Commercial Roof Waterproofing Service

Liquid Seamless & TPO Membrane Waterproofing for Commercial Roofs
Commercial roofs carry constant stress from weather, building movement, and temperature swings. Our liquid seamless and TPO membrane systems form a continuous, flexible barrier that removes weak points at joins and seams, reducing the risk of leaks and structural damage.We apply the Acryltek liquid seamless membrane coatings with our dual-pump airless sprayer with in-line heater units for precise flow, uniform coverage and rapid curing. This approach suits flat, sloped, and curved roofs and delivers a seamless finish that protects against moisture and extends roof life.We also supply and install premium TPO sheet membranes for robust, long-lasting waterproofing on commercial roofs. Heat-welded for seam-free performance, TPO excels in NZ’s harsh UV and wind loads, offering energy-efficient reflectivity and easy maintenance. Ideal for warehouses, factories, and large-scale refurbs—backed by our nationwide expertise and up to 20-year warranties.
Key Features of Our Systems
- Durability and Flexibility: Designed to handle New Zealand’s changing climate, including seismic movement, without cracking or failure.
- Energy Efficiency: Reflective coatings reduce heat absorption, helping to lower cooling costs in temperature-controlled facilities.
- Custom Solutions: Compatible with concrete, metal, and insulated substrates, with options for UV resistance, chemical protection, and anti-slip finishes.
Coolstores and Industrial Facilities
Coolstores and industrial sites face unique challenges such as condensation, exposure to refrigerants, and wide temperature fluctuations. Traditional membranes often struggle in these conditions, leading to premature wear or leaks.
Our Acryltek liquid seamless membrane coatings are designed to seal against moisture ingress while still allowing controlled vapour permeability, preventing humidity from becoming trapped within the structure. These systems are also compatible with passive fire protection measures, ensuring compliance with New Zealand Building Code Clauses B2 (Durability) and E2 (External Moisture).
We have completed projects ranging from large refrigeration plants in Canterbury to high-voltage substations and warehouses nationwide.. Whether the roof is flat, curved, or sloped, we deliver a durable solution that extends asset life and reduces maintenance costs.
Why Choose TekSeal for Commercial Roof Waterproofing
Sustainability is also part of our approach, with low-VOC products that support environmentally responsible construction. From our Christchurch base, we manage projects across the country, completing work on time and within budget while keeping disruption to a minimum.
FAQs About Commercial Roof Waterproofing
What types of commercial roofs do you work on?
We waterproof flat, sloped, and curved roofs across coolstores, warehouses, substations, and other industrial facilities.
How do seamless membranes benefit coolstores?
They prevent moisture buildup, improve insulation, and resist chemical exposure from refrigerants, helping reduce energy costs and extend roof life.
Is your work compliant with NZ standards?
Yes. All installations meet Building Code requirements, including Clauses B2 (Durability) and E2 (External Moisture), with certified documentation supplied.
How long does installation take?
Timeframes vary with scale, but our spray-applied systems allow for rapid turnaround. Many projects are completed within 7–12 days, minimising downtime.
Get in Touch
Protect your commercial investment with a waterproofing solution designed for New Zealand conditions. Whether you’re planning a new build, dealing with an existing leak, or looking to upgrade your roof system, we deliver tailored solutions that last.
Ready to secure your facility? Contact TekSeal today for expert advice and a no-obligation consultation. Our team is standing by to discuss your specific requirements and provide a detailed quote.






