Farnsworth Park Amphitheater Pressure Washing, Altadena Case Study

Case Study: Farnsworth Park Amphitheater Hardscape Pressure Washing in Altadena

Property: Farnsworth Park Amphitheater
Location: Altadena, CA (Los Angeles County)
Completed: October 2026
Services: Commercial hardscape pressure washing with hot water

Concrete floor and tiered seating of an outdoor amphitheater, with two tall stone towers at the top under a cloudy sky — The amphitheater from the lower floor, looking up the seating tiers.

The project

The amphitheater at Farnsworth Park in Altadena has curved rows of concrete seating tiers edged in fieldstone, stepping down to a concrete floor below two tall stone towers. That adds up to a lot of flat concrete, plus steps and tier edges that a wash has to reach one row at a time. We were hired to pressure wash the concrete and hardscape.

Curved concrete seating tiers with fieldstone edges, a hose running across them and a worker standing near the top — Curved concrete tiers edged in fieldstone.

What we did

Hot-water pressure washed the concrete seating tiers, steps and lower floor
Washed around the fieldstone bands and the metal fittings set into the tiers

Wide view of curved amphitheater tiers, wet in the foreground and dry farther back, with a worker and a red bucket in the distance — Washing in progress, with wet tiers in the foreground.

Concrete tiers with fieldstone bands, partly wet and partly dry during pressure washing — Wet and dry concrete mid-wash.

The result

The job was completed on October 30, 2026. The photos show the concrete mid-wash, with wet and dry sections meeting along the fieldstone bands. Older marks, like the rust-colored stain on one lower tier, can remain after washing because of the age and porosity of the surface.

Close view of wet concrete tiers edged in fieldstone, with a rust-colored stain on a lower tier — Fieldstone edging on the tiers, up close.

Need hardscape cleaned at your property?

We clean concrete and hardscape at parks, event venues and commercial properties across Southern California, and we can schedule overnight or on weekends. Learn more about our commercial concrete and hardscape cleaning or request a free estimate. Call (909) 323-6122.

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