01633 759336wegotyoucovered45@gmail.comNewport, Cardiff, Bristol & South Wales 4.7/5 from 57 MyBuilder reviews HomeAboutServices Service Areas Our WorkReviewsContact01633 759336Free Estimate Home/Services/Roof Moss & Driveway CleaningRoof & Driveway Cleaning # Roof Moss & Driveway CleaningIn Newport, Cardiff and Across South Wales Moss on a roof and green staining on a driveway aren't just cosmetic: moss holds moisture against tiles and slowly lifts them, and algae makes paving slippery and pushes joints apart. We use the right method for each surface, soft washing and scarifying where tiles need protecting, pressure and rotary cleaning where hard paving can take it, then re-sand and seal where it's needed: priced against what your property actually needs, not a blanket package. Request Your Free Estimate01633 759336 Rated 4.7/5 from 57 verified MyBuilder reviews, free written estimate, no pressure selling. 4.7/5 from 57 reviews Verified MyBuilder reviews from customers across Newport, Cardiff and the surrounding areas. No pressure selling We talk you through the condition found and the result achieved, so you're not just taking our word for it. No pressure selling If a surface doesn't need treatment, or a cheaper option will do, we say so, the options and reasoning are laid out in writing. One in-house team Roof cleaning and driveway cleaning are handled by the same crew who do our roofing and driveway installation work. Recent roof moss & driveway cleaning work ## Recent work See more of our work ## What roof and driveway cleaning actually involves Roof cleaning is about removing moss, lichen and algae without damaging the tiles or slates underneath, which is a very different job to blasting a driveway clean. Moss is scarified off by hand or with a soft mechanical scraper, working with the lay of the tiles rather than against it, because aggressive pressure washing on a pitched roof can crack tiles, force water up under the laps, and strip the granules off asphalt-based felt roofs entirely. A biocide treatment is then usually applied to kill off remaining spores and slow regrowth, since scraping alone only removes what's visible, not what's already established in the tile surface. Driveway and patio cleaning is a different discipline because hard, flat, well-bonded surfaces can generally take direct mechanical cleaning that a roof never could. Pressure washing and rotary surface cleaners lift ground-in dirt, algae and moss from resin, block paving, tarmac and slabs, and for block paving in particular this is usually followed by re-sanding the joints, since the cleaning process washes out a proportion of the jointing sand along with the dirt. Sealing afterwards slows the rate algae and staining return, particularly on resin and natural stone. The two jobs are often booked together because they tend to need doing around the same time: moss thrives in the same damp, shaded, low-airflow conditions on a roof as algae does on a driveway below it, so a property that needs one very often needs the other. ## Who needs it, and when Roofs facing north or shaded by trees, and those in the damper valley areas around Pontypool, Ebbw Vale and the wider Gwent countryside, tend to grow moss faster than open, sun-facing roofs in more exposed spots, moss needs sustained damp to establish, so anything that keeps a roof wet for longer accelerates it. If you can see moss cushions building up along the lower edge of tiles or in the valleys, or green streaking down from the ridge, that's the point to get it looked at before it spreads further. Driveways develop the same pattern: shaded areas, spots near overhanging trees, and anywhere water tends to sit rather than drain away, will green up faster than open, well-drained paving. Block paving jointing sand that's washed thin or gone soft with moss growth is often the first visible sign that a re-sand is overdue. Neither job is purely cosmetic timing: moss on a roof left long enough works its way under tile laps and holds water against the tile surface permanently, and algae on paving eventually becomes a genuine slip hazard, not just an appearance issue. ## Why the method matters more than the equipment The single biggest risk in this kind of work is using the wrong cleaning method for the surface, a driveway pressure washer turned on a roof will strip granules off felt shingles and crack older clay or concrete tiles, while a gentle scarifying approach that's correct for a roof would barely touch ingrained algae on a driveway. Choosing the right method for each surface is the actual skill; the equipment itself is secondary. Soft washing, using a lower-pressure application with a biocide solution rather than mechanical force, is the safer approach for roofs, render and anything with a fragile or granulated surface, letting the chemical treatment do the work of killing moss and algae rather than physically blasting it off and risking damage. Pressure washing and rotary surface cleaners are reserved for hard, bonded surfaces that can take direct mechanical force without lifting or cracking. Getting this distinction wrong is how roof cleaning goes from a maintenance job to a repair job; a pressure-washed roof can end up needing tiles replaced that moss alone would never have damaged, which is the opposite of what the customer asked for. ## What it costs to leave it Moss on a roof doesn't just sit on the surface, it grows roots into the texture of the tile and holds water against it permanently, which is exactly the environment that causes concrete and clay tiles to spall and crack in freeze-thaw conditions over winter. What starts as a patch of moss in a shaded valley gradually spreads across the whole slope, and by the time it's visible from the street, it's usually been holding moisture against the tiles for a couple of seasons already. On a driveway, algae and moss growth doesn't just look neglected; it makes the surface measurably more slippery when wet, which becomes a real safety issue on a sloped driveway or a step-down patio, particularly in winter. Left long enough, moss growing in block paving joints pushes the blocks apart, which lets more water and organic matter into the joint, which grows more moss; a cycle that ends with a paving surface that needs full re-sanding or in bad cases relaying, rather than a straightforward clean. The cost of ignoring both is the same shape: a job that would have been a half-day clean becomes a job that also needs tile replacement or paving re-laying, because the underlying material has actually been damaged by the neglect, not just discoloured by it. ### Mistakes we see most - Using a high-pressure washer directly on roof tiles, cracking them or stripping felt shingle granules - Scraping moss off without a biocide treatment afterwards, so it regrows within a season - Pressure washing block paving without re-sanding the joints afterwards, leaving them open to weeds and further moss - Ignoring green staining on a shaded patio until it becomes a genuine slip hazard - Sealing a driveway surface before it's fully cleaned, trapping algae and staining underneath the sealant How the job runs ## Our five-step process - 1 ### Inspection and assessment We check the roof or driveway to see how established the moss or algae growth is, the condition of the tiles or paving underneath it, and whether cleaning alone will do the job or whether repairs are needed first. - 2 ### Method and written options We explain which approach suits the surface, soft washing and scarifying for roof tiles, pressure washing or rotary cleaning for driveways and patios, and set out the cost and reasoning in writing before starting. - 3 ### Cleaning Moss is scarified from roof tiles by hand or soft mechanical tool without forcing water under the laps; driveways and patios are pressure washed or rotary cleaned to lift ingrained dirt, algae and staining. - 4 ### Treatment and re-sanding A biocide treatment is applied to roofs to slow regrowth of moss and algae spores; block paving joints are re-sanded with kiln-dried sand where cleaning has washed the original jointing out. - 5 ### Sealing and handover Sealing is applied to driveways and patios where it will help resist future staining, and you're talked through the before and after condition of the finished surfaces. What you get ## The result you are paying for ### Fast turnaround Most domestic roof cleans and driveway cleans are completed within a single day, weather and access depending. ### Safer surfaces underfoot Removing algae from driveways and patios cuts down the slip risk that builds up on damp, shaded paving over time. ### Protects the material, not just the look Correct methods stop moss holding moisture against roof tiles and stop paving joints opening up, protecting the structure underneath the surface. ### Priced to match the actual job Light moss growth is priced differently to a heavily established roof, and a small patio differently to a full driveway, nothing is sold as a flat package regardless of condition. ### Consistent, repeatable results Because the same crew that installs roofs and driveways does the cleaning, the methods used are ones we already know are safe for each surface type. ### Clear before and after explanation Being talked through the surface before and after cleaning gives you a clear sense of the condition improvement, useful ahead of a sale or simply for your own peace of mind. In detail ## Materials, methods and the variations that matter ### Soft washing versus pressure washing Soft washing applies a cleaning or biocide solution at low pressure, relying on the chemical action to kill moss, algae and lichen rather than mechanical force to blast it off. It's the appropriate method for roof tiles, render, and any surface where high pressure risks driving water under laps or stripping a protective granule coating. Pressure washing uses mechanical force at higher pressure to physically remove ingrained dirt and growth, which suits hard, bonded, flat surfaces like driveways, patios and paths that can take that level of direct force without damage. Rotary surface cleaners, a pressure washer head that spins multiple jets across a flat surface, are used on larger driveway and patio areas to clean evenly without the visible streaking a single moving jet can leave, and to cover ground faster than a standard lance on bigger jobs. ### Scarifying moss without damaging tiles Scarifying is the process of physically lifting moss cushions and growth off roof tiles using a scraper or soft mechanical brush worked in the direction the tiles overlap, rather than against it, so the tool doesn't catch under a lap and lift or crack the tile. Established moss with deep root growth needs more careful, gradual removal than a light surface film, and older or more brittle concrete and clay tiles need a gentler touch than newer, harder-fired tiles. A biocide treatment is applied after scarifying to kill remaining spores in the tile surface and roof valleys, since physical removal alone doesn't reach growth that's already embedded, and regrowth without treatment is usually visible again within a single season. ### Re-sanding and sealing driveways Block paving relies on kiln-dried sand locked into the joints between blocks to hold the pattern rigid and stop individual blocks rocking under load; pressure washing inevitably lifts some of this sand out along with the dirt and moss, so re-sanding afterwards is standard practice rather than an upsell. The sand is swept into the joints and vibrated in, sometimes with a plate compactor on larger areas, to fully settle it. Sealing, typically applied to resin, natural stone or block paving after cleaning, slows the rate at which algae, oil staining and general dirt re-establish, extending the interval before the next clean is needed. Sealing before a surface is fully clean simply traps existing staining and growth underneath a clear layer, which is why cleaning always has to be completed and allowed to dry before any sealant goes down. ### Residential roofs versus larger or commercial areas Domestic pitched roofs are cleaned tile by tile with careful attention to individual tile condition, since a single cracked tile on a house roof is a leak risk. Larger or flatter commercial roof areas, and bigger driveway or car park surfaces, can generally be treated more uniformly across a wider area, though the same principle of matching method to material still applies; a flat felt roof still needs soft washing, not pressure washing, regardless of its size. Questions we get asked ## Roof Moss & Driveway Cleaning: straight answers ### How is roof and driveway cleaning priced? We assess how established the moss or algae growth is, the size of the area, and access, then give a written price for that specific job. A light seasonal driveway clean costs differently to a heavily moss-covered roof, so we won't quote a flat figure without seeing the property. ### How long does a clean take? Most domestic roof cleans and driveway or patio cleans are completed in a single visit, though larger areas or heavier growth can take longer. We'll confirm timing once we've seen the extent of the work. ### Will pressure washing damage my roof? We don't pressure wash roof tiles directly: that risks cracking tiles and stripping felt shingle granules. Roofs are cleaned with soft washing and careful scarifying instead, which is safer for the material. ### How do I maintain a driveway or roof after cleaning? A biocide treatment on the roof slows moss regrowth, and sealing a driveway or patio after cleaning slows future staining, but neither is permanent: periodic re-treatment keeps both looking clean for longer. ### How long will the results last? It depends heavily on the property, a shaded, damp roof or driveway will need attention again sooner than an open, sun-facing one. We can talk through what to expect for your specific property, but we won't put a fixed guarantee figure on regrowth timing. ### Can you fit in an urgent clean before a house sale or visit? Get in touch and we'll do what we can to accommodate a tighter timeline, though the priority is doing the job with the right method for the surface rather than rushing it. ### Does weather affect cleaning work? Yes: roof cleaning in particular needs dry, calm conditions for safe access and effective biocide application, and heavy rain can wash treatment away before it's had time to work. We'll reschedule around the weather where needed. ### Do properties in Newport, Cardiff and Bristol need different treatment? Shaded, damp locations around Newport's valleys and parts of Ebbw Vale and Pontypool tend to grow moss faster than open, exposed sites, while some Cardiff and Bristol properties with mature tree cover see the same pattern on driveways. We assess each property individually rather than assuming based on postcode. ## Related services - Driveways & PatiosResin bound, block paving, tarmac and patios, properly excavated, drained and edged to stay flat. - Roof RepairsSlipped tiles, leaks, ridge and valley faults traced and repaired properly, not patched over. - Gutter RepairsBlockages cleared, joints sealed and sagging runs re-hung so water leaves the building, not the brickwork.All servicesOur workReviewsContact ## Where we do this work Roof Moss & Driveway Cleaning carried out across Newport, Cardiff, Bristol and the South Wales valleys, same team, same standard, whichever town you are in. - Newport - Cardiff - Bristol - Ebbw Vale - Pontypool - Bridgend - Swansea - Port Talbot - Neath - Magor and Undy - Caldicot - Chepstow ## Get your roof and driveway cleaned properly, without the damage Free written estimate, method matched to your surface: call Ashley King on 01633 759336. Request Your Free Estimate01633 759336 Roofing, guttering, roofline, driveway and landscaping specialists working across Newport, Cardiff, Bristol and South Wales. A family trade with 85 years of combined experience across three generations. Insurance-backed guarantees on all work over £3,000. Registered at Companies House, company number 16345662. Read our 4.7/5 MyBuilder reviews ## Services - Roof Repairs - New Roof Installations - Gutter Repairs - New Gutter Systems - Fascia & Soffit Repairs - New Fascia, Soffit & Guttering - Lead Work - Driveways & Patios - Roof Moss & Driveway Cleaning ## Service Areas - Roofing & driveways in Newport - Roofing & driveways in Cardiff - Roofing & driveways in Bristol - Roofing & driveways in Ebbw Vale - Roofing & driveways in Pontypool - Roofing & driveways in Bridgend - Roofing & driveways in Swansea - Roofing & driveways in Port Talbot - Roofing & driveways in Neath - Roofing & driveways in Magor and Undy - Roofing & driveways in Caldicot - Roofing & driveways in Chepstow ## Contact We’ve Got You Covered Roofing & Driveways 01633 759336wegotyoucovered45@gmail.com16 Caerleon Road, Newport, United Kingdom, NP19 7BWMonday to Saturday, 9am to 5pmRequest Your Estimate © 2026 We’ve Got You Covered Roofing & Driveways. All rights reserved. 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