So we have started to lay the blocks around the perimeter of the building, and anticipate building up two courses all the way around in order to retain the concrete slab floor.

Had a bit of a nightmare with the blocks as the footings were not exactly level and I had to cut some blocks down to make up a level course, and these 7N dense concrete blocks are very, very heavy. That makes cutting them a bit of a nightmare and means the mortar has to be quite stiff otherwise the block just pushes the mortar out from under the block due to their extreme weight.

Walls starting to take shape

Once I’ve got the two courses up, it will be hardcore and sand next. That’s going to mean a hell of a lot of shovelling and wheelbarrow action, which I’m really not looking forward to.