Roof Cleaning carried out by Beas Knees Pressure Washing in Redditch, Worcestershire

Roof Cleaning & Moss Removal in Redditch, Worcester & Birmingham

Moss stripped off your tiles by hand or low pressure, then a full biocide treatment so the roof keeps clearing for weeks after we leave, with a 2-year moss-return guarantee in writing and no high-pressure lance anywhere near your tiles.

10 years in the trade · 2-year moss-return guarantee · 100% recommended on Facebook (11 reviews)

10 years

In the exterior cleaning trade

2-year

Moss-return guarantee on roofs

£5,000,000

Public liability insurance

2 hours

Typical enquiry response

IPAF & PASMA

Working at height trained

Service overview

What Roof Cleaning Actually Involves

Roof cleaning is the removal of moss, lichen and algae from your tiles, followed by a biocide treatment that kills the spores left in the surface. It is not a cosmetic wash. Moss is a sponge; it holds rainwater against the tile, drags it under the laps in wind, and sheds into your gutters and downpipes until they stop draining. Clear the growth and the roof dries out between showers the way it was designed to.

James has been cleaning roofs across Redditch and Worcestershire for ten years, and the method is chosen on the day, on your roof, not decided in advance. Heavily matted growth on a sound concrete tile is scraped off by hand. Thinner growth, brittle tiles, or older slate get low-pressure washing instead. Both finish the same way: a biocide application across the whole roof plane so the regrowth is killed at the root rather than left to reseed from the ridge down.

Every roof clean includes clearing the debris we create, gutters, downpipes, the paving and beds underneath. You should not be sweeping up moss for a fortnight after a roof clean, and you will not be with us.

Who this is for

  • Homeowners with visible green or black staining across tiles or slate
  • Anyone whose gutters keep blocking with moss fragments and grit
  • Sellers who need the roof to stop pulling the kerb appeal down before photos
  • Landlords and letting agents keeping a portfolio maintained between tenancies
  • Commercial units, blocks and property managers: RAMS issued on request
  • Conservatory, extension and porch roofs alongside the main elevation

2-year moss-return guarantee on every roof clean.

Soft wash roof cleaning in progress on a tiled roof in Redditch, Worcestershire

Left untreated

What Happens If The Moss Stays Where It Is

Moss does not stop at the surface. It roots into the porous face of a concrete tile, holds water there, and in a Worcestershire winter that water freezes and expands inside the tile. That is what causes spalling; the flaky, crumbling face you see on old roofs, and it is not reversible. Once the tile face has gone, cleaning cannot bring it back and the tile is on borrowed time.

The second problem is water going where it should not. Thick moss on the lower courses wicks rainwater sideways and under the tile laps instead of letting it run off. Add blocked gutters full of shed moss and you get water running down the fascia and the wall face, which shows up months later as damp patches on internal walls, stained render and rotten timber behind the guttering.

The cost gap is what makes it worth acting on. A roof clean with a 2-year guarantee is a fraction of the price of replacing tiles, re-bedding a ridge, or drying out and redecorating an internal wall. Left alone, moss does not plateau; it thickens every season, and the longer it is there the more of the tile face comes off with it.

Mistakes that cost people money

  • Hiring anyone who puts a high-pressure lance on tiles, it strips the granular surface off and takes years off the roof
  • Cleaning without a biocide treatment, so the roof is green again inside two seasons
  • Walking the roof unnecessarily and cracking tiles that were perfectly sound before the visit
  • Using domestic bleach, which does nothing to the spores and runs off into planting
  • Leaving the moss debris in the gutters, which turns a roof clean into a blocked downpipe
  • Booking on price alone from someone with no working-at-height training or public liability cover

Our process

The Five-Step Roof Cleaning Process

01

Inspection

We look at the roof before quoting, from the ground, from access equipment, or from photos and Google Earth on larger properties. Tile type, condition, ridge and flashing state, growth depth and access all get checked, because those decide the method and the price.

02

Diagnosis & Method Selection

Sound concrete tiles with matted moss get hand scraping. Fragile, older or slate roofs get low-pressure washing. If a tile is already cracked or the ridge is loose, you are told before we start rather than after. Access is planned properly with the right platform or tower.

03

Moss Removal

The growth is taken off the whole roof plane, working top down so nothing dirty runs back over finished areas. Windows, paving, planting and drives below are protected and rinsed. Nothing is blasted into the laps or forced under the tiles.

04

Biocide Treatment

The full roof is treated with biocide once it is clear. This kills what the scraping cannot reach and keeps working after we leave, the roof carries on lightening over the following weeks rather than looking finished on day one and green again by spring.

05

Clear Down, Verification & Guarantee

Gutters and downpipes are cleared of everything we brought down, the ground is washed off, and we walk the job with you. Your roof clean is then covered by our written 2-year moss-return guarantee, plus our satisfaction policy: if you are not 100% happy, we re-clean free.

The benefits

What You Get From A Properly Cleaned Roof

The tile face stops degrading

No moss holding water in the surface means no freeze-thaw damage this winter. You are protecting the tile you already paid for rather than shortening its life.

Gutters stay clear for longer

Most gutter blockages in Redditch are shed moss and roof grit, not leaves. Take the source off and the gutters stop filling up every few months.

Two years of cover, in writing

The 2-year moss-return guarantee means if moss comes back within that window, we come back. That is a fixed obligation on us, not a hope.

Safe access, fully covered

IPAF and PASMA carded, Working at Height and Rooftop Awareness certified, Asbestos Awareness certified, and £5,000,000 public liability insured. No ladders wedged against your guttering.

One visit, one clear-up

Roof, gutters and the ground below are all dealt with in the same visit, so you are not chasing a second trade to sort out the mess the first one made.

A house that photographs properly

A clean roof is the single biggest visual change to a property from the street, it is what makes the whole house read as maintained rather than tired.

In detail

Roof Types, Methods & Situations We Cover

Roof cleaning is not one process. The right approach depends on the covering, its age, the growth type and how the roof is reached. Here is how we handle the roofs we see most across Redditch, Bromsgrove, Droitwich, Worcester, Solihull and Birmingham.

Concrete interlocking tiles

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The most common covering on post-war Redditch housing and the most likely to carry heavy moss, because the surface is porous. These take hand scraping well when the tile face is still sound. Where the face has already started to break down, we drop to low-pressure washing so we are not accelerating the wear. Biocide afterwards is essential on concrete; it is the porosity that lets moss re-root so quickly.

Clay tiles and natural slate

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Clay and slate are less porous but far less forgiving of impact and pressure. Slate in particular delaminates if it is hit hard, and nail fatigue means older slates move under weight. These roofs get low-pressure washing and biocide, with access planned to keep loading off the covering itself. If slipped or broken slates are spotted during the clean, you get told and shown.

Conservatory, extension and porch roofs

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Glass, polycarbonate and low-pitch tiled conservatory roofs are cleaned as their own job, not an afterthought. Polycarbonate scratches, glazing bars trap silt, and the run-off has to be managed so it does not stain the frames or the wall below. This is regularly booked alongside pure-water window cleaning so the whole conservatory is finished in one visit.

Biocide treatment and what it does

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Biocide is the part that decides whether the roof is clean in two years or green again. Applied across the full plane after the growth is removed, it kills the residual spores and lichen embedded in the surface that no scraper reaches. Results keep developing for weeks, lichen in particular pales and weathers off gradually rather than lifting on the day. A clean without biocide is a wash; a clean with it is a treatment.

Residential versus commercial roofs

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On domestic work the priorities are protecting planting, paving and glazing, and leaving the site spotless the same day. On commercial units, blocks and managed properties the priorities are access planning, safe working around pedestrians and vehicles, and paperwork: RAMS are issued on request, and we hold IPAF and PASMA cards for powered access and tower work. Letting agents and property managers are welcome, and repeat maintenance schedules can be set up so roofs are treated before growth becomes structural.

Access, height and safety equipment

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How the roof is reached matters as much as how it is cleaned. Depending on the property, that means towers, powered access, or working from the ground with high-reach equipment. Working at Height and Rooftop Awareness, Asbestos Awareness (relevant on older garage and outbuilding roofs), IPAF and PASMA cards are all held, and every job runs under £5,000,000 public liability cover.

Questions

Roof Cleaning: Your Questions Answered

Anything not covered here, call James on 07511 580040 , the enquiry line is 24/7 enquiry line.

How much does roof cleaning cost in Redditch?

Every roof is priced individually, size, pitch, covering, growth depth and access all move the number, so a flat rate would be a guess. Send photos or a postcode and you will have a response within 2 hours and a firm, fixed quote within 24. For larger properties we use a site visit or Google Earth to measure properly before quoting. There are no call-out fees and no obligation.

How long does a roof clean take?

Most domestic roofs are done in a single day, including the biocide application, the gutter clear-down and the clean-up. Very large, steep or difficult-access roofs, or jobs combined with render cleaning and gutter clearance, may run to two days. You will be told which before you book, not on the day.

Do you use a pressure washer on roof tiles?

Never at high pressure. High pressure strips the granular surface off a concrete tile and drives water under the laps, it looks impressive for a week and costs you years of roof life. We hand scrape where the tile is sound, use low-pressure washing where it is not, and treat with biocide either way.

What does the 2-year guarantee cover?

Our roof cleaning carries a 2-year moss-return guarantee. If moss returns within two years of the clean, we come back and deal with it. On top of that we run a satisfaction guarantee across all our work: if you are not 100% happy with the job, we will re-clean it free of charge.

How long will my roof stay clean?

The biocide keeps working for weeks after the visit and holds regrowth back well beyond that, which is why we are comfortable guaranteeing against moss return for two years. Roofs under heavy tree cover or on shaded north-facing elevations green up faster than open, south-facing ones, so those benefit from a maintenance treatment on a longer cycle.

Will cleaning damage my tiles?

Not when the method matches the covering, which is why we inspect before we quote. Cracked, slipped or already-spalling tiles are flagged to you before work starts rather than discovered afterwards. We are £5,000,000 public liability insured and hold Working at Height, Rooftop Awareness, IPAF and PASMA qualifications.

Do you clear the gutters as part of the roof clean?

Yes. Everything we bring off the roof is cleared out of the gutters and downpipes before we leave, and the ground below is washed off. If your gutters were already blocked before we arrived, mention it and we will quote full gutter clearance; we clear up to 40 feet from the ground with fascia cleaning included.

Can you clean a roof in winter or in the rain?

Roof cleaning runs through most of the year. Light rain is not a problem for moss removal, though biocide application needs suitable conditions to work properly, so we will move the treatment rather than apply it badly. Frost, high wind and unsafe access will always postpone a job, nothing goes ahead if the access is not safe.

How quickly can you come out?

Enquiries are answered within 2 hours and quotes issued within 24 hours. Availability depends on the week, but customers regularly comment on being fitted in inside a day for urgent work. Our enquiry line is open 24/7: call, message or use the form and James will come back to you personally.

Do you clean roofs outside Redditch?

Yes: Redditch, Alcester, Evesham, Bromsgrove, Droitwich, Worcester, Solihull and Birmingham are all covered, domestic and commercial. If you are just outside that list, ask; it is usually still workable.

Request an estimate

Get The Moss Off Before It Costs You Tiles

Send a photo or your postcode and you will have a reply within 2 hours and a firm quote within 24. Every roof clean is covered by our 2-year moss-return guarantee, £5,000,000 public liability insurance, and a free re-clean if you are not 100% happy.

  • £5,000,000 public liability insurance
  • Free re-clean if you are not 100% happy
  • Reply within 2 hours, firm quote within 24
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