Render & Wall
Softwashing
Transform dirty, stained render and walls with our gentle,
biocidal softwashing system. Removes red stains, algae,
and biological growth from K-Rend, pebbledash, brick, and
stone. 20+ years of expertise across Newtownabbey &
Belfast. 24hr response time.
What Is Render Softwashing?
Softwashing is a gentle, low-pressure cleaning method that uses specialist biocidal solutions to kill algae, moss, lichen, and mold at the root. Unlike harsh pressure washing that can damage delicate render surfaces, softwashing restores your walls safely and effectively—removing stubborn red stains, green algae, and black mold.
Our professional-grade softwash system treats the biological growth causing those unsightly red stains, green and black marks on your render, K-Rend, pebbledash, brick, or stone walls. We work with premium brands including Stow and Parex renders, as well as all other major render systems. The treatment continues working for months after application, inhibiting regrowth far longer than pressure washing alone.
- Safe for all render types: K-Rend, Weber, Stow, Parex, pebbledash, painted surfaces
- Removes red stains: Specialist treatment for stubborn biological discoloration
- Long-lasting results: Treatment continues working for 3-5 years
- No damage guarantee: Low pressure protects your render finish
Why Softwashing Beats Pressure Washing
property owners and building professionals across Northern Ireland.
No Surface Damage
High-pressure washing can erode render, damage pointing, and force water into walls. Our gentle softwash protects your property investment while delivering superior cleaning.
Kills Growth at Source
Pressure washing only removes surface contamination. Our biocidal treatment kills algae, mold, and lichen at the root, preventing rapid regrowth and keeping walls cleaner for longer.
Cost-Effective
With results lasting 3-5 years instead of 6-12 months with pressure washing, softwashing saves you money long-term through significantly less frequent cleaning requirements.
Ready to Restore Your Render?
Newtownabbey & Belfast.
Frequently Asked Questions
Everything you need to know about render and wall softwashing
We can safely softwash all render types including K-Rend, Monocouche, Weber, pebble dash, painted render, brick, stone, and cladding. Our biocidal treatment is pH-neutral and safe for even the most delicate finishes while being tough on biological growth.
Typically 3-5 years, significantly longer than pressure washing (6-12 months). The biocidal treatment continues working after application, killing algae spores and preventing regrowth. North-facing walls or shaded areas may need more frequent treatment due to moisture retention.
Yes, when applied by trained professionals. We pre-soak plants, cover delicate vegetation, and rinse thoroughly after treatment. Our biodegradable solutions break down naturally and won't harm your garden when used correctly. We have 20+ years experience protecting properties.
Green staining is algae (often Gloeocapsa magma), red or orange stains are caused by Trentepohlia algae, while black marks are usually lichen or mold. Red algae particularly thrives on render surfaces in damp conditions and can be especially stubborn. These biological organisms thrive in Northern Ireland's damp climate, especially on north-facing walls. They're not just cosmetic – they can trap moisture against render, potentially causing long-term damage. Softwashing eliminates them safely.
No. Softwashing uses low pressure (under 100 PSI vs 3000+ PSI for pressure washing), making it completely safe for K-Rend, pebble dash, and other textured renders. High-pressure washing can erode surfaces, damage silicone finishes, and force water behind render – softwashing avoids all these risks.
Costs vary based on property size, contamination level, and access. A typical 3-bed semi-detached house starts from £200-400. We provide free, no-obligation quotes with transparent pricing. Call 07969 420161 for an accurate quote for your property.
We can clean painted render without removing the paint. However, if paint is already flaking or failing, cleaning may expose underlying issues. We'll assess your render during quotation and advise if repainting is recommended after cleaning for best long-term results.
Yes, we have extensive experience with commercial properties, apartment blocks, and large residential developments across Belfast and Newtownabbey. We hold full public liability insurance and can provide risk assessments and method statements for commercial clients.
A typical house takes 3-6 hours depending on size and contamination severity. We apply the treatment, allow dwell time for the biocide to work, then rinse. Some staining may take 2-4 weeks to fully disappear as the treatment continues killing algae after we leave.
Based in Mallusk, we serve all of Newtownabbey, Belfast, Antrim, Carrickfergus, Lisburn, Ballymena, and surrounding areas across Northern Ireland. We're happy to quote for properties further afield – contact us to discuss your location.
Yes! The red or orange staining often seen on render is caused by algae (Trentepohlia). Our biocidal softwash treatment effectively kills and removes this algae, restoring your render to its original color. Results typically show within 2-4 weeks as the dead algae washes away naturally.
Not necessarily. For external wall cleaning, we often work without homeowners present, as long as we have access to an outside water tap. We'll confirm requirements when booking. Many customers prefer to watch the transformation though – it's quite dramatic!
Complete Your Exterior Transformation
Pair render softwashing with our other professional services for a complete property makeover