Power Washing in Riverdale, Bronx

Riverdale has more paving and stone outdoors than almost any other part of the Bronx. Fieldston houses come with long driveways, flagstone paths, stone steps and slate or brick terraces, while many of the apartment towers have broad front plazas, ramps and garage entrances in use all day.

Heavy tree cover keeps those surfaces damp, which is exactly where moss, algae and black streaking take hold. North-facing walls and steps that never see sun turn green first.

We work for homeowners, co-op boards and building managers. Pressure is set separately for each surface, because old stone and soft mortar can be gouged by a machine turned up too high.

At houses, the usual list is the driveway, the front path and steps, the back terrace and the apron in front of the garage. Vinyl or painted siding, wood decks and fences can be added where a property has them.

Flagstone and slate get a soft setting and a fan tip so the joints are not blown out. Poured concrete tolerates more force, and pavers need a careful hand to keep the joint sand where it belongs. A trial patch always comes first.

For apartment buildings we wash entry plazas, sidewalks, accessible ramps, garage ramps and the trash room exterior. These jobs run at quiet hours, early morning or midday, with cones out and a clear path kept for residents.

Many Riverdale driveways are steep. Wet moss on a slope is slick underfoot, so clearing it before winter is about safety as much as looks.

Before the wand comes out, we tape over exterior outlets and lamps, tarp the flower beds and move or cover nearby cars. Water is steered toward drains, and the whole area gets a last rinse so no grit is left behind.

Fallen leaves leave brown tannin stains when they sit wet on concrete and stone for weeks. A late-fall wash after the trees drop clears those marks before the first snow.

Stone walls and garden steps in Fieldston often have lichen and dark crust built up over many seasons. We clean them gently in stages so the stone's natural color comes back without damage.

If the car in the driveway is due too, it can be detailed the same day; see auto detailing in Riverdale.

Get the terrace or driveway on the calendar in Riverdale, 10471, by calling 1-800-589-4364 or asking for a free quote; 10% off your first cleaning counts here too. Indoor services are listed on the Riverdale services page.