Soft Washing
Belfast
Safe & Effective Cleaning for Render, Cladding, K-Rend & Delicate Surfaces Across Northern Ireland
Soft Washing by DPMNI
Does your property have unsightly staining on its render, walls, or cladding? At Diamond Property Maintenance (DPMNI), we specialise in gentle but powerful soft washing services in Belfast and across Northern Ireland. Ideal for delicate surfaces, soft washing uses low-pressure equipment and biodegradable cleaning solutions to remove algae, red/green staining, lichen, and organic growth—without damaging your building’s exterior.
Trusted by Homeowners, Landlords & Businesses
What Is Soft Washing?
Soft washing is a safe, chemical-assisted cleaning method designed for fragile exterior surfaces that can’t withstand high-pressure jet washing. It involves applying specialist biocides or detergents at low pressure to break down biological matter, followed by a gentle rinse.
This technique is particularly effective on:
Render (e.g., K-Rend, Weber, Parex)
Painted walls and pebble dashing
Cladding (PVC, metal, composite)
Roofs, conservatories, and soffits
Exterior timber, decking, and signage
Heritage buildings and delicate finishes
Unlike pressure washing, soft washing cleans deeply and thoroughly without abrasion—making it the go-to method for long-term surface care.
Our Soft Washing Process
Our Soft Washing Services
We tailor every job to your system’s layout, location, and material type.
Frequently Asked Questions
Soft washing uses low pressure and chemicals to remove organic stains. Pressure washing uses force to blast away dirt. Soft washing is safer for delicate surfaces like render, paint, and cladding.
Soft washing kills spores at the root, so results can last up to 2–3 years, especially when followed by a maintenance plan.
Yes — we use biodegradable, non-hazardous solutions. Plants are pre-wetted and protected. Pets should be kept indoors until the job is complete.
Many stains fade immediately. However, some discolouration (especially red algae or black lichen) will continue to lighten over 1–2 weeks after treatment.
Yes. We use long-reach poles and extension systems to clean up to 3–4 storeys from the ground. MEWPs are available for larger jobs.
Absolutely. We regularly soft wash for letting agents, housing associations, schools, offices, and retail buildings.
Six Reasons For People Choosing Us
Experienced Team
Our time-served tradesmen are PASMA and IPAF-trained professionals, ensuring safe and efficient service.
Comprehensive Insurance
We carry £10 million public liability insurance and specialized SSR insurance for your peace of mind.
Eco-Friendly Cleaning
We use child-safe, animal-safe, and plant-safe cleaning solutions to protect your environment.
Proven Track Record
With over 1,400 satisfied customers, we’re trusted by homeowners and businesses alike.
Tailored Solutions
Every job is unique, which is why we provide a free consultation and custom plans based on your needs.
Local Expertise
We understand the unique challenges in North Down and Antrim, tailoring our services to meet the specific needs of your area.
Ready to transform your property’s exterior?
Book a Soft Wash Today
Whether it’s green algae on your render or grime on your cladding, DPMNI’s soft washing service is the safest way to restore and protect your building.
Other Exterior Cleaning Services We Offer
We provide reliable, efficient, and environmentally conscious cleaning for residential, commercial, and agricultural clients.
RoofCleaning
Remove moss, algae, and dirt buildup safely with our specialist Roof Cleaning service. Our team uses non-damaging techniques to restore the appearance and extend the life of your roof.
Gutter & PVCCleaning
Prevent water damage and keep your roofline looking sharp with our Gutter and PVC Cleaning service. We clear gutters, clean downpipes, and brighten fascias, soffits, and cladding.
WindowCleaning
Enjoy crystal-clear, streak-free results with our Window Cleaning service. We handle interior and exterior glass for homes, offices, and retail units across NI.
DrivewayResealing
Our Driveway Resealing service revives the appearance of block paving, tarmac, and concrete driveways while protecting against weeds, oil stains, and UV fading.
PressureWashing
We use commercial-grade equipment to powerfully remove grime, algae, and organic growth on patios, walls, car parks, and more. See results fast with our Pressure Washing service.
Solar PanelCleaning
Maximise your solar efficiency with safe, scratch-free Solar Panel Cleaning. We use purified water and soft brushes to prevent limescale and streaks.
SoftWashing
Our chemical-based Soft Washing method gently treats render, cladding, and painted surfaces without damage. It’s ideal for delicate exteriors and heritage buildings.
Farm YardCleaning
We provide heavy-duty Farm Yard Cleaning for agricultural clients across Northern Ireland. From silage pits to slurry-covered concrete, we get the job done safely and effectively.
Property & FacilitiesManagement
Need more than just cleaning? Our Property & Facilities Management service offers ongoing external maintenance solutions for landlords, housing providers, and businesses.