House washing in Harahan, Louisiana lifts green algae, pollen and organic streaks from vinyl, wood and painted siding on small older homes that sit under mature trees. A gentle rinse matched to each surface clears the growth without forcing water behind the walls, so the exterior reads clean through the humid season.
Harahan is a small residential area with older homes, and the tree cover and the river adjacent humidity are what put the most growth on the siding. The mature trees drop pollen and debris onto the roof and the walls, and the damp air keeps algae and mildew active on the shaded sides through the year. House washing covers vinyl, wood and painted siding, the trim, the window frames, the soffits and the fascia boards reachable from the ground. The dark streaks that run under the roof edges from gutter overflow lift with the rinse, and the exterior gutter faces are wiped as part of the work. Painted trim on older homes is treated with the most care, because the finish there is thinner and has weathered longer. The work does not include roof cleaning, deck restoration, or repairs to damaged siding, and it does not seal the surface. What any single home needs depends on how heavy the canopy sits over it and how long the growth has been left, and a walk-through settles the scope before any price is set.

The job starts with a walk around the home to read what is growing on each wall and where the worst streaks sit. The siding material and any fragile trim under the tree cover are noted, then a straightforward price is given before anything gets wet.
Delicate areas are masked or routed away from, and a gentle rinse is applied to the siding, trim and soffits. The crew works from the top down so sediment moves off the walls rather than back onto clean sections below.

Every wall gets a final rinse and a walk-through. Anything missed is handled before the crew leaves, and the work area is left clear of debris and equipment.
The trees here drop pollen, leaves and debris onto the siding through the year, and the shade they cast keeps the sheltered sides damp enough for algae to hold. A wash lifts that growth, and homes under heavy canopy need the work sooner than an open lot would. The walk-through shows whether the siding is at that point.
Yes, when the rinse is set for the material. Older painted trim is washed with a lighter approach so the finish is not cut or lifted. The walk-through is where the right setting for each wall gets settled, and trim that has weathered longer gets the softer rinse.
Most homes here benefit from house washing once a year, and shaded sides under the mature trees may need it sooner because the canopy holds moisture against the siding. A walk-through shows whether the growth is at that point or whether it can wait. There is no fixed schedule.
Read the full house washing page for the method and the deliverables, or the Harahan area page for how the seasons and the property type shape the work there. The same house washing service is available in River Ridge, Kenner and Metairie, and each carries its own detail.