> For the complete documentation index, see [llms.txt](https://docs.betterbuilding.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.betterbuilding.io/user-guide/workflows/moisture.md). # Moisture ### Moisture Modelling on Better Building Moisture modelling, or hygrothermal modelling, is an advanced simulation method called Heat and Moisture Transfer (HAMT). The HAMT model takes into account various influential factors such as temperature gradients, humidity differentials, material properties, airflow patterns, and vapour pressure differentials. By incorporating these variables, the model accurately predicts the behaviour of heat and moisture transfer across different layers of a building assembly, including walls, roofs, floors, and insulation materials. Below and on the following pages is a step-by-step overview of the inputs required for our moisture simulations. All inputs are based on ASHRAE 160/ DA07, in line with National Construction Code 2022 requirements. These can also be used for New Zealand. A typical wall is modelled in less than 10 minutes, including simulations, results and reporting. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.betterbuilding.io/user-guide/workflows/moisture.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.