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Restore the crisp, vibrant appearance of your building’s exterior walls with premium render cleaning from A Bligh Exterior Cleaning Ltd. Serving domestic and commercial properties across Portsmouth, our certified soft-washing specialists safely remove red algae, green slime, and dark atmospheric staining without risking structural damage.
We’ll respond within a few hours.
£5m public liability cover for total peace of mind.
Safe, biodegradable methods that protect your property.
IPAF, PASMA & City & Guilds trained professionals.
Turn up on time, every time — that's our promise.
Modern through-coloured renders such as K-Rend, Monocouche, Weber, and Sto provide a beautiful, low-maintenance finish for contemporary homes and commercial properties. However, due to their porous nature and the damp, coastal climate of Portsmouth, these surfaces are highly susceptible to biological colonization. Microscopic spores of green and red algae (Trentepohlia), black mould, and atmospheric carbon staining naturally anchor themselves deep within the texture of the render. This biological growth doesn’t just create unsightly, dirty streaks across your property’s facade; it actively feeds on the moisture trapped within the walls, gradually breaking down the render’s structural matrix and causing micro-cracks over time.
When your building’s render begins to break out in vivid red, green, or black stains, it instantly ages the property and dramatically slashes its market value.
Porous render acts like a sponge for damp air, creating a perfect environment for aggressive red and green algae to bleed down your walls from the roofline. Our targeted soft-wash treatments completely sanitize these surfaces, chemically destroying the living spores so they cannot instantly return.
Standard pressure washers are far too powerful for modern render facades, frequently cutting deep, permanent gouges into the wall finish or causing the render to crack and peel. Our certified, low-pressure approach guarantees a flawless clean with absolutely zero risk of physical surface damage.
Many property owners mistakenly assume that stained render requires an expensive repaint, which can cost thousands of pounds and ruin the render’s natural breathability. Our professional soft-wash restoration achieves a like-new finish at a fraction of the cost, maintaining the original building design.
At A Bligh Exterior Cleaning Ltd, our mission is to provide top-tier exterior cleaning services that enhance the beauty and value of properties in Portsmouth. We’re committed to exceptional results with every job — using eco-friendly, safe methods that protect both your property and the environment.
Years of trusted service in Hampshire
When you hire A Bligh, you’re getting more than a clean — you’re getting a team that treats your property like their own.
Born and based in Portsmouth — we know the local properties, weather and challenges inside out.
Pure-water systems for glass, soft-wash for delicate surfaces, and high-pressure for hard stone.
PureSeal approved applicator plus IPAF, PASMA and City & Guilds certifications.
No hidden charges. What we quote is what you pay — every single time.
Have a question about our professional cleaning services? Below, we have compiled answers to the most common queries we receive from homeowners and businesses across Portsmouth.
High-pressure washing is far too aggressive for materials like K-Rend or Monocouche. It can physically scar the texture, strip away the color, and blast water straight into micro-cracks, causing the render to blow or separate from the wall. We use low-pressure soft-washing, which relies on safe chemicals rather than raw water force to clean the surface.
Those colorful streaks are caused by airborne organic spores, predominantly red algae (Trentepohlia) and green algae, which thrive on damp, porous exterior surfaces. They are particularly common on building elevations that face away from direct sunlight or sit underneath overhanging trees and leaking gutters.
Because our PureSeal treatments don’t just rinse off surface dirt but actively kill the microscopic root systems embedded within the render, your walls will typically stay clean for up to 3 to 5 years. The treatment also leaves behind a residual barrier that severely retards the return of future spore growth.
Yes, we are fully equipped for high-reach operations. Our team holds valid IPAF and PASMA certifications, which means we are fully licensed to operate mobile access towers and cherry pickers safely. We can wash high-level commercial or residential facades across Portsmouth up to several storeys high in full compliance with safety regulations.
Yes, absolutely. We only use premium, government-approved exterior cleaning solutions that are completely biodegradable. Before we begin spraying, we thoroughly saturate all nearby lawns, flowerbeds, and shrubs with fresh water, and continue rinsing during the process to ensure your garden remains perfectly safe and unaffected.
