Roof Cleaning
Belfast
Professional Roof Moss Removal & Soft Wash Services Across Northern Ireland
Roof Cleaning by DPMNI
Is your roof looking tired, moss-covered, or discoloured? At Diamond Property Maintenance (DPMNI), we provide trusted, effective, and affordable roof cleaning in Belfast and across Northern Ireland. With years of experience in soft washing and moss removal, we’ll help you restore the appearance of your roof, prevent long-term damage, and improve your home’s kerb appeal.
Trusted by Homeowners, Landlords & Businesses
Why Roof Cleaning Matters
Over time, roofs in Belfast and throughout NI are exposed to damp weather, airborne pollutants, algae, moss, and lichen. These build-ups don’t just look unsightly — they can actually shorten the lifespan of your roof by trapping moisture, weakening tiles, and blocking gutters.
Our professional roof cleaning service is designed to:
Safely remove moss, algae, and stains
Extend the life of your roof tiles or slates
Prevent blocked gutters and drainage issues
Improve energy efficiency by reducing trapped moisture
Restore the natural colour and texture of your roofing
Whether you have a tiled roof, slate, concrete, or even metal, our team knows the safest method to clean it — without damage or harsh pressure.
Our Roof Cleaning Services
We tailor our roof cleaning solutions to your roof type and condition. Our typical roof cleaning process includes:
What Makes Our Roof Cleaning Safe?
We never use high-pressure washing directly on roofs — doing so can damage tiles, strip protective coatings, and lead to leaks. Instead, we use:
You get peace of mind knowing the job is done safely, thoroughly, and with full protection of your property.
Frequently Asked Questions
Most homes in Northern Ireland benefit from a professional roof clean every 3 to 5 years, depending on moss levels and exposure.
Yes. Soft washing is safe for tile, slate, and even older roofs when done correctly by a trained team using the right detergents.
No. We avoid harsh jet washing and use soft brushing and specialist products to ensure your tiles remain fully intact and undamaged.
We use a mix of ladders, scaffold towers, and extendable poles depending on your property. In many cases, no heavy access equipment is needed.
Our biocide roof treatment continues working for months after application and can prevent moss regrowth for 1–3 years depending on location.
Absolutely. A clean, stain-free roof makes a great first impression and shows buyers the home is well cared for.
Yes, we offer flexible appointments including weekends to minimise disruption.
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 Free Roof Cleaning Quote Today
Call 028 9560 6799 or email info@dpmni.co.uk to schedule your free roof survey.
Or click below to request a callback:
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.