We have a house that was build in 1919...so it's old, and it has the original brick foundation (I believe it's double-brick, pretty sure not triple). It is deteriorating in places (spalling), and from what I've read this is caused in part by the wrong mortar being used (i.e. containing cement, which prevents the old bricks from swelling and moving as they are designed to do...hence the spalling) and moisture of course...how do I go about fixing this? Do I need a new foundation? (I hope not!!!) The sites I've been reading say NOT to waterproof a brick foundation from that time as they are designing to interact with moisture...they are suggesting lime wash...I really just want the deterioration to stop. We don't have flowing water in the basement (and we'd know by now), but we do have efflorescence in places....suggestions? Guidance? Anyone?