Exterior Window Cleaning: What Is Included, How Often You Need It, and What It Costs

What a professional exterior window cleaning actually covers, why the water matters more than the soap, how often the outside glass needs it, when to add the interior, and what the job costs.

The short answer

Exterior window cleaning is the outside of every pane washed with purified water through a water-fed pole, plus the parts most people forget: screens hand-rinsed, frames wiped, tracks vacuumed. Done right, the glass dries without a single spot and stays that way for months. Most homes need the outside cleaned about twice a year, once after the spring pollen and once in the fall. A full interior-and-exterior clean typically runs 150 to 350 dollars depending on the number of windows and the height of the house; exterior-only is less, and you get the number before anyone touches a window. The full picture of the service is on our Window Cleaning Service page.

What is actually included

Two companies can both say "window cleaning" and mean very different things. Here is what a standard exterior clean from us covers, pane by pane:

• Every exterior pane, scrubbed with a soft brush and rinsed with purified water. Upper floors are reached from the ground with a water-fed pole, so no ladder leans on your gutters or siding.
• Screens, hand-rinsed. Pollen caked on a screen makes clean glass look tired within a week and blows right back onto the pane. They come off and get rinsed separately.
• Frames, wiped. The dirt line at the top of a frame is what runs down over the glass with the first rain if nobody touches it.
• Tracks, vacuumed. Grime packed in a track holds moisture against the hardware and shortens its life.
• A spot check from the ground when the glass is dry, and any missed edge gets redone before we leave.

Screens with heavy buildup sometimes need real hand-scrubbing. When they do, it is quoted upfront, not added to the invoice afterward.

Why the water matters more than the soap

Most streaks and spots on exterior glass are not dirt. They are minerals left behind when tap water dries. That is why a bucket of soapy water and a squeegee outside often looks worse by the afternoon than it did before you started. Purified water has nothing dissolved in it, so it dries clean, and because there is no detergent film on the glass, pollen and dust have nothing to stick to. The outside of your house gets the purified-water treatment; the inside still gets a hand-detailed squeegee, because an interior pane is a hand job, not a hose job.

How often the outside glass needs it

Twice a year is the right rhythm for most homes around here:

• Late spring, once the pollen season is over. Cleaning in the middle of it is throwing money at a yellow cloud.
• Fall, before the holidays and before the low winter sun starts lighting up every spot on the glass from the inside.

Three things push a home toward a third visit: heavy tree cover, a busy road out front, and sprinkler heads that hit the windows. The sprinklers are the one you can fix for free. Aim them away from the house and a clean lasts noticeably longer.

Exterior only, or add the interior?

The outside takes the weather, so it needs cleaning more often than the inside. The inside collects fingerprints, pet nose prints and the haze from cooking, and it shows up most on the windows you look through every day. A good pattern for most families is interior and exterior together once or twice a year, and exterior-only in between. If you are not sure, tell us which rooms bother you and we will tell you honestly whether the inside is worth adding this visit.

What it costs

Pricing depends on the number of panes, how many stories, whether the interior is included, and the condition of the screens and tracks. A full interior-and-exterior clean typically runs 150 to 350 dollars: single-story homes toward the low end, two-story homes toward the high end. Exterior-only is less than the full job and gets quoted upfront. Window cleaning is also one of the services that pairs well with a house wash or gutter cleaning on the same visit, and new customers get 50% off a secondary service when it is booked with a primary one. The price-by-home table is on the DIY vs pro window cleaning guide.

Doing the outside yourself

Ground-floor glass on a single-story home is a reasonable DIY job if you have the time. Use a soft brush, rinse with as much clean water as you can, pull and rinse the screens, and do it on an overcast day so the glass does not dry mid-wash. What we would not do is put a ladder against the house to reach second-story windows, and we would not use a pressure washer on glass or frames. The water-fed pole exists so nobody has to do either. The rest of the home's yearly list is in the exterior maintenance cycle.

Common questions

What does exterior window cleaning include? The outside of every pane cleaned with purified water through a water-fed pole, a hand-rinse of the screens, a wipe of the frames and a vacuum of the tracks. Upper floors are reached from the ground, so no ladder goes against your gutters or siding.

How often should the outside of my windows be cleaned? About twice a year for most homes. Once after the spring pollen and once in the fall before the holidays is the rhythm that keeps glass clear year-round. Homes under heavy tree cover or next to a busy road sometimes want a third visit.

Why purified water instead of soap and a squeegee outside? Tap water carries minerals that dry into spots. Purified water has nothing in it to leave behind, so the glass dries spot-free with no detergent film for pollen to stick to. Interior glass is still hand-detailed with a squeegee, because the inside of a window is a hand job.

Should I add the interior? If the inside glass has fingerprints, pet nose prints or a haze from cooking, yes. Most homes do interior and exterior together once or twice a year and exterior-only in between. A full interior-and-exterior clean typically runs 150 to 350 dollars depending on the number of windows and the height of the home; exterior-only is less, and we quote it upfront.

Do you clean screens and tracks? Yes, on every standard clean. Screens are hand-rinsed and tracks are vacuumed. Screens with heavy buildup may need extra hand-scrubbing, and that is quoted before the work, never added to the invoice afterward.

How long does clean exterior glass stay clean? Three to six months in a normal season. The two things that shorten it are sprinklers hitting the glass and heavy pollen. Keep sprinkler heads aimed away from the house and the clean lasts noticeably longer.