rising damp?

23 Dec 2007
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United Kingdom
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.
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Sounds like the blue brick is engineering brick, and is therefore impervious to rising damp.
In any event if there is no damp internally why are you bothered?.
The fillit is probably damp due to a local phenomenom known as "rain", it's purpose is to deflect the "rain" from the wall, often getting damp in the process. Seriously though as Anobium points out whats the problem?
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Rain inside the garage???

Agree with comments though.

If it ain't broke............don't start deconstructing your house! :unsure:
2 courses of Staffs is usually OK to stop damp, but the mortar should be 3/1, and if a bit weaker may be allowing some damp through the joints, but not really a worry on the external skin.

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