Jet Washing vs Power Washing: Is There a Difference?

What each term usually means

Jet washing is the everyday British name, taken from the jet of water the machine produces. Pressure washing is the more technical name for exactly the same thing. Power washing is common in American usage and sometimes refers specifically to machines that heat the water.

So if one company offers jet washing and another offers pressure washing, they are almost certainly describing the same service. Ask what equipment they use and how they adjust it for your surface rather than worrying about the label.

Where hot water helps

Heated water loosens grease, oil, chewing gum and some organic stains faster than cold. It is useful on garage floors, commercial forecourts and drives with oil spots. Hot steam is also used at low pressure on delicate surfaces such as some roofs and render, where it cleans without the force of a jet.

When a jet is the wrong tool

High pressure is good on hard, durable surfaces like block paving, concrete and many flags. It is the wrong choice on roofs, render, painted surfaces, soft stone and older timber, where it can strip coatings, erode the surface, force water behind tiles or leave marks.

That is where soft washing comes in. It uses low pressure with cleaning solutions that kill algae, mould and lichen at the root, so the surface is cleaned by the chemistry rather than by force. We never high pressure wash roofs; they are scraped, soft washed, low pressure washed or steam cleaned depending on the tile.

What a good jet wash includes

On block paving, a jet wash lifts sand from the joints, so re-sanding afterwards is usually part of doing it properly. A treatment slows the return of moss and algae, and re-sealing helps protect the surface. Stubborn stains may need specific attention rather than simply more pressure.

A careful operator will also protect nearby windows, doors and plants from spray, and will clear up the dirt that comes off rather than leave it on the lawn or the neighbour's car.

Doing it yourself versus hiring someone

Home machines are fine for light cleaning, but they tend to leave patchy stripes on drives when held too close or moved unevenly. They also make it easy to blow the sand out of paving joints without noticing. Commercial equipment and experience give a more even finish, particularly on large areas.