- Lancashire’s exterior cleaning specialists
Over time, exterior render is subjected to continuous weathering, leaving it vulnerable to stubborn red and green algae streaks, atmospheric pollution, and deep-seated grime that can drastically age your property. Because modern and traditional render systems vary significantly in strength and porosity, a generic cleaning method can easily cause pitting or surface damage. Restoring tired-looking walls requires a specialized, gentle soft-wash approach tailored precisely to your property’s specific render type. By applying carefully formulated, low-pressure biocide treatments, we safely neutralize organic growth at the root and lift years of staining without aggressive scraping or high-pressure erosion—leaving your building’s exterior looking bright, uniform, and immaculately refreshed.
Render provides your home with a clean, distinctive architectural finish, but persistent damp conditions and airborne spores provide an ideal breeding ground for unsightly red and green algae, black mould, and stubborn atmospheric staining. Left unaddressed, these biological growths not only compromise your property’s kerb appeal but can slowly degrade the surface coating itself.
Because different render systems—from traditional sand-and-cement to modern through-coloured silicone finishes—vary greatly in composition and porosity, they demand a bespoke restoration strategy rather than a harsh, one-size-fits-all cleaning routine. Our meticulous process begins with a careful assessment of your render type and the specific nature of the staining. We then apply specialized, low-pressure soft-wash treatments that safely eradicate organic growth at the root, lifting years of discoloration without risking pitting, cracking, or surface erosion.
Material and condition guide the right approach.
Green, red or dark staining can have different causes. Identifying the growth and finish helps determine an appropriate treatment.
Traditional and modern render systems have different requirements. Tell us the type if known, plus any coatings or previous treatments.
Shaded elevations and exposed walls may weather differently. Describe the affected areas and any concerns around windows, plants or access.
Great results begin long before any cleaning equipment is started. Our process relies on thoughtful preparation, taking the time to inspect surface materials, check structural integrity, and identify specific types of organic growth before deciding on a strategy. By masking delicate fixtures, establishing clear safety protocols, and selecting the exact chemical dilution or pressure level required for the job, we protect your property while setting the stage for a smooth, damage-free restoration.
Combining the right approach with specialized low-pressure soft-washing and rotary surface cleaners allows us to lift years of embedded dirt, moss, and algae without risking surface erosion or water ingress. Every roof, render panel, and stone elevation is treated with the care it deserves, ensuring the underlying structure is preserved. We take genuine pride in the finish, carrying out thorough post-rinses, clearing surrounding gutters and pathways, and conducting final quality checks so your property is left looking pristine, refreshed, and fully protected for the long term.
Your property, your priorities. Understanding what matters to you is where a good clean begins.
Material, condition, access and drainage all matter. Different surfaces need different care.
The method should suit the surface — not the other way around. Care comes before pressure.
From the entrance to the roofline, the details make the difference to a well-presented property.
Streaks of red algae ran down the front of this detached home, making a fairly new house look decades old.
Mention cracks, flaking finishes and known render specifications. Photographs from ground level help show the extent of staining. Discuss protection for windows, plants and nearby surfaces before work.
The right advice starts with knowing your property.
Algae and other organic growth can cause discolouration, especially where walls stay damp or shaded. Some staining has other causes, so assessment matters before choosing a treatment.
Aggressive pressure can damage some finishes. Render needs a cleaning approach suited to its specification and condition, which may involve a gentler treatment rather than a high-pressure wash.
Every property is different, so prices depend on the size of the area, its condition and access. Quotations are free and no-obligation — call or text 07597 443500 or send an enquiry with a few photos.
Most domestic jobs are completed within a day. Larger areas, heavy build-up or commercial sites can take longer, and we will give you an idea of timings when we quote.
An outdoor tap is helpful for many jobs. We will confirm exactly what is needed — and whether we bring our own supply — when the work is booked.
We cover homes and businesses across Lancashire, including Preston, Chorley, Leyland, Blackburn, Burnley, Lancaster and surrounding towns. Include your postcode in your enquiry.
Some cleaning and treatments need dry conditions to work well. If the weather is unsuitable we will get in touch to arrange a new date.
Combine your questions into one enquiry and tell us about the other surfaces you would like cleaned.
Tell us what needs a refresh, or get in touch directly.
Call, text or email us directly — free, no-obligation quotations across Lancashire.
01257 650122
info@lancashireexteriorcleaning.co.uk
Homes & businesses across Lancashire
Free & no obligation
