Waterproofing Repairs and Maintenance
Waterproofing repairs and maintenance are critical to ensuring your building envelope remains watertight, compliant, and structurally sound. Over time, membranes deteriorate, sealants fail, and minor defects can quickly escalate into major water ingress issues if left untreated.
At Gunac | Waterproofing Specialists, we provide specialist waterproofing repair and maintenance solutions across New Zealand. Our experienced technicians assess, diagnose, and remediate membrane failures with precision, ensuring long-term performance and minimal disruption.
Why Waterproofing Maintenance Matters
Your property is a significant financial asset. Whether it is a residential dwelling, commercial facility, apartment complex, or high-rise structure, maintaining its waterproofing systems is essential to:
Prevent structural damage caused by moisture ingress
Protect internal finishes and tenant spaces
Avoid costly reactive repairs
Extend the lifespan of existing membrane systems
Maintain manufacturer warranties and compliance
Proactive maintenance is always more cost-effective than emergency remediation.
Our Waterproofing Repair & Maintenance Services
We deliver tailored solutions designed to restore integrity and extend system performance.
External Coating & Protective Systems
Specialised coating applications to protect:
Concrete substrates
Metal roofing and flashings
Wallboard cladding systems
Timber structures
Roof and deck areas
Our coatings are specified to suit environmental exposure and substrate conditions, ensuring durability and compliance.
Water Ingress Investigation & Remediation
We identify the root cause of leaks, not just the symptoms. Our structured assessment process allows us to provide long-term, technically sound repair strategies.
Membrane Repairs
Liquid membrane reinstatement
Sheet membrane patch repairs
Seam and joint remediation
Penetration detailing upgrades
Planned Maintenance Programmes
We develop maintenance plans and detailed proposals aligned to your building’s lifecycle requirements. Scheduled inspections and condition reporting help prevent unexpected failures.
End-to-End Project Control
Gunac manages all aspects of waterproofing repair works, from quotation through to delivery. Where required, we coordinate with a trusted network of associated trades, including:
Licensed builders
Plumbers
Plasterers
Electricians
Metal fabricators
Window and joinery contractors
This integrated approach ensures efficiency, quality assurance, and value protection for your property.
Specialist Waterproofing Expertise
As part of the Access group, Gunac operates with strict safety protocols and quality standards, delivering reliable waterproofing repair solutions across commercial, education, government, and residential sectors.
If you are experiencing leaks, membrane deterioration, or require a structured maintenance programme, engage Gunac | Waterproofing Specialists to protect your asset with confidence.
Book a waterproofing inspection today and secure the long-term performance of your building.
Get In Touch With Our Team
As a client, you will be satisfied knowing your project will be led and completed by a qualified and certified team. Our team include Project Managers and Quantity Surveyors who bring international experience to offer solutions for you.