Window Cleaning: Compare Panes, Screens, Tracks, and Access Charges

A window quote can be priced by pane, opening, project, or time. The unit matters less than the included surfaces. “Exterior windows” may omit screens, tracks, sills, frames, storm panels, skylights, or interior glass. Count windows by type and ask the provider to return a scope that says which side and which component is included.

Count the parts that create labor

Prepare an inventory with fixed panes, operable sashes, French or divided-light windows, sliding doors, skylights, screens, and storm windows. Note interior-only, exterior-only, or both sides. Add ladder or lift access, roof access, fragile landscaping, and windows blocked by furniture. A three-story exterior and a ground-floor pane are not equivalent access tasks.

Manufacturer care instructions help define what “clean” should protect. Andersen recommends mild detergent and soft cloths or brushes for many screens and advises thorough rinsing; its guidance also warns against harsh chemicals and abrasives on hardware (Andersen product care). Andersen’s retractable-screen guidance says tracks should be vacuumed or wiped, with oil-based cleaners avoided because they attract debris (Andersen retractable-screen care). These are product instructions, so the installed manufacturer’s guide should control.

Separate cleaning from repair

Ask whether the crew will remove screens or simply brush them in place. Bent frames, failed seals, damaged tracks, hard-water etching, paint overspray, and broken latches may need repair or replacement. A cleaner should identify those conditions rather than promise that a stronger chemical will solve them. Confirm whether sticker or construction-adhesive removal is included and what test method protects the glass coating.

Use a scope table in every quote:

Component	Included?
Interior glass	Count openings and panes
Exterior glass	Note ladder, lift, or water-fed access
Screens	Remove, wash, dry, and reinstall?
Tracks and sills	Vacuum only or wet detail?
Frames and hardware	Wipe only; no abrasive restoration
Skylights or storms	Separate access and handling line

EPA advises using label directions, ventilating during cleaning, and never mixing products (EPA indoor-air guidance). Ask what solution is used on coated glass and how wastewater is controlled near landscaping. Do not accept unsafe ladder work as a hidden labor discount.

Send photos and the inventory before the visit. Compare total panes, components, access method, protection, and re-clean policy. The next action is to ask for a per-component checklist so a lower quote cannot win by silently omitting screens and tracks.

Schedule around weather and building use. Rain, wind, direct sun, and cold can affect access, drying, and the visibility of marks, while an occupied office or nursery can limit which windows are reachable. Ask how the team handles interior floors, furniture, security sensors, and alarm contacts. If a pane has a failed insulating seal or permanent mineral etching, record it before cleaning and ask for a separate repair or restoration recommendation. A window cleaner should be able to say when a defect is outside cleaning rather than escalating the chemistry.