- Since 2018Cleaning and maintaining commercial buildings across the North West
- Fully insuredComprehensive public liability cover on every job
- Trained teamsAccredited operatives, trained for work at height
- 24 hoursTypical turnaround on a written quote
Moss on a commercial roof is not just cosmetic. It holds water against the sheet or tile, it breaks off in wind and blocks the gutters below, and on a coated metal roof it accelerates the failure of the coating it is sitting on.
How we clean a roof depends on what is on it. A commercial roof carrying years of thick moss cannot realistically be soft washed, so those get pressure washed, usually with rotary equipment that gives an even pass rather than a lance held close to the sheet. Lighter growth, painted finishes and delicate coverings get a soft wash instead.
Roof types we work on
Profiled metal sheet, composite panel, fibre cement, single ply membrane, felt, slate and concrete tile. Each takes a different approach: a membrane roof needs a gentle detergent and careful rinsing, while a fibre cement sheet on a 1970s factory needs handling as potential asbestos-containing material until proven otherwise.
If we suspect asbestos cement, work stops until you have a survey. We will not disturb a sheet on a maybe.
Treatment, not just cleaning
Scraping moss off gets you a clean roof for about eighteen months. The biocide we apply after cleaning kills the spore base, so regrowth is much slower and the next clean is smaller and cheaper.
On a large industrial roof we usually recommend cleaning in sections across two or three years rather than all at once, which spreads the cost and keeps the whole roof on a rolling cycle.
How we approach it
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Method matched to the roof
Heavy moss on profiled sheet needs pressure. A painted finish or a membrane does not. We survey first and pick accordingly.
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Pressure used properly
Rotary heads and controlled nozzle angles, so laps and flashings are not blasted open and coatings are not stripped.
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Biocide slows regrowth
The treatment keeps working after we leave, so the roof stays clear for years rather than months.
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Gutters cleared afterwards
Loosened moss ends up in the gutters. We clear them as part of the job, not as an extra visit.
Ready for a price?
Send a few photos and a postcode and we will come back with a fixed written quote, usually within one working day.
Frequently asked questions
Yes. It holds moisture against the covering, which speeds up corrosion on metal sheet and freeze-thaw damage on tile and fibre cement. It also breaks loose and blocks gutters and outlets, which is how most roof-related water ingress actually starts.
Both, depending on the roof. Heavy moss on an industrial metal roof will not shift with a soft wash, so that gets pressure washed, normally with rotary equipment for an even pass. Painted finishes, membranes and lighter growth get a soft wash. What matters is nozzle angle and distance: damage comes from a turbo nozzle held close to a lap, not from pressure itself.
Typically three to five years before another clean is worth doing, depending on shading, tree cover and how exposed the roof is. North facing and heavily shaded slopes regrow fastest.
Not until it has been surveyed. If a sheet is confirmed as asbestos containing, the work falls under different regulations and needs a licensed contractor. We will tell you straight away rather than take the job on.
Yes. We cordon the working area below, protect any rooflights, and coordinate with your site team on deliveries and pedestrian routes.
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Where we work
We are based in Manchester and cover the whole of the North West from here. For roof work and multi-site contracts we travel nationally, and have worked on sites from Bristol to Leicester. If your site is not on the list, ask anyway.
- Manchester
- Liverpool
- Chester
- Warrington
- Preston
- Blackpool
- Lancaster
- Bolton
- Stockport
- Wigan
- Rochdale
- Salford
- Leeds
- Sheffield
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Request a quote
Send us the details and we'll come back with a fixed price. No pressure, no sales calls.