Not sure if correct forum. However, I understand damp sealant for an external wall needs to be put on before weather becomes too cold for successful application. When is the latest date to treat a wall ? I realise the climate is unpredictable !
Sorry for late acknowledgement. Had a holiday and taken advice from Company.
slightly different tack. Is there any way to get a rough estimate of percentage caused by penetrating damp compared to condensation. But dehumidifier.
apologies if not a realistic question.
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