Interior vs. Exterior Window Cleaning

Exterior Cleaning: The Heavy Lifting

The outside of the glass takes the weather — rain spotting, mineral and hard-water residue, salt air, dust, pollen, and sprinkler overspray. It's the harder, more technical side: it often needs ladders or poles for upper floors, tougher residue removal, and safe handling at height. This is where most of the visible grime lives, and it's the bulk of professional window cleaning.

Interior Cleaning: The Detail Side

The inside collects a different film — dust, cooking residue, fingerprints, and pet nose-prints. The work here is about a streak-free finish and care around your furnishings: protecting sills, floors, and window treatments, and using the right products near interiors. It's less about muscle and more about detail.

Why You Need Both

Here's the frustration people hit: clean only one side and any remaining streak or haze looks like it's on the glass you just cleaned — you can't tell which side it's on. Only cleaning both sides delivers genuinely clear glass. It's also the only way to know whether a mark is dirt or an actual etch in the surface (common with long-neglected salt-air glass).

Don't Forget Screens, Tracks & Sills

A complete window cleaning includes the parts around the glass: screens (which hold dust that blows back inside), tracks (which trap grit and moisture), and sills. Skipping these means the glass re-soils faster — the dust simply migrates back on.

Getting It Done

A professional visit typically covers both sides plus screens and tracks in one appointment. How often you'll want it depends on your setting — see how often to clean windows.