Professional Commercial Roof Cleaning Services
Moss, Algae and Lichen Removal for UK Business Premises
Your roof works harder than any other surface on the building and is usually the last one anybody looks at. By the time moss is visible from the car park, it is already holding water against the covering, feeding the gutters with debris and adding weight the roof was never specified to carry.
Our commercial roof cleaning service removes moss, algae, lichen and atmospheric staining using low-pressure steam rather than high-pressure jet washing, so the covering is cleaned without forcing water under laps or stripping coatings. Far-reaching access equipment means we can reach most commercial roofs without scaffolding and without closing your site.
Get a Quote ↓- Moss, algae, lichen and organic staining removed from commercial roofs
- Low-pressure steam, safe on tiles, slate, metal sheet and coated panels
- Far-reaching access equipment, so most roofs are cleaned without scaffolding
- Free, honest commercial roof cleaning quote and a site assessment before any work is priced
Get Your Free Commercial Roof Cleaning Quote
Tell us about your roof and we'll come back the same working day with a tailored, no-obligation price.
Or give us a call on 01527 337063
Looking for professional commercial roof cleaning? H2O Restoration cleans commercial and industrial roofs across the UK, from offices, retail units and schools to warehouses, hospitality venues and managed estates.
We remove moss, algae, lichen, bird mess and weathering marks with controlled steam and manual clearance. Then we check that the water is getting off the roof and into the drainage as it should. Over 20 years of external cleaning experience, fully insured, and planned around your operating hours.
If Any of This Sounds Like You, You're in the Right Place
Most of the facilities managers, landlords and site managers who book commercial roof cleaning are dealing with one of the same handful of problems. See if yours is on the list.
Repeat gutter call-outs are usually a roof problem, not a gutter problem. Moss breaks up, washes down the slope and packs into the outlets. Clearing the source stops you paying for the same visit three times a year.
Green algae and black lichen read as poor maintenance to tenants, buyers and surveyors, whatever the condition of the fabric underneath. A roof clean ahead of a survey, valuation, insurance review or lease handover changes the first impression the building gives.
High-pressure water on a pitched or profiled roof can drive moisture under laps and flashings, lift bedding and shorten the life of the covering. Steam works through heat instead of force, which is why every commercial roof cleaning job we take on is steam-led rather than jet washed.
You shouldn't have to. We plan access, exclusion zones and timings around your operating hours, deliveries and public footfall, and we agree to all of that before we arrive, rather than on the day.
Recognise the Problem? Let's sort it.
Book a free, no-obligation commercial roof cleaning quote online, or skip the form and speak to our team about access and scheduling directly.
Phone lines open Monday to Friday 7am - 7pm
Commercial Roof Cleaning Across the UK
The UK climate is close to ideal for moss, algae and lichen: damp, mild and rarely dry for long. North-facing slopes, shaded elevations and roofs under trees hold moisture for longer, so they colonise fastest. The longer growth is left, the deeper it works into the surface and the joints. Every roof cleaning project starts with an assessment rather than a price. We look at the roof, its material, its condition and how we can safely reach it before quoting, rather than pricing off a rate per square metre. Our commercial roof cleaning removes:
Moss growth and loose organic matter
Cleared from the covering, the laps and the roof details, so it stops migrating into gutters and outlets.
Algae and green staining
The green film that makes a well-run building look tired, lifted with heat rather than force.
Lichen and biological deposits
The black, white and orange patches that bond hard to tile and slate and do not respond to a cold rinse.
Atmospheric grime and weathering marks
Pollution deposits and traffic film, particularly on roofs near busy roads and industrial estates.
Bird mess and surface soiling
Cleaned and sanitised, with the surrounding areas protected while we work.
Leaf debris and drainage obstructions
Cleared from valleys, outlets and hoppers where gutter clearance is included in your quote, so the roof drains properly once the cleaning is finished.
Commercial Roof Cleaning for Every Roof Type
No single method suits every roof. Some types of roof will take pressure and some will not, so we match temperature, pressure and technique to the covering, its age, its condition and the roofing material type before work starts, because the right approach helps protect roofing materials, improve longevity and limit degradation from organic growth.
01 Clay and Concrete Tile
Moss and lichen are removed at controlled pressure, with care taken around ridges, verges and bedding so nothing is dislodged.
02 Natural Slate
A delicate covering that will chip, crack and slip under high pressure. Cleaned at low pressure with manual clearance where needed.
03 Profiled Metal Sheet
Organic growth and grime lifted from industrial roof sheets without scoring the finish or forcing water past laps and fixings.
04 Coated Commercial Panels
Cleaned with settings chosen to protect the factory coating, because once the coating goes, the panel ages fast, with manufacturer-approved cleaning solutions used where required to avoid material degradation.
05 Canopies, Entrances and Walkway Roofs
The roofs your customers actually stand under, cleaned with the surrounding area protected and pedestrian routes managed.
06 Low-Level Extensions and Outbuildings
Flat and shallow-pitch areas, plant enclosures and ancillary structures, including flat roofs and commercial membrane roof sections, cleaned and cleared alongside the main roof in one visit, with low-pressure washing often the safer approach.
07 Roofs we handle differently
We clean asbestos cement roofs, but they require specialist care, a survey and a carefully planned treatment approach. Before any work begins, we assess the roof’s condition and establish suitable cleaning methods, access arrangements and waste-handling procedures. Fragile coverings and roof lights also require careful planning to ensure safe access. Where there are structural concerns, we recommend a survey to confirm whether and how cleaning can safely proceed.
How We Deliver Our Commercial Roof Cleaning Service
Our commercial roof cleaning uses steam systems that reach temperatures a contractor's cold-water machine cannot. Heat does the work, so we can drop the pressure right down and still lift growth that is rooted into the surface, giving you a professional roof cleaning result without harsh abrasion. Routine cleaning can also support warranty compliance where manufacturers require ongoing roof care. Access is planned as carefully as the cleaning. Far-reaching equipment lets us work from the ground on many commercial roofs, which keeps people off the covering, avoids scaffolding costs and shortens the time we are on your site, with work planned to meet health and safety requirements for roof access. Roof assessments and on-site checks help identify hazards before and during the cleaning process.
OUR METHOD
H2O Commercial Roof Cleaning
- Site assessment covering roof material, condition, access, drainage and site activity, with specialist cleaning equipment selected to suit the roof
- Access planned in advance, with exclusion zones and pedestrian routes agreed before we arrive
- Protection of entrances, glazing, planting and drainage points before work starts
- Manual removal of heavy moss and loose debris where required, including hand tools to scrape the moss off the thickest areas, before any chemical cleansers are considered
- Low-pressure steam cleaning at settings matched to the covering; where suitable for the roof, soft wash roof cleaning uses low-pressure and safe chemicals as an alternative
- Biocide treatment to help prevent moss and biological regrowth after cleaning where the roof and the client both suit it; regular roof cleaning may also combine this with other preventative measures, depending on the roof
- Final review with honest maintenance recommendations, including anything we think needs a repair
Standard Jet Washing Contractors
- Fixed high pressure applied to every roof regardless of covering or age
- Risks driving water under laps, tiles and flashings, with leaks appearing weeks later
- Can strip coatings, erode bedding and shorten the life of tile and slate
- Growth blasted off the surface only, so it returns within a season
- Debris left in gutters and outlets, moving the problem rather than solving it
- Little planning around access, exclusion zones or live business operations
- No honest assessment of what is cleanable and what needs repairing
Here's What Our Customers Say
The UK’s Trusted Commercial Roof Cleaning Specialists
Safe and Specialist Equipment
Steam systems with fully adjustable temperature and pressure, matched to the covering rather than applied at one setting across the whole roof.
Far-Reaching Access Equipment
Market-leading access equipment reaches height and span on most commercial roofs, which keeps weight off fragile coverings and avoids the cost and lead time of scaffolding.
20+ Years of External Cleaning Expertise
Over two decades cleaning commercial, industrial and heritage exteriors. We understand how roof coverings behave and what a cleaning method will do to them over the following winter.
Minimal Disruption, Fully Insured
We work around your operating hours, staff, deliveries and visitors as a fully insured commercial roof cleaning company, and documentation can be supplied with the quotation. On a live site, peace of mind usually comes down to exactly that - the right paperwork on file before anybody has to ask for it.
Commercial Roof Cleaning Questions, Answered
How often should a commercial roof be cleaned?
Most commercial roofs benefit from cleaning every one to two years. Shaded roofs, north-facing slopes and sites surrounded by trees need attention more often, because they hold moisture for longer. The same applies to buildings near busy roads or industrial estates, where atmospheric deposits build up faster.
What is the best equipment for commercial roof cleaning?
High-pressure jet washing can seriously damage roof tiles and considerably reduce their lifespan. We use steam cleaning instead, which lifts set-in algae, moss and staining through heat at much lower pressure, without risking the integrity of the covering.
Will roof cleaning damage the tiles or cause leaks?
Not when the method suits the covering. In fact, commercial roof cleaning helps prevent leaks and longer-term structural damage by removing buildup that is causing damage over time. The damage people associate with roof cleaning comes from high-pressure water forced under laps, tiles and flashings, while wet moss adds weight and stresses the roof structure. We clean at low pressure with settings chosen for the material, and we assess condition before starting so a covering that is already failing is not made worse.
Do you use chemicals or biocides?
We keep chemical use to a minimum and lead with steam and manual clearance, with biocide treatments commonly included where regrowth prevention is needed. Where a biocide anti-fungal treatment is worth applying, we’ll explain what it is, why we are recommending it to prevent moss regrowth after cleaning, and how it is controlled on site before you agree to it.
Will the work disrupt our business?
We plan every commercial roof cleaning visit around your operating hours, access routes and footfall, using phased working and exclusion zones where needed. Far-reaching access equipment also means we are usually working from the ground rather than occupying the roof for days.
Do you clean the gutters at the same time?
On most roofs it makes sense to. Moss cleared from a roof has to go somewhere, and if it settles in the gutters, valleys and outlets you get the same blockages and overflows you were trying to fix in the first place.
Gutter clearance is priced as its own line on the quote rather than assumed, so you can see what it costs and decide whether to include it. If we think the roof clean makes it necessary, we will tell you at assessment rather than on the day.
Can you remove every stain from the roof?
Most organic growth and staining comes off or improves significantly. Marks caused by surface ageing, failed coatings, spalling or corroded fixings will not clean out, and we will tell you which is which at assessment rather than promising a result we cannot deliver.
Are you insured for work at height on commercial premises?
Yes. We provide a fully insured commercial service and can supply documentation, including insurance details and specific RAMS (Risk Assessments and Method Statements) where required, as part of the quotation and site planning process. Access is planned at the same time, and on most commercial roofs our far-reaching access equipment means we work from the ground rather than putting people and weight on the covering.
Get in Touch
Ready to Get Your Roof Back Under Control?
We quote on roof size, covering, condition and access, with no obligation to proceed. Contact H2O Restoration to arrange a commercial roof cleaning assessment and we will recommend the safest effective method for your building.
Phone lines open Monday to Friday 7am - 7pm