Define the windows and cleaning scope
List internal and external panes, frames, tracks, screens, glass coatings, storeys and any restricted areas. Ask whether restoration, paint removal, hard-water deposits or difficult access are included or separate.

Check method and access arrangements
A provider should explain the proposed tools, products and access method for the building. Elevated, roof, rope-access and platform work needs appropriate site-specific capability and controls. Do not lean from windows or use unsafe ladders.
Protect glass and surrounding finishes
Follow maker guidance for tinted, coated, patterned or specialty glass, as well as nearby frames, stone and timber. Avoid abrasive tools and unapproved scrapers. Scratches, etching and failed seals need separate assessment.
Compare a written quote
Share property type, pane count, photos, access restrictions, condition and timing. Compare price basis, inclusions, weather policy, exclusions and current provider terms. Regular cleaning frequency depends on the property's conditions and preference.




