Water intrusion through subsurface soil is a common issue with residential buildings, particularly those that are constructed below the grade level. Practicing common sense during original construction normally alleviates this issue. We exercise common sense during our assessments to identify if potential for moisture intrusion exists. Relationship between exterior grades and interior floors are normally well defined and are protected against moisture intrusion in good common sense construction. However, common sense is not always practiced and faulty construction leads to moisture intrusion when these barriers are not protected.
We normally identify these barriers during site observation visits and test them against adequate protection. The scope of our work normally varies with the complexity of the intrusion and/or complexity of barriers. More often than not we find the basic issues through visual site observations, and at times we request subsurface testing to collect more date and/or to confirm our assumptions.