Exterior Care Guide · Updated September 2026

Pressure vs Power vs Soft Washing

Three terms used interchangeably in marketing and not at all interchangeably on a building. The wrong one etches concrete, drives water into a facade, or strips paint, and the damage is not reversible.

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Summary

Pressure washing uses unheated water at roughly 1,300 to 3,100 PSI to clean hard surfaces such as concrete, brick, and pavers. Power washing is the same equipment with heated water, which cuts grease, oil, and gum faster. Soft washing runs at 150 to 300 PSI and relies on a cleaning solution rather than force, for stucco, wood, painted siding, and organic growth such as mold and algae. Anvil's scope is cold-water pressure washing of hard surfaces.

Pressure washing: cold water, hard surfaces

Standard commercial pressure washing is unheated water delivered somewhere between roughly 1,300 and 3,100 PSI. Two numbers matter: PSI, which is the force, and GPM, the flow rate, which is what actually carries loosened soil away. High PSI with low flow cleans a narrow stripe slowly; balanced flow is what makes a sidewalk finish in a night.

On flatwork, a surface cleaner attachment does the real work. It encloses two spinning jets under a housing so the pressure lands evenly and the operator is not painting stripes across the concrete with a wand. Gum comes off with a concentrated rotary nozzle plus a pre-treatment to soften it first. This is the bulk of what commercial exterior cleaning actually is, and it is detailed on our pressure washing page.

Power washing: what heat adds

Power washing, strictly used, means the same pressure equipment fitted with a heating element, so the water arrives hot. Heat acts as a solvent: it breaks down grease, oil, and fats far faster than cold water at the same pressure, and it softens gum on contact.

That makes heated units the tool of choice for loading docks, dumpster pads, drive-through lanes, fuel islands, and restaurant back-of-house exteriors where the soil is fundamentally greasy. Contractors who specialize in exterior restoration typically run heated rigs for exactly this reason. For ordinary sidewalk and entrance cleaning, heat is not necessary and mostly adds cost.

Soft washing: chemistry instead of force

Soft washing inverts the approach. Pressure drops to roughly 150 to 300 PSI, barely more than a garden hose, and a cleaning solution does the work. The solution is applied, allowed to dwell so it can kill and release organic growth, then rinsed.

It exists because some surfaces cannot take force. Stucco and EIFS crack and let water in behind them. Wood furs up. Painted metal and siding lose their coating. Roofs lose granules. And for mold, algae, and lichen, pressure only removes what is visible while leaving the organism to regrow, whereas the right solution treats it. Exterior specialists run soft wash systems for facades, roofs, and painted surfaces.

Matching the method to the surface

A rough guide to what belongs where:

Concrete sidewalks, entrances, stairs, loading areas: cold-water pressure with a surface cleaner. Heat only where grease is the problem.
Brick and masonry: pressure, at reduced PSI and a wider fan angle. Aggressive settings blow out mortar joints, which is expensive to repair.
Pavers: pressure with care. Too much force strips the sand from the joints and destabilizes the surface.
Stucco, EIFS, wood, painted siding, roofs: soft wash. Pressure damages all of these.
Organic growth, mold, algae: soft wash, because the growth has to be treated rather than blasted.
Fabric awnings and signage: neither. These are hand washed at low pressure with a fabric-safe solution; see awning and signage cleaning.
Glass: never pressure washed; see interior vs exterior window cleaning.

Runoff, drains, and scheduling

Exterior washing produces wastewater, and in most of the metro area it cannot simply run into a storm drain, particularly when it carries detergent, oil, or grease. Practically that means containment at the drains, directing or recovering the water, and planning where it goes before the job starts rather than after somebody complains.

Timing matters too. Work runs before opening, overnight, or on weekends so wet walkways never meet foot traffic, and the metro freeze window closes the season for flatwork, since water on a sidewalk below freezing is a liability rather than a cleaning. Property managers coordinating this across a portfolio will find the wider context on our property management and CRE page.

What Anvil does outside, and what we refer out

Anvil performs cold-water pressure washing of hard surfaces: sidewalks, entrances, exterior stairs and landings, loading areas, dumpster pads, and gum removal on storefront frontage. That work runs on a written schedule, coordinated with your hours, alongside the nightly cleaning program where there is one.

Anvil does not perform heated power washing, and does not perform soft washing of facades, roofs, or painted surfaces. Where a building needs those, we will say so, point you to a specialist who does that work properly, and coordinate the scheduling so it lands outside your operating hours. Saying it plainly is cheaper for everyone than discovering the limitation halfway through a job. Storefront operators can see how the exterior pieces fit together on our retail and storefronts page, or send us the site details.

Frequently asked questions

Is pressure washing the same as power washing?

No. Power washing uses heated water, pressure washing uses unheated water at the same kind of pressure. Heat matters for grease, oil, and gum; for ordinary sidewalk and entrance cleaning it is not needed.

What is soft washing used for?

Surfaces that cannot take force: stucco and EIFS, wood, painted siding, and roofs, plus organic growth such as mold and algae, which has to be treated with a solution rather than blasted off. It runs at roughly 150 to 300 PSI.

Does Anvil do power washing or soft washing?

No. Anvil's exterior scope is cold-water pressure washing of hard surfaces such as concrete, brick, entrances, and loading areas. Heated power washing and soft washing are referred to specialists, and we coordinate the scheduling.

Can pressure washing damage brick or pavers?

Yes, at the wrong pressure or nozzle angle. Excess force blows out mortar joints in brick and strips the stabilizing sand from paver joints. Both are cleaned at reduced PSI with a wider fan, which is why the settings are matched to the material.

How often should sidewalks and entrances be pressure washed?

Busy storefront frontage usually needs attention monthly or quarterly to stay presentable; less-trafficked areas run seasonally or annually. The interval comes from how quickly the surface actually soils, which we assess on site.

What happens to the water and detergent afterward?

It is contained and directed rather than allowed into a storm drain, which is what local wastewater rules across the metro area generally require. Runoff handling is planned into the job before work starts.

Coverage area

Anvil pressure washes hard surfaces across Manhattan and the boroughs, Westchester, Long Island, and New Jersey. Exterior work is scheduled before opening or on weekends and coordinated with the nightly program where one exists.

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Cold-water pressure washing on a written schedule, timed around your hours.

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