When someone books “window cleaning” in Los Angeles, they usually picture one result: glass that looks completely clear from every angle. But most quotes only address one side of that glass. Interior and exterior window cleaning are genuinely different services — different soil, different tools, different access requirements, and different pricing. Understanding what separates them is the difference between a service that meets expectations and one that leaves a homeowner staring at streaky exterior glass, wondering why the crew that just left didn’t touch it.

01 Why “Window Cleaning” Isn’t One Job

Interior and exterior glass accumulate completely different types of soil. The interior side collects fingerprints, cooking residue drifting in from the kitchen, dust circulated by the HVAC system, pet nose prints, and the fine film that settles indoors over weeks of everyday living. None of this washes off in the rain, and none of it responds to a hose — it needs a controlled interior clean with a squeegee and lint-free cloth, done room by room, with flooring and window treatments protected from drips along the way.

Exterior glass faces an entirely different environment. It’s exposed to airborne dust, smog residue, pollen, and sprinkler overspray loaded with hard water minerals — and for coastal Los Angeles properties, salt air that leaves a persistent haze. Because exterior glass sits outdoors between cleanings, the buildup is often heavier, more mineral-based, and slower to lift than interior grime, and it frequently needs a different technique to come off completely rather than smear across the pane.

02 What Interior Window Cleaning Actually Involves

A thorough interior window cleaning is a room-by-room service performed from inside the home, not a quick pass with a spray bottle on the way out the door.

03 What Exterior Window Cleaning Actually Involves

Exterior cleaning starts with removing loose debris before it can scratch the glass during the wipe-down, and it often requires equipment interior work never touches.

04 Interior vs Exterior — Side by Side

Here’s how the two services compare directly, which is worth reviewing before requesting a quote so you know exactly what you’re asking for.

05 Why Los Angeles Properties Usually Need Both

Los Angeles’s dry climate concentrates dust, pollen, and smog residue on exterior glass continuously, since there’s little rain for much of the year to naturally rinse the surface. Meanwhile, interior surfaces build up steadily from everyday living regardless of what the weather is doing outside. A home that only ever gets exterior cleaning still looks streaky and dull when you look outward from inside; a home that only gets interior cleaning still looks hazy from the street or the backyard.

06 Why Exterior Cleaning Usually Costs More

Exterior cleaning typically carries a higher price per pane than interior cleaning, and the difference comes down to real added cost rather than a markup. Exterior work needs a rinse pass, hard water and mineral treatment, and — for anything above the ground floor — ladders, extension poles, or certified rope access, all of which take more time and equipment than a squeegee pass. It’s also weather-dependent, which can mean rescheduling around rain or wind. Interior cleaning is faster and requires no height equipment, but it adds time of its own for moving furniture and protecting flooring and window treatments along the way.

07 Skyworks Unlimited’s Interior & Exterior Standards