Background to why I purchased a Hygrometer We bought our house 5 years ago and it needed completely gutting from top to bottom. So we redid everything, including replacing all windows, fitting a new bathroom and kitchen, and re-plastering all the walls; but there was one thing we overlooked. We didn’t realise that the wall underneath the bay window in our bedroom was only a single brick wall (not double as in most houses). This came to our attention when we experienced our first winter in the house, it was very cold around the bay, and black mould grew very rapidly all over this particular ...
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