What window cleaning includes.
The outside of every window, top floor to bottom: the glass, the frames and sills around it, and the screens and storm windows. Finished streak-free and lint-free, so the difference shows from inside.
For homes and businesses across Suffolk County.
Exterior glass
Every pane, second and third story included.
Frames and sills
Where the dirt and cobwebs collect.
Screens and storm windows
Streak-free finish
Lint-free too.
Upper floors, no ladder.
Second-story windows are where window cleaning gets dangerous: a ladder against the house, one arm reaching, the other holding on. It’s why most people put it off.
Our techs use water-fed poles, soft-brush systems and high-reach equipment built for upper-story glass, and work to company safety guidelines. You never have to touch a ladder.
How we work
- Water-fed polesReach second- and third-story glass.
- Soft-brush systemsGentle on glass and frames.
- Company safety guidelinesTrained techs, every job.
- You never touch a ladder
How we clean windows.
Set up safely
Trained techs working to company safety guidelines, with high-reach equipment for second- and third-story windows.
Scrub the glass
Water-fed poles and soft-brush systems loosen the dirt, salt residue and spots on every pane.
Frames, sills, screens
The frames and sills around the glass, plus screens and storm windows — not just the pane in the middle.
Rinse streak-free
A clean rinse for a streak-free, lint-free finish, so what you see from inside is glass, not streaks.
Signs your windows are due.
Long Island winters are hard on glass. Storms leave dirt, salt residue and water spots behind, and by spring the house looks dull from the street even when it’s spotless inside.
Spring is when most people book, with early summer close behind.
Look for
- Cloudy glassA haze you can't wipe off from inside.
- Streaks from rainwaterDried runs down the pane.
- Dirt around the framesBuilt up along sills and corners.
- Spots and cobwebsMost visible on the front windows — the ones guests see.
What it costs.
There’s no flat price: a ranch with a dozen windows and a three-story shingle house with a sunroom aren’t the same job.
Free estimate. The price you’re quoted is the price you pay.
How many windows
Counted by window and pane — divided-lite and French windows take longer than single panes.
How high
Ground-floor glass is quicker than second- and third-story windows reached with water-fed poles.
Screens and storms
Cleaning screens and storm windows adds time, so it's priced in only when you want them done.
While we’re outside.
Dirty windows rarely come alone: the gutters above them and the siding around them take the same winter.
Before you book.
Longer answers to the questions people ask before they call.
Time to Clean Your Gutters and Windows
Tired of streaky windows and overflowing gutters? Our Suffolk County team offers safe, top-rated window and gutter cleaning—perfect for multi-story homes.
Read the guide →
Spring Exterior Cleaning Checklist for Long Island Homes and Businesses
Use this spring exterior cleaning checklist to spot algae, stains, and buildup around your home. Learn when professional cleaning is the best solution.
Read the guide →
Frequently asked questions
Straight answers on cost, reach and timing.
How much does window cleaning cost?
It depends on how many windows there are, how high they go, and whether screens and storm windows are included. The estimate is free, and the price you're quoted is the price — no hidden fees.
What's included?
The outside of every window: the glass, the frames and sills, and screens and storm windows. Second- and third-story windows included.
Can you reach second- and third-story windows?
Yes. Water-fed poles and high-reach equipment clean upper-story glass properly — and you never have to touch a ladder.
When is the best time to have windows cleaned?
Spring is the most popular: winter storms leave the glass covered in dirt, salt residue and water spots. Early summer is the other common time.
Do you clean windows for businesses?
Yes — homes and commercial properties across Suffolk County.
Can you do the gutters or siding at the same time?
Ask for them together on the quote form. K.O.S. cleans gutters and soft-washes siding and roofs too, and one free estimate covers the lot.
Get a free window cleaning quote.
Real person · free estimates · no obligation
Call for a quote(631) 560-8999