hi, the damp course of my house is comprised of two courses of blue brick. the house walls are stepped back by 1" from damp course upwards with a cement fillet on the 'step'. i noticed recently that this fillet looks damp in 4 places where there is a vertical joint in the blue brick below. thinking the cavity may be bridged with droppings i removed a couple of bricks but found the cavity clear to below the damp course level.
what's the remedy please?
should add that this wall is not open to the elements as it is enclosed within a built on garage.
what's the remedy please?
should add that this wall is not open to the elements as it is enclosed within a built on garage.