At JMF, we understand that compliance is non-negotiable. Our tested timber joinery suite has been developed specifically to meet the requirements of NZS 4211, ensuring performance, reliability, and peace of mind for specifiers, builders, and clients alike. Our installation details have also been tested to E2/VM1, giving you that extra level of assurance that you’re getting quality, high performing joinery every time.
All JMF products are part of a comprehensive, independently tested system. Our testing has been conducted by IANZ-accredited laboratories, and our joinery configurations have been verified to meet or exceed the performance requirements of NZS 4211 for air infiltration, water penetration, and structural integrity.
The installation of JMF joinery in various cladding scenarios has also been tested to E2/VM1. Allowing this verification method to be used to demonstrate compliance with the New Zealand Building Code.
To ensure your timber joinery meets Building Code compliance and is accepted without delays by Building Consent Authorities, follow these key steps when specifying JMF joinery:
Include NZS 4211 on your Plans
Clearly state on your drawings that all timber windows and doors are to be manufactured and installed in accordance with NZS 4211. This signals to the BCA that you are specifying joinery that has been tested to the required standard.
Specify JMF Joinery by Name
Ensure your documentation refers specifically to JMF joinery. This lets the consent authority know that the system you’re specifying is tested, proven, and fully compliant with NZS 4211.
Use JMF’s Online Details
Access our full suite of technical drawings, installation guides, and resources online. Incorporate these directly into your documentation to avoid inconsistencies and ensure alignment with a compliant system.
Engage a JMF Manufacturer Early
We strongly recommend involving a licensed JMF manufacturer early in the design process. They can help you identify any potential challenges early—such as span limitations, installation methods, or timber availability—before consent or fabrication.
Use the Engineering Calculator
For projects in very high wind zones, using wide spans, or with unique design requirements, use the JMF Engineering Calculator to confirm the timber species and sizes are structurally adequate and meet B1 compliance.
All JMF joinery must be manufactured by a licensed JMF manufacturer. These manufacturers are trained in the use of the system and have access to detailed technical manuals, installation guidelines, and engineering tools to ensure consistent and compliant fabrication and installation.
Always ensure you engage with an approved JMF manufacturer for your project, so you have peace of mind to know your joinery will not only fly through the Building Consent stage, but will also be consistently high quality workmanship, every time.
We offer an online calculator tool for custom wind zone, fixings, and mullion/jamb load analysis. This ensures joinery configurations meet the specific structural requirements of the building and location, including extra high wind zones or complex facade designs.
To assist with building consent applications and compliance documentation, JMF can provide:
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