Soft wash render cleaning in Bolton, Horwich and Westhoughton: green algae, black staining and mould removed from K-rend, monocouche and pebbledash, then a biocide treatment to keep it clean. No pressure washer on the render.
Tell us your postcode in Bolton and the render type and we will come back to you the same day.
Modern renders like K-Rend, monocouche and Weber are excellent at insulating and protecting a home, but their porous surface is exactly what algae, lichen and fungi like. In the damp North West climate that shows up as green staining, red streaks and black patches, usually worst on north-facing walls and under window sills.
Left alone, the growth does not just look bad. It holds moisture against the render and can penetrate it, which is how a cleaning job turns into a repair or repainting job.
We check the type of render and how heavy the growth is, then protect plants, windows, doors and delicate areas before starting.
Using low-pressure equipment we apply a professional-grade biocide wash that breaks down the red, green and black algae without damaging the render.
Where the treatment needs it, we gently rinse the surface to reveal a clean, bright and even finish. Some stains keep fading for a few weeks as the biocide finishes its work.
Paths, drives and beds are rinsed and cleared, and you get before and after photos.
Bolton sits under the West Pennine Moors and its rendered homes take the brunt of the rain. K-rend and monocouche on the newer developments in Horwich, Lostock and Bromley Cross go green on the shaded elevations within a few years, and the pebbledash semis across Heaton, Halliwell and Farnworth collect black staining and grime in the rough surface.
We clean render with a low-pressure soft wash. The biocidal solution goes on across the whole wall, kills the algae, mould and lichen at the root, and is then rinsed away gently. No pressure washer means no cracked thin-coat render, no blown pebbles and no water forced behind the wall.
From Horwich and Westhoughton to Farnworth, Little Lever and Egerton, we cover the whole of Bolton for homeowners, landlords and businesses. Fixed quote before we start, before and after photos when we finish, usually with you within the week.
A follow-up biocide treatment keeps the growth away for three to five years on most walls. North-facing walls up towards Smithills and Rivington may need re-treating sooner, and we will tell you honestly what to expect.
For the full method, render types and pricing see our render cleaning service page. We also offer roof cleaning, gutter cleaning and driveway cleaning on the same visit, and commercial render cleaning for business premises.
We clean render across the whole of Bolton. If your area is not listed, get in touch, we almost certainly cover it.
Also see our render cleaning pages for nearby areas:
We also offer roof cleaning in Bolton and gutter cleaning in Bolton.





“Peter from hydrocleanseuk came to work his magic on our large gable-end wall this week (the 10 year old K Render was an eyesore, streaked with multicoloured lichen and algae) - what a transformation! It is now pristine and looking like new! He then tackled our neglected roof tiles, filthy with years of dirt and covered with mossy bits, plus a spotty multitude of white lichen blobs! That is now also beautifully restored and good as new - plus our gutters are sparkling too! Both the walls and roof were then treated with 'Softwash' - a mild biocide - which will ensure that the great results will last a few years to come. Peter and his assistants worked impressively hard throughout and also cleaned up fully upon completion - our patio, paths, driveway, windows and drains have all been left far better than they've been for ages! Communication with Peter has been excellent from start to finish, via frequent texts - from the initial quote, through all the work involved, to the final clean-up and payment (which was definitely value for money!) Please see the before and after photos and judge for yourselves - it's been a great investment in caring for our home! It has been a pleasure having Peter and his team working on our premises and we would not hesitate in recommending them 100%.”
“Had my k rend walls and garage cleaned and could not be happier with the results. All come up like new and the stone copings look great again. Professional service and highly recommended.”
“My house is Victorian with a complicated roof structure.Peter managed to reach every nook and cranny to remove the moss which had badly accumulated on the North elevation of the building.The final result is impressive and I am sure will have added to the value of the house when we come to downsize next year. A difficult job well done.Thanks”
You should not. High pressure blasts the surface off render and forces water behind it. We only use low-pressure soft washing with a biocide, which cleans without damage.
Typically two to three years before any growth starts to show again, longer on sunny elevations. Regular re-treatment keeps it clean indefinitely.
We protect and pre-wet plants and lawns before treatment and rinse them afterwards. The products we use are applied at low pressure and controlled carefully.
Yes. Painted and smooth render is cleaned the same way, with a gentle soft wash that does not strip the paint.
It depends on the wall area and the level of staining. Send photos and your postcode and we will give you a fixed quote, usually the same day.
Moss removal, soft washing and a biocide treatment with a 2-year no-moss guarantee.
Learn more about roof cleaning →Block paving, tarmac, concrete and Indian stone restored, re-sanded and sealed.
Learn more about driveway & patio cleaning →High-reach vacuum clearing with a camera check, no ladders on your walls.
Learn more about gutter cleaning →Streak-free pure-water pole cleaning for homes and businesses.
Learn more about window cleaning →Pure-water cleaning that restores output and protects your warranty.
Learn more about solar panel cleaning →Roofs, driveways, patios and render cleared of moss, then treated so it stays off.
Learn more about moss removal →High-pressure cleaning for patios, paths, walls and hard surfaces.
Learn more about jet washing →Safe removal of dirt, carbon and algae from brickwork and stone.
Learn more about brick & stone cleaning →Cladding, car parks, offices, warehouses and retail, fully insured with RAMS.
Learn more about commercial cleaning →Tell us what needs cleaning and your postcode. Fixed quote, usually the same day, no hidden fees.