R-10 Foamax on Crawl Walls and 20 mil CleanSpace Vapor Barrier on crawl floor
Rim & Band insulated with Spray Foam Insulation
SaniDry Sedona Dehumidifier with Condensate Pump and piers wrapped with 20-mil CleanSpace vapor barrier.
R-11 Fiberglass insulation crawl walls and 6 mil vapor barrier on the ground
Piers wrapped with 6-mil vapor barrier and R-11 vinyl faced fiberglass on walls.
6-mil vapor barrier on crawl space floor and wrapped around piers. R-11 vinyl faced fiberglass on walls.
This Midlothian, VA crawl space was encapsulated at construction. However, this encapsulation did not deliver the results the homeowner was looking for. They began to notice a cat urine or ammonia-like odor in the home, the crawl space was also not as airtight as the homeowner would have liked.
The initial encapsulation included R-11 vinyl faced fiberglass batts attached to the walls and a 6 mil vapor barrier on the floor of the crawl space. The odor, the homeowner noticed was a result of moisture penetrating the porous crawl space walls and saturating the fiberglass insulation.
To remedy this, we installed R-10 Foamax rigid board insulation, 20 mil Clean Space Vapor Barrier, sealed the sill plate and rim & band with spray foam insulation and installed a SaniDry Sedona dehumidifier. This solution will help prevent moisture from entering the crawl space and will control the relative humidity in the crawl space.