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Combining technologies for better quality
Combining technologies for better quality
20 mm PIR Insulation – Slim, Versatile & High Performance
At CNZ Insulation, we are proud to offer a range of sizes from 20 mm up to 160mm PIR insulation boards – 20mm being the slimmest option in our PIR range.
Even at just 20 mm thick, PIR delivers a strong thermal performance, low water absorption, and excellent fire properties, making it a smart choice for situations where space is limited but insulation performance is still required.
Common Applications in New Zealand
- Thermal break behind cladding systems
- Continuous insulation layer in wall or roof assemblies where thickness is restricted
- Slab-edge insulation to reduce heat loss at foundations
- Ceilings or internal linings where every millimetre matters
- Renovation projects where adding bulk insulation isn’t practical
Key Benefits
- Tested to NZ standards
- Lightweight and easy to handle on-site
- Compatible with adhesives and mechanical fixings
- Available in custom lengths to suit project requirements
- Excellent thermal efficiency even at minimal thickness
Whether you are designing a rainscreen façade, insulating a tight roof cavity, or simply need a slimline solution for detailing, CNZ’s 20 mm PIR provides reliable performance without compromising on space.
Climate Zones
Previously New Zealand was divided into 3 climate zones - Zones 1 and 2 for most of the North Island and zone 3 for the South Island. Now, there are 6 climate zones across New Zealand, with the insulation requirements tied to these zones
Who is effected ?
The new H1 regulations only affects new construction and existing properties undergoing changes to the external thermal envelope, which will require building consent.
Two Sets Of Requirements
Minimum Insulation requirements differ across three types of buildings; Housing, Small Buildings-under 300m2 and Large Buildings- over 300m2
About Us
CNZ Insulation is a New Zealand owned supplier of PIR foam core panel products .
From the state-of-the-art manufacturing plant in Christchurch, we can manufacture a diverse range of PIR products from our production line, Including Slab edge , Thermal Break ,Tapered Boards along with custom profiled boards enabling significantly more flexibility in building design.
Quality and Durability
CNZ Insulation panels are tested to AS1366.2/ASTM 2498.3 standards from the highest quality materials, using state of the art production equipment to rigorous quality control standards, ensuring long term reliability and service life.
CNZ Insulation board delivers the highest thermal performance allowing homes and buildings to achieve premium levels of energy efficiency and with some of the thinnest possible solutions.
Certifications
Featured Products
CNZ Insulation
49 Hammersmith Drive, Wigram, Christchurch 8042
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