How often should you wash a house in Utah?
Once a year is the right answer for most homes along the Wasatch Front. It is also the least useful answer, because the interval is set by exposure rather than by the calendar. A shaded north wall and a sun-baked south wall on the same house genuinely need different schedules, and knowing which one you have is worth more than any general rule.
- Once a year suits most homes here
- Orientation matters more than age or material
- Flatwork has a different clock from walls
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Once a year, and here is what moves it
For a typical home in the Salt Lake or Ogden valleys, an annual wash keeps the exterior where you want it and stops anything becoming an actual problem. That is the default we would give anyone who asked without showing us the house, and for most people it is correct.
What makes it only a default is that the two things driving dirt on a wall, moisture and shade, are not evenly distributed around a building. The north elevation of a house holds moisture far longer than the south, so it grows algae and mildew while the sunny side is merely dusty. Two walls of the same house, the same age, the same material, on genuinely different schedules.
The practical version of this: judge the house by its worst wall, not its average. If the north side is showing green or black streaking and the front looks fine, the house is due. Waiting until the front looks bad means the shaded side has been growing for another full season, and growth that has been established longer takes more work to kill properly.
Signs it is due now
- Green or black streaking on a shaded wall
- A chalky, dull look to the siding
- Spider webbing under the eaves
- Dark growth on north-facing surfaces
- Gutter faces streaked with tiger stripes
Six things that matter more than the calendar
Which way the wall faces
The single biggest factor. North-facing and shaded walls stay damp for hours longer after every rain and every sprinkler cycle, and algae needs exactly that. A north wall may want attention twice as often as the south side of the same house.
Trees and overhang
Shade extends the drying time, and organic debris feeds growth. Homes with mature trees close to the wall, or deep eaves and covered porches, run shorter intervals than open lots.
Sprinkler overspray
Irrigation hitting the house does two things at once: it keeps a strip of wall permanently damp, and on our water it leaves mineral deposits. That is a separate problem covered on hard water stain removal, and it is worth fixing at the head rather than washing twice a year forever.
Winter inversion
The valley traps particulates for weeks at a time through the cold months, and it settles on everything. It is a large part of why so many homes here look tired by March even without any biological growth at all.
Dust, fields, and construction
Homes on the edge of open ground, near active building, or along a busy road pick up a great deal more airborne grit. In a dry climate that never gets properly rinsed off by weather.
What the wall is made of
Vinyl shows streaking readily and cleans easily. Stucco holds growth in its texture and needs a gentler, slower approach, covered on will pressure washing damage stucco. Brick sits somewhere between the two.
Flatwork runs on a different clock
Driveways, walks, and patios do not follow the same schedule as the siding, because what dirties them is different. Winter is the driver. Road salt and de-icer come home on the car and sit on the concrete, and clearing that off in spring matters for the concrete itself rather than just the look, because the salt keeps working on the surface as long as it is there.
The other flatwork clock is staining, and it is event-driven rather than seasonal. An oil drip, a rust spot from a fertilizer spill, a tire shadow that appeared over one hot summer. Those are all worth dealing with in the season they happen, because every one of them gets harder to remove with age. There is more on that under oil and stain removal and rust stain removal.
Windows are different again, and they are mostly about irrigation rather than dirt. Glass that catches sprinkler overspray needs attention on the sprinkler's schedule, not the year's, because mineral deposits on glass can etch permanently if they are left long enough.
Rough intervals
- House wash, once a year for most homes
- Shaded or north elevations, more often
- Driveways and walks, spring, after the salt
- Windows, depends on sprinkler exposure
- Stains, in the season they appear
What most homes here actually need
Spring: clear the winter off the concrete
Salt, de-icer, and inversion grime. This is the one with a reason beyond appearance, because salt left on concrete keeps working at the surface.
Late spring or early summer: wash the house
After the wet season has finished feeding whatever is growing on the north side, and before the hottest part of the year. It is also when any winter damage becomes visible.
Mid summer: check the shaded elevations
Not a wash, just a look. If the north wall is streaking again by August, your house is on a shorter interval than average and it is worth knowing that rather than discovering it next spring.
Any time: deal with a stain when it happens
This is the one that actually saves money. Fresh oil, fresh rust, and a fresh tire mark come out. The same stains after three years often only lighten. Starting prices for everything are on the cost page.
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Real reviews from recent Dirt Gone Wash Co customers.
"Saya came to do my siding and back patio. He gave me a great deal! He was professional and reliable and had a great price compared to others I received. I highly recommend."
Carrie A. · Google review
"Saya came out and cleaned my trash bins and driveway, and I was really impressed with the results. He was honest from the start and explained that the oil stains on my driveway would need a hot water treatment to fully remove them."
Irma B. · Google review
"They do a very good job and I'm very impressed with their work. Super professional, 10/10 recommend!"
Tiana I. · Google review
Washing frequency questions
How often should I pressure wash my house in Utah?
What time of year is best to wash a house here?
Why does the north side of my house get dirty faster?
Does washing more often damage my siding?
Will washing once a year stop the algae coming back?
My sprinklers hit the house. Does that change things?
Do you serve the whole Salt Lake to Ogden corridor?
Where we work
Dirt Gone Wash Co. is a service-area business covering the corridor from Salt Lake City through Davis County to Ogden. Pick your city for local pricing and conditions.
Not sure whether yours is due?
Send a photo of the shadiest wall. That is the one that tells us.