I am a builder completing a renovation to a late 19th century Victorian house outside Boston. I have noticed that the brick foundation looks wet even after a prolonged period of dry weather. This mostly appears right at grade but have noticed spots above grade, as well.
A little bit more about the foundation assembly. The foundation is a combination fieldstone wall (below grade) and double wythe brick wall (above grade). We excavated the basement down 16″, which involved pouring 4′ tall, 6″ thick buttress walls in front of the below-grade, fieldstone portion of the foundation. The buttress walls were wrapped in XPS and closed cell spray foam was sprayed from that point up to the rim. A picture is attached of the assembly as well as a couple of shots of the “wet brick” condition.
My feeling on it is that the below grade portion of the wall is taking some amount of water in; there is no drying potential to the inside due the the buttress wall/XPS/closed cell, and the brick is sucking it up to grade. I would be interested to others’ opinions on this and if there are any other similar experiences out there?
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