Yes. Window cleaning with the Sherpa requires the Window Payload attachment. Soft washing can use the Sherpa’s standard configuration; glass work that needs on-demand chemistry and a controlled rinse uses Window Payload.

Water is supplied and purified on the ground, then pumped through a hose to the Window Payload on the Sherpa drone. The payload carries cleaning solution in an onboard tank (about 2 quarts) and injects it into the water stream only when you want it. Typical cycle: pre-rinse, wash with chemistry and dwell, then turn injection off and finish with a thorough purified-water rinse before the cleaner dries. The rinse water stays separate from the chemistry so the final pass stays clean.

It can on the right job, but touchless cleaning is not better at removing every type of contamination. The Sherpa drone with Window Payload is a flying pressure washer: it works when the glass can be cleaned with the right chemistry, dwell time, and purified-water rinse. Etched glass, heavy buildup, and jobs that need agitation usually still need another method. A test panel is the honest way to check before you quote the full building.

Traditional window washing often puts people on lifts, swing stages, or ropes to reach elevated glass. With a Sherpa drone and Window Payload, the operator stays on the ground and the aircraft brings purified water, cleaning solution, and rinse control to the glass. You still rely on chemistry, dwell time, and a purified-water rinse — the drone changes access and delivery, not the basics of a good clean. Lifts and rope access can still be the better call for tight spaces, heavy restoration, or glass that needs brushing or scraping.