05/27/2026
Exterior seals last 50 years on average. The bottom seal of the CRAWL SPACE less than 10?! Modern crawl space wet floodproofing solutions fail due to a lack of understanding of the dynamics involved. The SUBGRADE or BELOW GRADE crawl space is the beginning of the end of a structure. It's likely the beginning of respiratory issues from mold as well... Keeping unmanaged water out of the envelope is key to keeping mold out.