I have bought bungalow which was built in 1954 -The air bricks are concreted over- the previous owner stated this was done when it was cavity wall insulated approx 20yrs ago -
the surveyors report said they needed opening up to provide sub floor ventilation - I have drilled the holes out but it appears there is no air brick or opening in the inside cavity wall ? was it normal in the 1954 not to have "through " under floor ventilation , I am considering just smashing through the internal cavity wall to provide an air flow - any views please ?
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