Professional Window Washing in Palo Alto , Los Altos, Menlo Park, Atherton, Portola Valley , Los Altos Hills
Crystal-Clear Windows. Detailed Service. A Finish You Can See.
Blue Oak Window Washing provides professional residential and commercial window cleaning for homes and businesses across Palo Alto, Los Altos, Los Altos Hills, Menlo Park, Atherton, Woodside, Portola Valley, and nearby Peninsula communities.
From detailed interior glass cleaning to purified-water exterior washing, we use professional equipment, careful preparation, and a service process designed to leave your property looking clean, bright, and cared for.
Call or text 650 643 6909 for a free on-site quote.
Window Cleaning Services We Provide
Every property is different, so we build the scope around your windows, access, and the level of detailing you need.
Our window washing service can include:
Interior and exterior window cleaning
Exterior-only maintenance cleaning
Screens, window sills, and tracks
French panes and divided-light windows
Skylights and high windows
Storefront and commercial glass
Post-construction or deep-detail window cleaning
Hard-water spot and mineral-deposit removal
Recurring maintenance plans for homes and businesses
We take the time to assess the glass, frames, access points, landscaping, and surrounding surfaces before starting work.
Spot-Free Exterior Window Cleaning With RO/DI Pure Water
For exterior windows, Blue Oak uses a professional RO/DI pure-water filtration system.
RO stands for reverse osmosis. DI stands for deionization. Together, these filtration stages reduce the minerals and dissolved solids found in ordinary tap water.
Why does that matter?
When ordinary water dries on glass, minerals can remain behind as spots, streaks, or residue. Purified water is designed to rinse more cleanly. As it dries, it leaves a clearer, spot-free finish without needing soap residue or repeated towel drying.
Benefits of RO/DI Pure-Water Window Cleaning
Helps create a clear, spot-free exterior finish
Reduces mineral residue left by tap water
Reaches upper windows without placing ladders against every wall
Allows us to clean frames and glass together
Helps protect landscaping, siding, and delicate exterior surfaces
Uses purified water rather than harsh chemicals for routine exterior cleaning
Produces a consistent finish across larger homes and commercial properties
Pure-water cleaning is especially useful for second-story windows, skylights, difficult-to-reach glass, solar panels, and exterior glass above landscaping or uneven ground.
Professional Equipment: XERO Pure MAX Plus
Blue Oak uses the XERO Pure MAX Plus water-purification system for professional exterior window cleaning.
This is not a household filter or a basic hose attachment. It is professional-grade equipment designed to produce purified water for water-fed pole cleaning.
The system includes enhanced filtration, larger DI capacity, and pressure monitoring to help provide reliable water flow while we work. The larger DI stage helps support efficient filtration on larger jobs, while the pressure gauge helps us monitor the system during service.
For homeowners, the result is simple: cleaner exterior glass, fewer water spots, and professional access to windows that are difficult to reach safely from the ground.
45-Foot Water-Fed Pole System
Blue Oak uses 45-foot extension water-fed poles to safely reach high exterior windows, upper-story glass, skylights, and difficult access areas.
The pole delivers purified water directly to a soft-bristle brush head. We gently agitate the glass, frames, and edges, then rinse with RO/DI purified water for a clean finish.
Why Water-Fed Poles Are a Better Option for Many Exterior Windows
Reach many second- and third-story windows from the ground
Reduce the need for ladders in landscaping and tight side yards
Allow us to clean glass and frames together
Improve access around rooflines, patios, and garden areas
Help protect siding, gutters, landscaping, and delicate hardscape
Create an efficient and consistent process for larger homes
We still use traditional hand-cleaning methods where they are the better choice, including interior windows, detailed panes, lower-level glass, tracks, sills, and areas that require close detailing.
Interior Window Cleaning With Care
Interior window cleaning is completed with attention to your home and furnishings.
We use professional tools and clean detailing cloths to remove fingerprints, dust, smudges, and everyday buildup from interior glass. We protect surrounding areas as needed and work carefully around window treatments, furniture, floors, and décor.
For a complete service, we can also clean:
Interior glass
Window sills
Tracks
Screens
Frames
Sliding doors
Mirrors
Glass railings
Skylights
Our goal is not simply to make the glass look better. We want your rooms to feel brighter and your views to look clear again.
Hard-Water Spot & Mineral Stain Removal
Hard-water spots are different from ordinary dirt.
They are often caused by sprinkler overspray, irrigation runoff, rainwater carrying minerals, mineral-rich tap water, or repeated exposure near pools and fountains. Over time, these deposits can leave cloudy spots, white mineral buildup, or rough-feeling residue on the glass.
For hard-water stain removal, Blue Oak uses Diamond Magic as part of a careful hand-detailing process.
Diamond Magic is designed to help remove water spots, mineral buildup, and surface staining from glass and other hard surfaces. We use it selectively, with attention to the glass condition and the severity of the buildup.
Our Hard-Water Removal Process
Inspect the affected glass and identify the source of the staining.
Test a small, less-visible area when appropriate.
Hand-treat mineral deposits using the proper product and technique.
Clean and rinse the glass thoroughly.
Review the result with you and identify any remaining permanent damage.
Important Note About Etched Glass
Some hard-water stains can be removed or significantly improved. However, long-term mineral exposure may permanently etch the glass surface. When that has happened, cleaning can improve appearance but may not fully restore the glass to its original condition.
We will always give you an honest assessment before treating severe hard-water staining.
Why Homeowners Choose Blue Oak
Professional Pure-Water Equipment
We use RO/DI purified water and professional water-fed pole equipment for cleaner exterior glass and safer access to high windows.
Careful, Respectful Service
We work around your landscaping, hardscape, furnishings, and property with attention to detail.
Clear Communication
You will know what is included, what we recommend, and what to expect before the work begins.
Interior and Exterior Options
Choose exterior-only maintenance cleaning or a complete interior-and-exterior service.
Local Peninsula Service
Blue Oak serves homeowners and businesses throughout Palo Alto, Los Altos, Los Altos Hills, Menlo Park, Atherton, Woodside, Portola Valley, Mountain View, and nearby communities.
A Simple Window Cleaning Process
1. Request a Free Quote
Call, text, or submit the quote form with your address, service needs, and preferred timing.
2. We Review the Property
For larger homes, specialty glass, skylights, or hard-water removal, we may recommend an on-site assessment so the quote is accurate.
3. Enjoy Clearer Windows
Our team arrives prepared, completes the agreed work, and leaves your windows, screens, and surrounding areas clean and tidy.
Frequently Asked Questions
Do you use purified water for every window?
We primarily use RO/DI pure water for exterior windows, especially higher windows and glass that can be safely reached with water-fed poles. Interior windows and detailed areas are usually cleaned by hand.
Will pure water leave spots on my windows?
The goal of RO/DI pure water is to reduce the minerals that cause water spots. When the glass is properly cleaned and rinsed, it dries clear without the mineral residue associated with ordinary tap water.
Can you remove hard-water stains from windows?
In many cases, yes. We use a specialized hard-water treatment process with Diamond Magic. The final result depends on how long the minerals have been on the glass and whether the surface has become permanently etched.
Do you clean screens, tracks, and sills?
Yes. These can be included in your quote. Let us know whether you want exterior-only service or a complete interior-and-exterior window cleaning.
How often should windows be cleaned?
Many homeowners choose window cleaning twice each year, often in spring and fall. Homes near trees, construction, sprinklers, pools, busy roads, or the coast may benefit from more frequent service.
Request Your Free Window Washing Quote
Bring more light into your home and enjoy cleaner, clearer views.
Call or text Blue Oak Window Washing at 650 643 6909
or use the form below to request a free on-site quote.