Crawl Space Moisture Control - Air Seal

The crawl space is air sealed by insulating the sill plate, that's where the first piece of wood meets the block foundation and it's a big source of moisture infiltration. We also seal around all penetrations through the foundation wall to the outside. Sealing these gaps makes a big difference in controlling air and moisture entering the space. We want to keep as much moisture out of the space as possible so the dehumidifier can run efficiently and keep the space dry to prevent future damage to the space.