A home built in the 1960’s or earlier is almost guaranteed that the exterior weeping tile system is defective. You can really imagine you don’t have one at all. Here, Exterior Water Management: i.e - grading, downspout extensions, etc… (you know the drill) becomes even more important.
Most homes constructed in the 1950's-1960's, have terracotta clay weeping tile, which over a period of years, can (DO) become plugged with clay or sand, or shift, or crumble and collapse (ALL OF THE ABOVE) preventing the water from being carried away from the house.
Homes built prior to 1950 almost never have any weeping tile system at all.
INSPECTOR HOMES "The People's Inspector" Remo Colantoni (905) 325-6976 NACHI member