Chris has got it cock on, the only way to do it is by using a membraine. Rendering it both sides WILL NOT sort out the damp problem, no mater how much waterproofer you use.
They are up in your business because you invited them in by spilling the tea on what you and your man earn.
It is usually performed with one or more other individuals, one beginning with a chuckle followed by a series of hoo-hoos. Soon others join in with hoo-hoos and ha-has in marvelous disharmony until the forest quakes with laughter.
A Noble-man tooke a great liking to a naturall, and had covenanted with his parents to take him from them and to keepe him for his pleaſure, and demanding of the Ideot if he would ſerve him, he made him this anſwere, My Father ſaith he, got me to be his foole of my mother, now if you long to have a foole; go & without doubt you may get one of your owne wife.