Brooklyn brownstones are some of the most beautiful homes in New York City, and their windows are a big part of that charm. Tall parlor-floor windows, bay fronts, garden-level glass, and original wood sashes give these homes their character. They are also some of the hardest windows in the city to clean well.
In this guide, we explain what makes brownstone windows different, how to clean them safely, what to avoid, and when it makes sense to bring in a professional residential window cleaning team.
What Makes Brownstone Windows Different?
Most Brooklyn brownstones were built in the second half of the 1800s. Many still have original or older replacement windows, and they share a few features that change how they should be cleaned:
- Tall parlor-floor windows. The main floor above the stoop often has windows taller than a person, which are hard to reach at the top.
- Old wood sashes. Wood frames can be dry, painted many times over, or sticky, so forcing them open can crack paint or glass.
- Original or wavy glass. Older glass is thinner and scratches more easily than modern glass.
- Storm windows. Many homes have aluminum storm windows over the main windows, which doubles the number of glass surfaces.
- Window gates and ironwork. Garden-level windows usually sit behind security gates that make the glass hard to reach.
Because of these features, the quick spray-and-wipe approach that works in a modern apartment can leave streaks, miss half the glass, or even damage old windows.
Why Brownstone Windows Get Dirty So Fast
Brownstone blocks in neighborhoods like Park Slope, Fort Greene, and Carroll Gardens are full of mature trees. That means heavy pollen in spring, sap in summer, and leaf debris in fall. Add street traffic, construction dust from nearby renovations, and the city’s general grime, and windows can look cloudy just a few weeks after a cleaning.
Garden-level windows also catch soil splash from front gardens and planters, and parlor windows facing the street collect soot from passing cars and buses.
How to Clean Brownstone Windows Safely
If you want to clean the windows yourself, here is a safe, simple method for the windows you can reach from the inside:
- Dust first. Brush or vacuum dust and dead bugs off the frame, sill, and tracks so you do not turn dust into mud.
- Use a mild solution. A few drops of dish soap in a bucket of warm water works well. Skip ammonia and harsh cleaners on old wood and painted frames.
- Wash with a soft scrubber. Use a microfiber scrubber or soft sponge, never steel wool or abrasive pads.
- Squeegee from top to bottom. A good squeegee gives a much cleaner finish than paper towels. Wipe the blade after each pass.
- Detail the edges. Use a lint-free microfiber cloth to dry corners and wipe drips off the frame and sill.
Do not lean out of windows, stand on sills, or use a chair to reach the top of tall parlor windows. Falls from windows and ladders are a real risk, and the outside of upper-floor glass is best left to trained cleaners with the right equipment.
What Not to Do on Older Windows
- Do not force painted-shut sashes open. You can crack the glass or break the sash cords.
- Do not use razor blades on old or wavy glass unless you know the glass type. It can leave permanent scratches.
- Do not use pressure washers on windows. High pressure can push water behind frames and damage wood and plaster.
- Do not spray cleaner directly onto wood frames. Spray your cloth instead.
Cleaning Storm Windows and Window Gates
Storm windows protect your main windows and help with heating costs, but they also trap dirt between the layers. To clean both, you usually need to slide the storm panels up or remove them, clean every side, and wipe out the tracks before putting them back. Many homeowners find this is the most time-consuming part of the job.
For garden-level windows behind gates, open the gate if it has a release. If it is fixed, the glass behind it can often still be cleaned with narrow tools from the outside or from inside the home.
When to Call a Professional
A professional brownstone window cleaning makes sense when:
- You have upper-floor windows that do not tilt in.
- You want both sides of storm windows and main windows cleaned.
- Your windows have hard water spots, paint specks, or construction dust after a renovation.
- You simply do not have a free weekend to clean every window in a four-story home.
Our team cleans brownstones all over Brooklyn, including Brooklyn Heights, Cobble Hill, and Prospect Heights. We use soft tools and mild solutions that are safe for old glass and wood, protect your floors and furnishings, and clean every pane inside and out. See all the Brooklyn neighborhoods we serve.
How Often Should Brownstone Windows Be Cleaned?
For most Brooklyn brownstones, a full cleaning two to four times a year keeps windows looking great. Homes on busy avenues or under big trees may want a quick exterior cleaning between full visits, especially after spring pollen season and fall leaf season. Many homeowners schedule one cleaning in spring and one in fall so the house is bright for summer and the holidays.
Frequently Asked Questions
Can you clean the outside of upper-floor brownstone windows?
Yes. We use proper ladders and extension tools to safely clean upper-floor exterior glass wherever access allows.
Will cleaning damage my original windows?
No. We use soft tools and gentle, mild solutions and never force old sashes or scrape delicate glass.
Do you clean storm windows too?
Yes. We can clean both sides of storm windows and the main windows behind them.
How long does a brownstone window cleaning take?
Most single-family brownstones take a few hours, depending on the number of windows, floors, and storm panels.
Get Your Brownstone Windows Professionally Cleaned
Want spotless brownstone windows without climbing ladders or spending your weekend on it? Our insured Brooklyn team will take care of every pane, inside and out. Call (240) 230-7581 or request a free quote online.
