Exterior Glass — Squeegee Technique: the full procedure

Clean exterior glass to a professional streak-free finish using the standard scrub-and-squeegee method.

• Applies to: Cleaners, crew leads
• Frequency: Every exterior job / per-visit
• Scope: Covers the manual scrub-and-squeegee sequence and edge detailing for ground- and ladder-reachable exterior glass. Ladder positioning and any work at height defer to OSHA fall-protection standards, ANSI/IWCA I-14.1, and the business safety plan; high-rise/suspended access is out of scope.

What you need

• Squeegee (channel + quality rubber)
• T-bar scrubber/applicator
• Bucket with cleaning solution
• Scrim/huck towels
• Microfiber detailing cloths
• Extension pole (for safe ground reach)

The procedure, step by step

1. Assess the glass and surroundings — Note tempered/coated panes, screens to remove, and obstructions. Confirm footing and ladder needs per the ladder SOP before starting.
2. Remove screens and dry debris — Take out screens and set them aside for the screens/tracks SOP. Brush off cobwebs, dirt, and loose debris so it isn't dragged across the glass.
3. Wet and scrub the pane — Load the scrubber, apply solution across the entire pane, and agitate to break down dirt, bug residue, and film, working the edges and corners.
4. Choose a squeegee pattern — Use a straight-pull for small/divided panes and the fan (one-handed S/snake) technique for larger glass to clear water continuously without lifting the blade.
5. Squeegee with overlap — Lead with the blade slightly angled so water runs off to the unfinished side; overlap each stroke into the dry, cleaned area to avoid leaving lines.
6. Wipe the blade each pass — Dry the rubber on a scrim/huck towel between strokes to prevent redepositing dirty water and creating streaks.
7. Detail edges, corners, and frame — Run a dry microfiber around the perimeter and corners to remove the residual water line; wipe the exterior frame so it doesn't drip onto cleaned glass.
8. Inspect from outside and inside — Check the pane at an angle and from indoors against the light; re-detail any streaks, marks, or missed corners before reinstalling screens.

Quality check before you finish

• Streak-free, haze-free glass viewed at an angle and against light from both sides
• No squeegee lines, detailing marks, or fingerprints
• Bug residue, sap, and film fully removed
• Edges and corners detailed — no residual water line at the frame
• Exterior frame wiped — no drips running back onto clean glass
• Screens set aside undamaged, ready for reinstallation

This is a free, source-anchored standard operating procedure (SOP) you can print and hand to staff. It documents the work sequence for a Window Cleaning business — not safety or regulatory rulings, which defer to the cited authorities, the applicable code, and your own health-and-safety plan. Open the tool above to print it, toggle ink-saver, or (with a free ToolFluency Business account) edit it to match your own workflow.

Sources

• International Window Cleaning Association (IWCA) (iwca.org)
• Window Cleaning Resource (windowcleaner.com)
• Occupational Safety and Health Administration (ladders/fall protection) (osha.gov)