The first fix for the underfloor heating is now underway in the two main rooms in the extension upstairs. The photo below is of the back bedroom above the garage, the insulation sheets have already been installed. With the trays arranged to slot between the joists.
Continuing into the front room, which will be the office eventually, the reflective panels are first installed, then the tubes to carry the hot water are laid out.
Another view showing the first fix heating installed in the extension. Also visible in the picture below are the first 24 runs of the Cat 5E data cable, Cat 6 is now readily available, but this cable was very reasonable from a cost perspective and should support Gigabit network speeds. The Electrician has agreed to install the cable runs, and I'll terminate them later.
The block work is still drying out, just shows how wet it all was last year. Roll on summer.