Hi, it's RS50 : the wet wall is directly above the vent, and extends for about a metre up the wall - it's really wet, ie when I put my hand on it, it comes away wet.
Thanks
I have a standard boiler (Potterton Kingfisher) on the ground floor of my house. The vent is situated on the front wall, and a large area of the wall directly above the vent is soaking wet within one hour of running the heating system.
I don't think this has been happening throughout the...