint. Winter grime is full of fine grit. Rinse or foam the car first, then use a clean mitt and two buckets, so the dirt goes into a rinse bucket and not back on the paint.

Don't skip the low spots. Rocker panels, the lower bumpers, wheel wells and door jambs collect the most grime and get the least attention. Open the doors and wipe the jambs, or that dirt ends up on your pants.

Never dry-wipe a dirty car. Wiping road film off with a dry towel or your sleeve drags grit across the clear coat and leaves scratches.

Keep the wheels clean. Brake dust sticks harder when it stays wet. Use a cleaner labeled safe for your wheel finish, and clean the wheels with separate tools from the ones you use on the paint.

Clear out leaves and needles. Check the channel at the base of the windshield and around the sunroof. Wet debris there can hold moisture and block drains, which is one way water ends up inside the car.

Skip the wash on freezing days. Water can freeze in door seals and locks. Wait for a day above freezing, and never pour hot water on an icy windshield, since the sudden temperature change can crack the glass.

On the inside

Use rubber mats with raised edges. They hold the water and grit so your carpet doesn't. Use mats made for your car, hook them in place, and never stack one on top of another, because a loose mat can catch the pedals.

Dump the mats after wet days. Pull them out, empty them, and let them dry somewhere other than the car.

Run the defroster with the A/C on. The A/C dries the air, even in cold weather. Keep it on fresh air, not recirculate, and you'll clear the moisture along with the fogged glass.

Clean the inside of the windshield. Film on the glass gives moisture something to cling to, so a clean windshield fogs up less. A clean microfiber towel and glass cleaner are all you need.

Check for damp carpet. Press a dry paper towel into the carpet under the mats every few weeks. If it comes up wet, dry it out soon. If it keeps coming back, you probably have a leak, so have a shop check the seals and drains.

Take care of smells early. A musty smell that stays after the car is dry can mean mold. That's a job for steam, extraction and sanitizing, not an air freshener.

A simple winter schedule

What to book when you want it handled

These are starting prices, plus tax. We confirm your exact price on a quick call, based on your car's size and condition.

Premium Wash & Seal includes a 3 to 6 month coating and cleans the undercarriage, which makes it a good one to book in the fall. For longer protection, our ceramic coatings start at $1,295 plus tax. Dirt rinses off a coated car more easily, though it still needs regular washing, and every coating requires a Coating Care Plan to keep the warranty valid.

If you'd rather not think about any of this, ask about a monthly or bi-monthly maintenance plan. We come back on a schedule, so the grime doesn't get ahead of you.

How it works

We're based in Renton and come to homes and offices within 20 miles, including Kent, Bellevue, Newcastle, Issaquah, Sammamish, Maple Valley and Covington. Our van carries its own water tank and generator, so we only need a place to park next to your car.

To get the exact price for your car, send the quote form or call (425) 442-6132.