Hi ladies just wondering if anyone can help? A black patch of damp formed on our kitchen wall, we assumed it was coming from the bath so we resealed the bath, we also put a plastic strip thing around it. When OH had a shower last night, you could see the kitchen wall wet, and it was over a wider area than where the black patch formed. I'm not sure what more we can do? We live in a council house but would they charge for coming out!?