Are bims stones and grid bricks a good choice in 60s construction?

Hello forum,

I want to buy a condominium in a multi-family house. The apartment is on the ground floor (raised ground floor) and according to the building description, the exterior walls and load-bearing interior walls of the ground floor are made of pumice stone and lattice bricks.

Can you answer the following questions for me?

1. Do pumice stone and lattice bricks have any particularly positive or negative properties compared to other construction methods from the 1960s?

2. Are the lattice bricks more likely to be on the inside or outside? (the house is plastered, so I can't easily see). I ask because I personally don't like pumice stone on the inside very much regarding drilling holes and hanging things.

If it should be relevant: the basement has concrete walls, and the upper floors only pumice stones (1st floor 30cm, 2nd+3rd floors 24cm) and apartment partition walls are made of solid pumice stones.

Best regards Torsten

1. Does pumice stone and lattice bricks have any particularly positive or negative properties compared to other construction methods from the 1960s?

True to the motto "they have an awful Lot of Coffee in Brazil," most buildings in the Neuwied basin and the Pellenz are built from pumice, and I have lived in one happily for a long time. The properties are similar to those of expanded clay.

2. Are the lattice bricks more likely to be on the inside or outside? (the house is plastered, so I can't simply see it). I ask because personally I don’t like pumice stone on the inside regarding drilling holes and hanging things.

You will misinterpret that. Also see ...

If it should be relevant: The basement has concrete walls, and the upper floors only pumice stones (1st floor 30 cm, 2nd + 3rd floors 24 cm) and apartment partition walls are made of solid pumice stones.

... here it is hardly to be assumed that there are two-shell exterior walls, but rather exterior walls monolithic in pumice, and interior walls in bricks. But overall we have already come to the conclusion that you better keep searching.