- info@cleaning-service.uk.com
- SD Office, 491 Wight Moss Way, Southport PR8 4ZZ
Red stains on your render?
Red stains on k rend render, this is a type of Algae that grows within the render on buildings. These Algaes can damage the render on the building if left to their own devices.

Getting Rid of Red Stains on Render
These microorganisms grow by extracting the energy from sunlight and carbon dioxide from the atmosphere. In a damp environment, the formation of these microorganisms or biofilm as it is called really flourish.
The rendered surface of the building needs proper treatment from a render cleaning company.
Cleaning service ltd specialises in the treatment and cleaning of all types of rendered surfaces.
Here is a guide to the microorganisms that may destroy the render on the surface of these buildings.
Fungi: usually a black stain
The formation of Chemoorganotrophic fungi is generally seen on the stone crusts. By bio-corrosive activity or hypnal growth these types of fungi penetrate in the render.
This happens because of the excretion of organic acids and the oxidation of mineral forming cations like manganese or iron. It causes discoloration of stone surfaces and can leave “rust like stains” as well.
Algae and cyanobacteria:
These can grow on the stone surfaces and also penetrate in the stone system. Algae and cyanobacteria causes a lot of pigmentation which leaches into the substrate on which it is developing.
In cold temperature with high level of rainfall as well as humidity, the growth of algae in different species is found.
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Mosses:
Mosses are non vascular plants that need access to nutrients and good amount of moisture to develop.
They make use of sunlight to make food using photosynthesis.
On a rooftop where there is moist environment and is also shaded with the help of tress develops mosses.
These grow mostly in winter and in summers it dries out leaving stains of brown colour.
These add weight to the roof and it also falls down in gutters and pipes causing blockages.
Treatment of such types of contaminants and bacteria:
So, there are many more contaminants which can cause lot of damage, discoloration and stains to the render surfaces.
Cleaning service ltd applies a biocidal wash to get rid of them. The treatment plan may differ for each of these types.
The treatment with a bio-cide wash is certainly important but sometimes, the need to scrub and brush these kinds of microorganisms is crucial too.
Chris Spruce Cleaning Service ltd
SD Office, 491 Wight Moss Way, Southport PR84 ZZ
Phone: 0800 0933 267
Email: info@cleaning-service.uk.com
https://maps.app.goo.gl/9QPmRF5aX8pgREre8
What our Customers say
EXCELLENT Based on 105 reviews Daniel Anness2025-09-30Trustindex verifies that the original source of the review is Google. Chris did an outstanding job on our very tired and neglected garden. In one morning he transformed the place. I can't thank you enough. Very good service, punctual and polite. Thank you Chris, see you again soon! Karen Shackleton2025-08-26Trustindex verifies that the original source of the review is Google. Chris Spruce did a brilliant job cleaning the render on our house and the roof on our rental. He turned up on time, worked hard all day and left everything tidy. The render had gone black but now it looks as good as the day it was done. Really impressed and would definitely recommend him! CP2025-08-19Trustindex verifies that the original source of the review is Google. Chris is such a professional, with a great attention to detail. Our old imprinted concrete driveway has been meticulously cleaned, recoloured and then new resin applied. It looks fabulous. We are so pleased and have had so many people admiring the driveway. If you want a job done well, we highly recommend Chris. Mark Mitchyn2025-07-22Trustindex verifies that the original source of the review is Google. Exterior cleaning of render on my house . It came up beautifully some heavy smoke stains on chimney removed all stains gone . Looks excellent. I was advised how to care for render and also what to do to try and stop stains recurring in the future . Very useful advice received. A very knowledgeable and friendly team worked hard and cleaned up nicely after they finished. I would highly recommend Chris and his team. Anne Gent2025-07-01Trustindex verifies that the original source of the review is Google. Chris did an excellent job , the render looks like new. Really responsive and no fuss , kept in touch with me all through the process. 3 months on since I had the work done at it’s still looking really good. I will be using Chris again when I need any more work doing. Oke Akpogheneta2025-05-22Trustindex verifies that the original source of the review is Google. Chris is a lovely guy arrives on time does a fantastic job. Have used him a few times now and will continue to use him to maintain our house. Michael Barker2025-04-29Trustindex verifies that the original source of the review is Google. Fantastic job by Chris and his team as always. Well recommended. Steve Padden2025-04-24Trustindex verifies that the original source of the review is Google. Amazing job, exceeded expectations. All with the minimum of disruption. Very professional DAVID MURRAY2025-04-17Trustindex verifies that the original source of the review is Google. Excellent friendly service. Job done thoroughly and quickly. I would fully recommend this contractor. Lucy Fletcher2025-04-04Trustindex verifies that the original source of the review is Google. Chris has done an amazing job cleaning our resin driveway, it looks like new again. Chris also took the time to clean up our sandstone steps which must have had decades of grime. Fantastic job and Chris is a really lovely chap, friendly and hardworking and has given great advice for future maintenance. I would highly recommend him for any cleaning jobs.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Enquire about our Render Cleaning Service here
Most Black marks are Fungal this can be removed from the sand stones and other kinds of stones in residential as well as commercial areas.
The species are killed and depending on the weather the treatment is performed to give a beautiful new look to the buildings that are stain and bacteria free.
Apart from stains being an aesthetic issue—they can seriously impact your property’s structure. Fungi, algae, and moss trap moisture, which weakens the render and can lead to cracks or erosion over time.
Addressing these issues early helps protect your building’s exterior and keeps it looking its best.
Cleaning-service UK can remove red stains on render…if you have a problem with red stains on render call us today on 080000933267 for free advice
Connect with Chris Spruce
Meet the Founder: Committed to delivering exceptional results for every property in North-West!
– 20+ years of experience in exterior cleaning.
– Personally involved in every cleaning project to ensure 100% satisfaction.