Woodspoiler wrote in message ...
So how high does damp have to rise before it's classed as rising
damp? I can't vouch for it rising a foot or more, but there is
and effect which may be greater in other circumstances.
3ft is reckoned to be the limit for rising damp so all remedial work inside
is done to that level.
I wonder how much of it is actually falling damp. With rain lashing against
the whole of an outside wall it seems illogical to be blaming everything on
the small amount coming up from below ground by capillary action. Possibly
what happens is that the water penetrates the wall all over, makes its way
down (mainly through the mortar) and then hits the damp course, which forces
it out on to the surface.