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  • Other dumb things like filling wall cavities (30s housing) with spray insulation that then allows damp bridging, filling the roof void with spray on insulation that then prevents any form of maintenance, fitting external insulation that prevents brickwork from drying out.

    Could be a dumb question, but does rendering over brick front and back in a victorian terraced create that problem? Or is it about how and what rendering is done?

  • Yes it can, much more likely a problem with cement based render and gypsum plaster than traditional lime render and plaster.

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