this post was submitted on 09 Sep 2023
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I'm genuinely curious. I am in the southern US, Alabama specifically with the heat and humidity that entails. There are cinder block homes here, but they're mostly looked down upon and almost always have mold and mildew problems. How is that handled with brick and mortar or concrete construction?
Double walls, with thermal insulation, external vapor barrier and built in ventilation ducts. Special additives for the mortars prevent moisture from seeping into the walls. Double or even triple pane windows and good quality, properly applied exterior paint reinforces the insulation.
Most of the ones I've seen don't have most of, or any of this. I'd suspect that's the problem.
I'll risk the ones you're used to see are single wall, probably bare block and perhaps poorly cobbled together, as if they were sheds or something alike.
Far off the mark?
Not too far off of it.
I don't see why brick and mortar houses should be extra susceptible to those problems if build well. But of course Europe didn't use to see the same extremes of heat and humidity as the US does, perhaps it will become a problem in the future.
You got it right I suspect. Most of these that I've seen are a single course of blocks with no discernible vapor barrier or anything. And maybe a thin layer of paint.