Floor and roof on my New Underground Bunker Tunnel Dave

In this video we insulate the floor and install underfloor heating. The beam and block roof then gets installed with some of the ventilation system
In the video I demonstrate the computer desk here is the links for that

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FlexiSpot E7plus standing desk: bit.ly/3CyC8zr (US) bit.ly/4ezuHoZ (CA)