When you book a window cleaning service, crystal-clear glass is the obvious expectation—but what about the frames and sills that hold those panes? It's a surprisingly common source of confusion between customers and cleaners, and the answer directly affects your final bill and satisfaction.
What's Actually Included in Standard Window Cleaning
Most basic window cleaning services focus exclusively on the glass itself. A technician will clean both the interior and exterior pane surfaces, squeegee or dry-buff the glass, and leave you with streak-free windows. However, frames (the wooden or vinyl trim surrounding the glass) and sills (the horizontal surface at the bottom of the window) are typically not included in standard pricing unless you specifically request them or opt for an upgraded package.
This distinction matters because frames and sills trap dirt, pollen, bird droppings, and algae differently than glass. They require separate tools and often more labor-intensive scrubbing.
Breaking Down the Service Options
Glass-Only Service This is your baseline option, usually priced between $8–$15 per window for residential properties. You get clean glass, minimal time on-site, and predictable costs. It's the standard offering from most local providers.
Frame & Sill Add-Ons When you request frame and sill cleaning, expect to pay an additional $3–$8 per window, or sometimes a flat $50–$150 upcharge depending on your home's size and condition. The cleaner will use brushes, sometimes mild detergent solutions, and rinse the frames and sills thoroughly. This adds 15–30% to your total job time.
Full-Service Packages Some companies offer premium bundles that include glass, frames, sills, and sometimes tracks or screens. These typically run 20–40% higher than glass-only but provide better overall value if you want everything cleaned at once.
Why Frames and Sills Need Special Attention
Frames and sills collect debris that glass alone doesn't. Aluminum and vinyl frames develop oxidation and chalky buildup; wooden frames can hold moisture and mildew. Sills are especially problematic because they're horizontal surfaces where water pools, leaves accumulate, and algae grows in shaded areas.
If you skip frame and sill cleaning but clean the glass, you'll notice the contrast—clean glass against dirty trim looks unfinished. Plus, neglected sills can lead to drainage problems and wood rot over time.
Questions to Ask Before Hiring
Before booking, clarify exactly what you're paying for:
- Does your quote include frames and sills, or just glass? Get it in writing.
- What cleaning method do you use for frames? Pressure washing can damage some materials; hand-scrubbing is safer.
- Are window tracks included? They're often overlooked but collect heavy grime.
- What's the upcharge for frames and sills if I add them later? It's cheaper to bundle from the start.
- Do you treat or seal frames after cleaning? Some premium services apply protective coatings.
How to Get the Best Deal
If frame and sill cleaning is important to you, ask for a bundled quote that includes everything upfront rather than adding it piecemeal. Most providers discount package deals by 10–15% compared to separate service calls.
For a typical 15-window home with frames and sills added, expect total costs between $250–$500 depending on condition and your region. If frames are heavily soiled or haven't been cleaned in years, budget toward the higher end—it's more labor.
Seasonal timing also matters. Spring and fall are peak seasons with higher prices; winter offers lower rates and less algae growth to contend with.
Should You Get Frames and Sills Cleaned?
Yes, if:
- Your frames are visibly dirty or stained
- You have wooden frames prone to mildew
- You're preparing your home for sale or a special event
- It's been more than a year since your last professional cleaning
Maybe not, if:
- Your frames are relatively clean and you're on a tight budget
- You're comfortable doing sills yourself with a brush and hose
Using a service like Mercoly, you can compare window cleaning providers in your area side by side, read verified reviews about what they actually include, and get transparent quotes that spell out frame and sill pricing before you commit.
Frequently Asked Questions
Q: Can I clean my own frames and sills after hiring a professional for the glass? Yes—most pros recommend waiting 24 hours so your glass doesn't get splashed, then use a soft brush, warm water, and mild detergent on frames and sills.
Q: Do aluminum frames need different cleaning than vinyl? Aluminum oxidizes and needs a slightly stronger degreaser, while vinyl is gentler and just needs detergent and a soft brush to avoid scratching.
Q: What's the best time of year to clean frames and sills? Late spring or early fall works best, after pollen season and before leaves accumulate, though any time works if conditions are dry enough.
Ready to find a window cleaner who includes what you need? Compare trusted local providers on Mercoly today.