Early eighties build, inner leaf and inner wall blocks a sort of blue/grey slate colour, not aerated thermalite type (a similar size though). Whilst they're not as hard as modern concrete blocks, they're still quite dense, and they have inclusions, sometimes white, other colours too. What are they?
I've been mistakenly referring to them as concrete blocks.
Please put me straight.
I've been mistakenly referring to them as concrete blocks.
Please put me straight.