Knauf Insulation announced the launch of their new H1 Calculator earlier this year, a free online tool designed to make H1 Building Code compliance faster and more straightforward.
The release comes at a critical time for the industry. By December 2025, the familiar Schedule Method will be removed, leaving the Calculation Method and Modeling Methods as the only accepted routes to compliance. This change is intended to lift building performance standards and bring more accuracy into energy efficiency calculations. For the trade, however, it means that traditional shortcuts will no longer be available, and more detailed data will need to be provided at design and consent stages.
Knauf Insulation’s H1 Calculator has been developed for the Calculation Method to meet this shift head-on. Tailored specifically for New Zealand conditions, it provides an easy way for builders, architects and specifiers to carry out the necessary thermal calculations without having to rely on complex spreadsheets or lengthy manual processes. The calculator is free to use, quick to learn, and designed to reduce the risk of errors that can delay building consents.
By streamlining the process, the H1 Calculator not only saves time but also gives builders greater confidence that their projects will meet the tougher standards councils expect. For architects and specifiers, it means less back and forth on compliance paperwork and more time spent on design outcomes. Knauf Insulation says the tool has been built with industry feedback in mind, focusing on practical usability and clarity rather than technical jargon.
The calculator is backed with step-by-step guidance, support resources and technical information to help users get up to speed well before the new rules take effect. Knauf Insulation has positioned the tool as part of its wider commitment to supporting the industry through regulatory change and ensuring compliance is as practical and accessible as possible.
More information and access to the calculator: https://knauf.com/en-NZ/knauf-insulation/h1
