Commercial window cleaning has changed dramatically with the spread of low-e coatings, self-cleaning glass, and structural glazing. The techniques that worked in 1995 will scratch or etch modern windows. This guide covers interior, exterior, and high-rise programs — and how to price each.
Interior Window Cleaning
Included in most janitorial contracts on a monthly or quarterly cadence for storefront and reception glass. Use ammonia-free glass cleaner and microfiber to prevent streaking on tinted or coated glass.
Exterior Ground-Floor and Second-Story
Water-fed pole systems with purified water reach up to 60 feet without ladders. Purified water dries streak-free with no chemistry. Standard cadence: quarterly for offices, monthly for restaurants and retail.
High-Rise Window Cleaning
Buildings over 60 feet require rope access (IRATA/SPRAT certified) or bosun's chair/swing stage work. OSHA 1910.66 governs this — verify contractor certifications and current insurance before scheduling.
Coating-Safe Chemistry
- Ammonia-free solutions only on tinted or low-e glass.
- Never use razor blades on tempered glass — creates permanent scratching.
- Avoid pressure washing directly on windows; blows out old glazing seals.
Window Programs Coordinated in One Contract
We bundle interior, ground-floor exterior, and rope-access scheduling for property managers.