Celebrating
30+ Years
- Est. 1995
Mould on exterior surfaces is more than a cosmetic issue. It can damage materials, create slip hazards, and affect the air quality around your building.
AR Plus offers safe and effective exterior mould removal and treatment throughout the Bay of Plenty, Waikato, Rotorua, Taupō, Gisborne, and the Coromandel.
Whether it’s clinging to cladding, growing around subfloor areas, or building up on shaded exterior walls, we’ll identify the source, treat it properly, and help prevent it from coming back.
If you’re unsure what’s growing on your building, we can assess it and recommend the right solution, including sampling and testing if needed.
Our exterior mould removal services cover a wide range of materials and environments.
We work with a wide range of clients who need safe and effective exterior mould removal and remediation. Whether it’s a single dwelling or a large-scale apartment complex, we have the experience and capacity to deliver high-quality results. Our team regularly supports property managers, developers, and facilities teams with practical solutions that minimise disruption and meet compliance standards.
Body corporates and property managers managing unit blocks and shared outdoor spaces
Homeowners and landlords maintaining the look and integrity of their properties
Schools, early learning centres, and aged care facilities responsible for clean, safe environments
Facility and maintenance teams seeking scheduled or reactive exterior treatment
Builders and contractors needing mould removal prior to repainting or recladding
Need us to work after hours or in stages to suit your site? We’re happy to fit in with your schedule.
Mould often returns after DIY attempts which also risk damaging surfaces. We tailor our approach to your specific material and environmental conditions, using low-toxic products and non-invasive techniques wherever possible.
Surface mould tends to return quickly if only cleaned or painted over. Our professional treatment addresses the root cause, helping to:
Remove stubborn biological growth at a spore level
Avoid damage to painted, plastered, or timber surfaces
Restore air flow and hygiene in external subfloor zones
Reduce the spread of spores into indoor areas
We follow a multi-stage process to ensure clean, long-lasting results.
We identify the extent of the mould and evaluate any contributing moisture sources.
If needed, we use low-pressure washing or physical methods to remove surface residue.
We use a targeted antimicrobial or biodegradable solution to break down and kill mould at its base.
We advise on drainage, structural or ventilation improvements to prevent regrowth.
Scheduled treatments may be advised for high-risk areas or shaded environments.
AR Plus operates with high standards of safety and compliance on every site. Learn more about our certifications and accreditations.
Systems and processes based on ANSI/IICRC S520 mould remediation guidelines
ACES-accredited technicians for proper treatment and risk management
Telarc-registered for Health & Safety (ISO 45001) and Environmental Management (ISO 14001)
Sitewise Gold (100%) and SHE pre-qualified contractor
Trained in the identification of potentially asbestos-containing exterior surfaces
Many older homes and buildings still have exterior materials that may contain asbestos, including Super Six roofing, fibre cement cladding, and Decramastic tiles. Cleaning these surfaces, especially with pressure washers or heavy scrubbing, can disturb asbestos and release dangerous fibres into the air or soil.
We work with certified third-party testers and can safely manage any cleaning, encapsulation, or removal where asbestos is confirmed.
If there’s any uncertainty about your exterior surfaces, do not attempt to clean them yourself. Let us check it for you before any work begins.
Exterior painting works best on clean, dry surfaces. Mould removal and cleaning is the ideal prep step for cladding, soffits, fences and trims.
Mould loves the indoors too. Find out why professional interior mould treatment is the best option for residential and commercial spaces.
Asbestos removal can only be performed by licensed professionals. If you suspect Asbestos, leave it to us.
No — this service is focused on mould. See our Moss & Lichen Treatment page for those services.
Yes, our mould treatment is safe for pets and plants. We use biodegradable treatments and take steps to protect surrounding areas during the application process.
We carry out mould testing and remediation across the central North Island, including Tauranga, Hamilton, Rotorua, Coromandel, Taupō, and Gisborne. If you're unsure, just get in touch; we’ll gladly advise you.
Need help with persistent mould on your exterior walls, subfloors, or outdoor structures? Get in touch with AR Plus to book a site visit and mould test.
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