Commercial parking lots and hardscape accumulate oil stains, tire marks, road salt, and organic debris that standard pressure washing handles inconsistently. Getting petroleum out of porous asphalt and concrete requires hot water and the right degreasing chemistry. Getting salt residue off before it migrates into the substrate requires timing — ideally in spring before it has a full season to bond.
We clean parking lots, entry plazas, loading areas, dumpster pads, sidewalks, and any other commercial hardscape. For large lots, surface cleaner equipment provides even coverage without the zebra striping that wand-only cleaning leaves behind.
What deferred parking lot cleaning actually costs
Oil stains on asphalt soften the binder and accelerate surface degradation. Salt residue on concrete migrates into the slab and reaches the rebar. Neither problem announces itself until the repair cost is significant.
Slip-and-fall liability is the other factor. A parking lot with biological growth on shaded sections, oil on ramps, and organic debris at the entrance is a foreseeable hazard. Regular cleaning is one of the cheapest ways to reduce that exposure.
Signs it's time to schedule
- Oil and grease stains at parking spaces and entry lanes
- Tire marks on entry and exit lanes
- White salt residue after winter
- Biological growth on shaded sections
- Organic debris and leaf staining near landscaping
- Gum and food waste near building entries
How we do it
Pre-treatment
Oil and grease spots pre-treated with degreasing solution before pressure is applied.
Surface cleaning
Rotary surface cleaner for even coverage on large flat areas. Wand work for curbs, islands, and detail areas.
Hot-water degreasing
Petroleum stains treated with hot-water pressure washing. Cold water alone does not break down oil and grease.
Rinse and drain check
Full rinse with runoff directed to vegetated areas or storm inlets per local requirements. All drains confirmed clear.
Where we work
WashLabs is based in Philadelphia and serves commercial properties across Pennsylvania, New Jersey, and Delaware. We travel for the right job — if you have a property outside our immediate area, reach out and we'll let you know if we can make it work.
Parking Lot & Hardscape Cleaning questions
Can you remove oil stains from asphalt?
Hot-water degreasing removes fresh and moderate oil staining from most asphalt surfaces. Deep, long-standing stains may lighten substantially rather than disappear entirely. We set that expectation before quoting.
How often should a commercial parking lot be cleaned?
High-traffic commercial lots benefit from biannual or quarterly cleaning. Spring cleaning removes winter salt residue before it migrates into the substrate. Fall cleaning removes organic debris before winter.
Can you clean while the lot is in use?
Yes. We work in sections so the lot stays operational. Overnight scheduling is available for lots that can't be sectioned during business hours.
Do you serve properties in NJ and DE?
Yes. We serve commercial properties across Pennsylvania, New Jersey, and Delaware.