In the latest edition of Building Science Insights, Joe Lstiburek once again picks up the topic of detailing slab foundations. This latest article consolidates his current thinking not only balancing structural, thermal and moisture control in all types of slab-on-grade foundations, but also accommodating details for termite inspections and deterring bug and rodent infestations – niggling details that can render otherwise good foam insulation useless.
Concrete Solutions
The absolute easiest slab-on-grade foundation to insulate is a stem wall ... except when it isn't.
Two inches of insulation at the slab edge and under the slab shaved 8,000 Btu/hour off the heating load of this Atlanta slab on grade.