I think it's cinderblock with coarse render on the inside and roughcast on the exterior. Exterior walls are about a foot thick, which would fit with concrete block construction. In the EU houses that go up for sale have to be advertised with an energy rating, and this one gets a D (the scale is A-G).

The loadbearing walls are too thick to be brick with a cavity imo, so I'm wondering if they could also be cinderblock and then some plaster.

The floors are mostly wood planking under carpet or lino. One room has oak herringbone parquet. The kitchen and entryway stairs have polished concrete while the ground floor landing is checkerboard crimson and ivory tiles.

I did some more reading about damp and now I think the first order of business would be re-opening the chimney stack which was sealed up. I wonder if closing it prevented some of the old school ventilation from working and helping ease any damp. There's also a gutter spout (shaped like a serpents face!) that's probably spitting water too close to the building. I'll wait for an inspector to say for sure what's going on, of course.

Inside the roof looks a little like this and this. This is the third one I've seen that's like this. It's just wood beams, some joists, and tile over that. A wooden plank floor with lino on top. Incredible!

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1983 300TD 240k Thistle Green Auto (Euro) [sold]
1984 300D 240k Petrol Green Auto
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