Window Cleaning Guide: Services, Methods & DIY Tips

What Is Window Cleaning?

Window cleaning, also known as window washing, is the exterior and interior cleaning of architectural glass used for structural, lighting, or decorative purposes. According to Wikipedia's article on window cleaners, this essential service can be performed manually using various tools or increasingly through automation and technology. Commercial window cleaning work ranges from informal cash transactions to formal tender processes, with regulations, licensing, techniques, equipment, and compensation varying significantly by country and region.

The practice has evolved considerably since its origins in the late 19th century in New York City, when the trade developed alongside early skyscrapers. What began as workers standing precariously on window ledges has transformed into a sophisticated profession with specialized equipment, safety protocols, and professional standards.

Why Professional Window Cleaning Matters

While many homeowners attempt DIY window cleaning, professional window washing services offer distinct advantages. According to Bubbles Window Cleaning, in 2020 alone, there were 22,710 ladder injuries, underscoring the safety risks associated with DIY window cleaning. Professional window cleaners are trained, licensed, bonded, and insured, ensuring both quality results and safety compliance.

Clean windows significantly impact your home's appearance. Professional services help maintain curb appeal and can contribute to the longevity of your windows and exterior surfaces. For those seeking reliable service, a professional window washing service provides peace of mind and superior results.

How to Clean Windows: Professional Methods

Traditional Window Cleaning Techniques

According to Wikipedia's comprehensive guide on window cleaning, professional window cleaners employ several proven methods:

Chamois and Scrim Method This traditional approach uses chamois leather to loosen and remove dirt, followed by buffing with scrim or cheesecloth. While time-tested, this method requires skill and practice to avoid streaking.

Water and Squeegee Method The most common professional technique involves applying water mixed with specialized cleaning chemicals. According to the research, cleaners add dish soap, glass cleaner, trisodium phosphate, or etching salt to water. In sub-freezing temperatures, anti-freezing chemicals are incorporated to prevent ice formation.

Water-Fed Pole Systems Water-fed poles represent a significant advancement in window cleaning technology. These telescopic poles feature brushes and water jets fed from vehicle-borne tanks of deionized water. The water undergoes a 2-3 stage filtration process using carbon filters, de-ionization filters, or reverse osmosis membranes. Critically, filtered water must contain 0 ppm TDS (total dissolved solids) to prevent spotting on glass surfaces. These systems can reach up to 70 feet, making them ideal for multi-story buildings up to six storeys high. According to Wikipedia, water-fed pole systems are common in the UK and increasingly popular in the US.

Water-Fed Squeegee Flipper A more recent innovation, the water-fed squeegee flipper was invented by John Kimmel in 2012. This tool combines purified water washing with a microfiber pad and squeegee in one integrated system.

Access Methods for High-Rise Cleaning

Professional window cleaners access windows using various methods depending on building height and architecture:

• Ladders - Suitable for single and two-story residential properties

• Supported scaffolding - Temporary platforms resting on surfaces below

• Aerial work platforms - Scissor lifts and cherry pickers for mid-rise buildings

• Suspended access equipment - Platforms suspended by wire rope from above

• Building maintenance units (BMUs) - Permanent or semi-permanent systems on commercial buildings

• Bosun's chair - Single-person seat for controlled rope descent on high-rise buildings

• Rope access - Abseiling equipment with safety harnesses for complex architectural features

How to Clean Windows: DIY Methods

For homeowners interested in cleaning their own windows, several effective approaches exist.

Homemade Window Cleaning Solution

According to She Wears Many Hats, a highly effective homemade window cleaner can be created with simple ingredients:

Recipe:

• 2 cups water

• 1/4 cup white vinegar

• 1/2 teaspoon dish detergent

The key discovery from professional glass installers and commercial window cleaners is adding dish detergent to the vinegar and water mixture. This combination eliminates the filmy residue and chalky streaks that other cleaners often leave behind.

Application Method:

1. Combine all ingredients in a bucket

2. Apply with a soft bristle scrub brush (use an extension pole to avoid ladders)

3. Rinse thoroughly with clean water before the solution dries

4. Avoid cleaning windows in direct sunlight to prevent quick drying

According to the research, this approach works better than vinegar and water alone or many store-bought products. For interior windows in hard water areas, hand drying is recommended instead of air drying to prevent mineral spots.

Essential Tools for DIY Window Cleaning

To achieve professional-looking results at home, you'll need:

• Soft bristle scrub brush

• Extension pole (6-12 feet) for reaching high windows safely

• Hose with sprayer attachment

• Bucket

• Microfiber cloths or squeegee

• Newspaper or coffee filters (alternative to paper towels)

Starting a Window Cleaning Business

For entrepreneurs interested in launching a window washing service, the startup process is more accessible than many realize.

Initial Investment and Startup Costs

According to a Reddit discussion on starting a window cleaning company, you can begin with just a few hundred dollars in equipment. The basic equipment needed includes:

• Ladder

• Squeegees

• Sponges

• Soap

• Microfiber cloths

• Bucket

Starter kits are available through suppliers like WindowCleaner.com, which positions itself as the "#1 Resource for Window Cleaners" and "#1 Rated Window Cleaning Supplier." Founded in 2007 by window cleaners, the company offers professional-grade supplies for residential, commercial, high-rise, and solar panel cleaning.

Business Structure and Legal Requirements

According to the Reddit discussion on starting a window cleaning company, an LLC is not required to begin operations. You can start as a sole proprietor with revenue filed through your normal tax return. However, insurance is 100% necessary—it protects against damage costs and is legally required in some states. Minimum insurance is available through providers like Hiscox.com for approximately $40 per month.

Lead Generation Strategies

Successful window cleaning businesses employ multiple lead generation methods:

Door Knocking Traditional door-to-door solicitation remains effective, especially for residential markets.

Google Local Service Ads (LSA) According to the research, obtaining "Google Guaranteed" status through LSA should be a priority. This provides visibility to local customers actively searching for window cleaning services.

Thumbtack One business owner reported a 90%+ win rate on leads generated through Thumbtack, making it a valuable platform for new businesses.

Facebook Ads Facebook advertising operates on a pay-per-impression model rather than pay-per-lead. Results vary based on content quality. According to the research, one entrepreneur spent less than $150 on Facebook ads and closed several thousand dollars worth of cleaning jobs.

Google Ads (PPC) Pay-per-click advertising requires a landing page or website. Research indicates maximum CPC bids around $25 for window cleaning keywords.

Cold Outreach Contacting real estate agents, property managers, and facilities managers directly can generate commercial contracts.

Local Facebook Groups Posting in community groups builds local awareness and generates leads.

Financial Setup for Your Business

According to the startup guide, begin with simple payment methods:

• Initial stage: Venmo, Zelle, or cash

• Growth stage: Stripe account for credit card processing

• Banking: Open a separate business bank account (typically free) to help access 0% interest credit card offers. Chase is recommended for banking.

• Accounting: Puzzle.io offers free accounting software up to $5,000 in monthly expenses

Equipment and Transportation

A pickup truck is ideal but not required to start. For one-story houses with small step ladders, a car suffices. As your business grows, consider upgrading to a water-fed pole system (such as the Xero residential kit) for increased efficiency and safety.

Online Presence

While not essential for door-to-door operations, a professional online presence is recommended. Simple one-page websites can be created through platforms like Carrd.co, with domains available through GoDaddy. Professional business email is recommended over free Gmail accounts.

Window Cleaning Business Success Stories

Vossome Window Cleaning

Vossome Window Cleaning exemplifies the family-owned model. Based in St. Charles, the company combines window cleaning with pressure washing and concrete patio cleaning services. The owner, who started the business to have freedom to help people on his own terms, learned the trade from his father who owned a window cleaning company. With over a decade of experience, the owner prioritizes people over profit, donating a percentage of gross earnings to charity. The company maintains 5-star reviews and benefits from consistent client rehiring.

Bubbles Window Cleaning

Bubbles Window Washing & Gutter Cleaning represents the multi-service model across multiple locations. Chicagoland's premier choice for residential and commercial window cleaning, the team is professionally trained, licensed, bonded, and insured. The company offers window washing (inside and outside), gutter cleaning, and power washing services across six Chicagoland locations. They've earned the Angi Super Service Award 2025, Nextdoor Neighborhood Favorite, Best of Home Advisor 2020, and maintain a BBB® Accredited Business with A+ Rating.

Duchesney Window Washing

Duchesney Window Washing demonstrates the value of specialization and longevity. With over 25 years of experience serving Cape Cod and Plymouth, MA, this family-owned business offers window cleaning, gutter cleaning, soft washing, power washing, roof cleaning, solar panel cleaning, wood restoration, and holiday light installation. Their commitment to quick response times, free quotes within 1-2 business days, and satisfaction guarantees has built a strong reputation across 16+ communities.

Professional Window Cleaning Supplies and Equipment

Featured Brands and Products

According to WindowCleaner.com, leading brands in the industry include Moerman, Unger, Ettore, Sörbo, Maykker, and XERO. Recent innovations include:

• XERO Lite Brush - Described as the newest innovation with four rows of bristles, available in Nylon or Hybrid options with swivel head

• XERO Fast Lock Brush Mount - Priced at $15.00 CAD

• Sörbo Special Edition Red Quicksilver Channel - Starting at $18.00 CAD

• Sörbo Germany Squeegee Handle - $50.00 CAD

• Sörbo MAGA Squeegee Handle - $50.00 CAD

Product Categories Available

Professional suppliers offer comprehensive product ranges:

Traditional Tools Squeegees, scrubbers, scrapers, buckets, belts/holsters, extension poles, towels, and ladders

Water-Fed Equipment Water-fed poles, pure water systems, water-fed brushes, pure water kits, and replacement filters

Specialty Items Starter kits, specialty squeegees, soaps, chemicals, and high-rise equipment

Customer Benefits and Policies

According to WindowCleaner.com, professional suppliers offer:

• Free shipping on orders over $49

• 2-day shipping to select states

• 90-day return policy on unused items in original packaging

• 24/7 customer service

• Free gifts with purchases of $100 or more

• Low price guarantees

• Online forums for window cleaners to connect and share advice

Safety Considerations in Window Cleaning

Historical Context and Hazards

Window cleaning carries significant risks. According to Wikipedia's article on window cleaners, in 1932 in New York, 1 in every 200 window cleaners were killed per year. The trade developed in New York City in the late 19th century with early skyscrapers, evolving from workers standing on window ledges to using leather safety belts with anchor bolts to modern scaffolds.

On May 29, 1962, four window cleaners were killed when a scaffold fell at the Equitable Life Building. In 1993, Local 32BJ (the New York window cleaners' union) launched an apprentice training program, significantly improving safety standards. Window cleaning is considered the most dangerous job in the UK, with several window cleaners dying each year and many more injured.

California Safety Regulations

According to California Code of Regulations §3282, comprehensive safety requirements govern all window cleaning operations:

Employer Responsibilities

• Provide safety equipment and devices conforming to regulations

• Maintain equipment in safe condition at all times

• Instruct employees in proper equipment use

• Supervise equipment use to ensure safe working practices

• Only assign properly trained employees to work from scaffolds or boatswain's chairs

Employee Requirements

• Use required safety devices and equipment

• Cannot pass between window sills on building exterior unless one belt terminal is connected at all times

• Cannot work from sills with obstructions or slippery substances

Window Safety Anchors Safety anchors or Division-approved anchorages are required when:

• A person stands on a sill to clean windows

• Window opening size creates a fall-through hazard

• Windows with clear opening exceeding 18 inches (lesser dimension) when fully opened are considered fall hazards

Building Owner Requirements

• Provide written assurance before use that all safety devices meet regulations

• Ensure all safety devices are inspected at least every 12 months

• Address window anchors, fittings, load sustaining capabilities, stability factors, and design criteria for electrical wiring

UK Regulations and Best Practices

According to Wikipedia's research, the UK's Working at Height Regulations (2005) do not ban ladders but restrict their use to safe methods. The Health and Safety Executive (HSE) clarifies that ladders are acceptable for "low risk and short duration" work like window cleaning. While HSE favors scaffold towers, it acknowledges that ladders are often the "only realistic option" for domestic and small commercial buildings.

Water-fed pole systems are considered safer than ladders, though HSE notes that water spillage creates slip hazards. In spring 2006, the UK's Defra considered banning non-essential water use, potentially affecting water-fed poles reaching up to 60 feet. Window cleaners argued their water usage is minimal compared to large industry and energy companies.

Tax Implications for Window Cleaning Services

According to Washington State Department of Revenue, window cleaning has specific tax classifications:

Exterior Window Washing

• Classified as a janitorial service

• Both interior and exterior window washing fall under this category

• No retail sales tax is collected on window washing charges

• Contractors pay B&O tax under "Service and Other Activities" classification

• Exception: Does not apply to special clean-up jobs (e.g., post-construction cleaning)

Exterior Wall Cleaning

• Not classified as a janitorial service

• Retail sales tax must be collected on these charges

• Contractors pay B&O tax under "Retailing" classification

Getting Started with Window Cleaning

For Homeowners: DIY Window Cleaning

If you prefer to clean your own windows, start with the homemade solution recipe mentioned earlier. Invest in basic tools including an extension pole, soft brush, and microfiber cloths. Practice on a small section first to develop technique and avoid streaking. Remember to avoid cleaning in direct sunlight and rinse thoroughly before the solution dries.

For Business Owners: Launching a Window Washing Service

Begin by:

1. Research your market - Understand local demand, competition, and pricing

2. Invest in basic equipment - Start with essentials: ladder, squeegees, brushes, soap, and cloths

3. Secure insurance - Protect your business with liability coverage

4. Choose your business structure - Sole proprietor or LLC

5. Set up banking - Open a business account and establish payment processing

6. Generate leads - Use door knocking, Google Local Service Ads, Thumbtack, and Facebook ads

7. Build your online presence - Create a simple website and professional email

8. Deliver quality service - Build reputation through excellent results and customer service

9. Reinvest profits - Upgrade to water-fed systems and expand service offerings

Conclusion

Window cleaning, whether as a DIY project or professional service, requires understanding proper techniques, safety considerations, and available tools. For homeowners, a simple homemade solution and basic equipment can produce excellent results. For entrepreneurs, the window cleaning business offers low startup costs, multiple lead generation channels, and strong profit potential.

Professional window washing services provide safety, expertise, and superior results that justify their cost. Whether you choose to clean your own windows or hire a professional, understanding the methods, equipment, and best practices ensures clean, streak-free glass that enhances your home's appearance and longevity.

For those starting a window cleaning business, success comes from combining quality service delivery with effective marketing and continuous investment in better equipment and training. The industry's growth, driven by increasing demand for professional services and technological innovations like water-fed poles, creates excellent opportunities for new entrants willing to prioritize customer satisfaction and safety.