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I don't think you can assume 1920s means cavity insulation, ours is 1925 and solid wall.
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My 1930 house is solid wall. I'd assume anything is solid wall until there is something specific that suggests otherwise.
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but are there any other pitfalls to consider in terms of causes of damp?
The full-render? 😬
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All of the other houses on the street are a similar style, and have stretcher bond walls (where they are not rendered down to the ground) - that suggests most likely cavity.
The render can be covering up all sorts of problems though.
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A look at the brick bond if exposed will tell you, if you see the end of the brick between stretchers then it’s solid and will be 9in or thereabouts when you look at the depth of the wall in the window reveals.
If you see whole bricks then there is likely a cavity plus the walls will be thicker. -
relatively minor point; it looks like the whole of the front roof of that house and the neighbours runs into a single gutter run which has a downpipe on "your" side.
it's highly likely that this will exceed capacity in heavy rain and result in spillage out of the left hand corner.
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Another slightly related question. I'd sworn off old houses but it's the only one we've seen that seems to fit the bill in every other way. It's 1920s which I think means it should have a cavity wall. Are houses of this age less fussy about breathability than solid wall construction/Victorian? I'm thinking if we need to skim, or replace render, can it be gypsum/cement without a huge risk of causing issues?
I don't think it's had cavity wall insulation, but are there any other pitfalls to consider in terms of causes of damp?
This is the facade if it says anything.
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