Have spent the last week stripping off the rough cast from what will be the internal wall. What with loosing 25 mm to the insulation on the outside wall I recon to have stolen back 15mm or so in the render.

Being tight I didn't want to waste all these good chippings so I have thrown them in as trench back fill. I recon when  the type1 goes in it will all compact together.

First tool casualty! SDS drill began smoking and grinding! Alas it is no more! I paid £40 for it about 10 years ago so it owes nothing. The new one was £60 though! It will have to last 15 years!