How to build the floor of an extension; How to Build an Extension (8)

Homebuilding and Renovating, in association with Cemex, detail the process of building a single storey extension.
With Master Builder Andy Stevens we follow the build from beginning to completion, outlining all the major stages and techniques involved.
This is Part 8 - Creating the Floor Structure; including the damp course, creating hardcore, concrete oversite, insulation and timber floor frame.