Section J Report

Understanding the Section J Report

Navigating the complexities of Section J of the NCC can be a significant challenge. This part of the code outlines the minimum energy efficiency standards required for all Class 2 to 9 buildings, essentially covering all non-residential and multi-residential constructions. A certified Section J Report is not just a recommendation, it’s a mandatory document required to obtain a Building Permit.

The purpose of this report is to formally assess the proposed building’s design against a set of minimum performance requirements. It serves as verified proof for your building certifier that every relevant aspect of the structure has been designed to minimise energy consumption and reduce greenhouse gas emissions, aligning with national sustainability goals.

Our Comprehensive Assessment Process

To prepare a robust Section J Report, Energy Assess thoroughly reviews every aspect of your building’s design. Our holistic approach ensures that no detail is overlooked, identifying the most practical and economical pathways to compliance.

Our assessment covers all relevant parts of NCC Section J, including:

• Building Fabric: We analyse the thermal performance of the building’s shell, including roofs, walls, floors, and insulation. Our goal is to create a tightly sealed envelope that minimises heat loss and gain.
• Glazing: We evaluate the performance of windows and skylights, considering their size, orientation, U-values, and Solar Heat Gain Coefficients (SHGC) to balance natural light with thermal efficiency.
• Artificial Lighting: Our team will energy assess the proposed lighting systems to ensure they meet power density allowances and incorporate efficient control systems like motion sensors or timers.
• Heating, Ventilation, and Air Conditioning: We review the proposed HVAC systems to confirm they are appropriately sized and meet the minimum energy efficiency performance standards.

Navigating Compliance Pathways

Section J offers two primary methods for demonstrating compliance. Our experts will guide you on the most suitable approach for your specific project.

Deemed-to-Satisfy (DTS): This is a prescriptive, checklist-style pathway. The DTS method is ideal for more standard building designs, providing a straightforward approach where each element must meet a specific, predetermined benchmark. Our team ensures every component of your design ticks the right boxes for a clear and efficient DTS-based Section J Report.

JV3 Verification Method: For more complex or innovative designs, the JV3 method offers greater flexibility. This performance-based pathway allows for trade-offs between different building elements. For example, higher-performance glazing might compensate for a larger window area. A JV3 assessment involves sophisticated thermal modelling to demonstrate that the proposed building’s overall energy consumption is equal to or less than a comparable DTS-compliant building. This route can often unlock more creative designs and cost-effective solutions.