Exterior surfaces get dirty faster than most businesses realise. Algae, moss, traffic film, bird mess and weathering make a building look neglected, and they can damage the surface underneath. Commercial pressure washing removes that build-up quickly and safely when it is done with the right pressure and method. This guide explains what it covers, where it is used and how to avoid damaging surfaces.
What Is Commercial Pressure Washing?
Commercial pressure washing, also called jet washing, uses pressurised water, sometimes with cleaning agents, to remove dirt and growth from exterior surfaces of commercial buildings and sites. Different surfaces need different pressures, so a professional matches the equipment and method to the material.
What Can Be Pressure Washed?
- Building facades, cladding and render
- Entrances, forecourts and pavements
- Car parks and loading bays
- Paths, steps and walkways
- Shopfronts and signage areas
- Roofs and gutters, where appropriate and safe
- Bins areas, yards and service areas
High-Pressure vs Low-Pressure Cleaning
Higher pressure is not always better. Our external cleaning service uses two approaches depending on the surface:
- High-pressure jet washing for robust surfaces such as concrete, paving and some cladding and render.
- Low-pressure treatment for delicate surfaces and for algae, using treatment that kills growth and lets it break down without blasting the surface.
Using excessive pressure on soft brick, render or painted surfaces can cause damage, so the method should be agreed before work starts.
Want your building exterior to look its best?
Proactive Cleaners provides high-pressure and low-pressure external cleaning for commercial buildings, delivered by trained and insured teams.
Why Pressure Wash a Commercial Property?
- First impressions: a clean facade and entrance shows the business is well run.
- Safety: algae and moss make paths and steps slippery, and removing them reduces slip risk.
- Protecting the building: growth and pollution can hold moisture against surfaces and accelerate decay.
- Maintaining value: well-kept exteriors support property value and tenant retention.
- Preparing for other work: cleaning is often a first step before painting, repairs or sealing.
How Often Should Commercial Exteriors Be Pressure Washed?
Frequency depends on the location, surface and exposure. Entrances and walkways in busy areas may need cleaning several times a year, while facades are often cleaned annually or every couple of years. Shaded or damp areas collect algae faster. A site visit will show how quickly your surfaces soil.
Health and Safety in Exterior Cleaning
External cleaning involves water, chemicals and sometimes work at height. Choose a provider that:
- Carries public liability insurance
- Provides risk assessments and method statements
- Uses trained staff, with access qualifications such as IPAF and PASMA where equipment is used at height
- Manages run-off, drains and the safety of passers-by
- Controls cleaning chemicals in line with COSHH
Our teams hold CSCS, IPAF and PASMA qualifications and are insured. Read more about our external cleaning service.
Pressure Washing vs Other Exterior Cleaning
- Window cleaning: see our window cleaning service for glass and frames.
- High-level cleaning: for hard-to-reach areas, see high-level cleaning.
- Internal hard floors: use machine scrubbing instead, see our commercial hard floor cleaning guide.
Cost of Commercial Pressure Washing
Cost depends on the area, access, surface type, level of soiling and whether equipment such as access platforms is needed. Quotes are normally based on a site visit or measured area. For general guidance on pricing factors, see our commercial cleaning prices in London guide.
Pressure Washing With Proactive Cleaners
We deliver exterior cleaning for commercial properties across London and the South East, from entrances and forecourts to facades and cladding. Request a free quote or see our areas we cover.
Frequently Asked Questions
What is commercial pressure washing?
It is the cleaning of exterior surfaces of commercial properties using pressurised water, sometimes with treatments, to remove dirt, algae and staining.
Can pressure washing damage my building?
Yes, if the pressure is too high for the surface. Professionals match pressure and method to the material and may use low-pressure treatment for delicate surfaces.
How often should a building be pressure washed?
Entrances and walkways may need it several times a year, while facades are often cleaned every year or two, depending on location.
Does pressure washing remove algae and moss?
Yes, particularly when combined with a treatment that kills the growth.
Is it safe for pedestrians?
With proper planning, signage and barriers, yes. Work is often scheduled for quieter times.
Do I need permission to pressure wash a building?
Leased buildings often require landlord or management approval, and some listed or protected buildings have restrictions. Check before you book.
