I recently looked at a home I was considering buying. I stood in the unfinished part of the basement looking at the block work and I could see daylight thru some hairline cracks of the mortar joints. Not big open gaps, but just slivers, maybe 1/32" wide or a hair more or less (no pun intended) some of them running maybe 12 to 20 along a horizontal mortar joint, while others smaller in length. The cracks were horizontal, none vertical and only a few here and there. Foundation seems otherwise solid other than at one point it must've been hit because there is an ever so slight "push in" of part of the wall in which there is also a diagonal ladder step crack spanning several rows, but that was in another part of the foundation.
Are these hairline mortar cracks where I can see daylight of concern I should worry about?
Edited 1/10/2005 1:04 am ET by Pyrotechie