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House washing and pressure washing in Naperville, IL

Green streaks on the north side, gray film everywhere else? We wash siding with low pressure and the right cleaner, clean driveways and patios, and wash every house before we paint it.

  • Phones answered 24/7
  • Booked from the Mecan Drive office
  • Exterior season late April into October
House Washing & Pressure Washing in a Naperville home

This job at a glance

Work type
Exterior painting
Season
Late April into October
Office
Mecan Drive, Naperville
Phones
Answered 24/7

Updated October 2026

The short version

House washing in Naperville, IL uses low pressure and a cleaner that kills mildew, because high pressure can force water behind siding and strip paint. Concrete, pavers and walks take more pressure. We book washing from late April into October, and every exterior paint job we do starts with a full wash and a dry day.

Soft washing versus pressure washing

Siding being soft-washed to remove mildew

Most of a house should not be pressure washed. A high-pressure stream can drive water behind vinyl siding and into window frames, raise the grain on wood and strip paint that was still sound. Siding, trim and painted surfaces are washed with low pressure and a cleaner that breaks down mildew and dirt, then rinsed.

Hard surfaces are different. Concrete driveways, walks, patios and pavers take higher pressure and a surface cleaner that keeps the stripes out. We match the method to the surface, and we protect plants, outlets and lights before any water goes on.

What is included in a house wash

  • Plants wet down and covered
  • Outlets, lights and fixtures protected
  • Windows closed and checked
  • Low-pressure wash on siding and trim
  • Mildew cleaner on shaded walls
  • Rinse from top to bottom
  • Surface cleaner on concrete
  • Walks and patio rinsed clean

Siding Wash Before Painting

Paint does not bond to dirt, chalk or mildew, so every exterior job we do starts with a full wash. Siding, trim and soffits are cleaned with low pressure and a cleaner suited to the surface, then rinsed top to bottom. Chalky aluminum and old paint get extra scrubbing where the chalk is heavy. The house then needs a full dry day before scraping or priming, which is built into the schedule from the start, not squeezed in. Any loose paint the wash lifts is a sign that area needs scraping before primer.

Driveways, Walks and Patios

Concrete and pavers collect tire marks, leaf stains, moss in the joints and the gray film that makes a house look neglected. We clean them with a rotary surface cleaner that gives an even result without the wand stripes, then rinse the joints and edges by hand. Oil stains lighten but rarely disappear entirely. Pavers can be resanded and sealed after cleaning if you want, which we quote as a separate line. Rust and fertilizer stains get a separate treatment where they will lift.

Driveway half cleaned with a surface cleaner

Green Mildew on Shaded Walls

North walls, walls behind shrubs and siding under trees stay damp longer, and green or black mildew grows there first. Pressure alone pushes it around; it needs a cleaner that kills it, enough dwell time and a thorough rinse. We spray the affected walls, let the cleaner work, and rinse with low pressure. Cutting back shrubs that touch the siding slows the regrowth; we can point out which ones are holding moisture against the house. A follow-up rinse a few days later is not usually needed once the cleaner has done its work.

Washing inside the Chicago-area season

O'Hare averages its last spring freeze around April 23 and its first fall freeze around October 13, with the colder outlying suburbs freezing near October 3. Washing needs water lines on and temperatures above freezing so rinse water does not ice on walks and siding. Spring washes clear the winter grime before painting season, and a fall wash keeps mildew from settling in over winter.

Signs the house needs a wash

Green or black streaks

Mildew and algae on shaded walls and under eaves.

Chalky film on your hand

Breaking-down paint or aluminum coating.

Gray, dull siding

Dirt and pollution film that dulls the color.

Slippery, dark concrete

Algae on walks and patios is a fall risk.

How we wash a house

  1. 1

    Protect

    Plants, outlets, lights and windows checked and covered.

  2. 2

    Apply cleaner

    Mildew and dirt cleaner on siding, with dwell time.

  3. 3

    Rinse

    Low pressure from top to bottom.

  4. 4

    Clean concrete

    Surface cleaner on drives, walks and patios.

  5. 5

    Final rinse

    Plants and walks rinsed, covers removed.

What moves the price of washing

Washing is priced by the area and the surfaces, not by the hour.

  • Siding area and the number of stories
  • Heavy mildew or algae that needs more cleaner
  • Driveway, walk and patio square footage
  • Plants, decks and outlets to protect
  • Washing alone or as prep before painting

Answers

House Washing & Pressure Washing questions from Naperville homeowners

Still deciding? A painter can answer the rest on the phone, any hour.

Call (630) 866-1015

Related work

Jobs that often go with this one

Exterior House Painting

Body, trim and doors, prepped and painted inside the outdoor season.

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Vinyl & Aluminum Siding Painting

Faded vinyl and chalky aluminum siding painted with the right coating.

More on siding painting

Cedar Siding & Shake Staining

Cedar siding and shakes cleaned and stained, not just sealed over.

More on cedar siding staining

Wash off the winter before painting season

Call any hour. Tell us which surfaces need cleaning and we will set a dry day.

(630) 866-1015Phones answered 24 hours a day

Find us

Call, or stop by the Naperville office

Hours
Phones answered 24 hours a day, 7 days a week
Service office
2319 Mecan Dr, Naperville, IL 60564
Head office
138 Industrial Drive, Gilberts, IL, 60136
Coverage
Naperville and the western suburbs, see every community
Call (630) 866-1015Answered 24/7