Describe windows and access
List internal and external panes, frames, tracks, screens, height, coatings, parking, building rules and restricted areas. Difficult or elevated access needs a site-specific capability and safety assessment.
Ask about products and water use
Request product names or labels, how wastewater is managed and whether the method suits nearby plants, painted frames, seals and glass coatings. Do not rely on marketing claims alone; products and methods should follow manufacturer instructions.
Compare the written service scope
Confirm panes, frames, tracks, screens, water-fed tools, access fees, weather policy, exclusions and price basis. A ground-level water-fed pole may suit some properties but is not appropriate for every building or surface.
Maintain realistic expectations
Cleaning may remove ordinary soil but cannot guarantee streak-free glass, improved health, energy savings or restoration of defects. For roof, rope or high-rise access, verify current training, equipment and insurance relevant to the specific job.
