So while I merrily chamfer away to the sound of baby starlings cheeping in the roof ( the last brood all fell out and had to be rescued so here's hoping Mum has patched up the nest) Mike is building the walls. This is a wall. The theory is that they will be built in the shed, then erected around the existing building. The roof joists will then be hoisted into place with a little help from our friends (Mr McKerral's wood lorry) and then all my retarded planks will be whacked into place, covered with something waterproof, and the old roof will be removed.

That's the theory.