Recent Q&A

• Dampproofing vs Vapor Barrier on Outside Face of Monolithic Slab On Grade

  For a monolithic slab on grade (finished floor elevation 8" higher than surrounding grade) with no real hydrostatic pressure concerns, can the vapor barrier (such as Stego Pango) be terminated…

• Vapor Barrier Termination for Monolithic Slab On Grade

  For a monolithic slab-on-grade, if I run the vapor barrier (Stego Pango) below the slab then down, under, and back up the outside vertical face of the turned-down footing, how/where…

• Assembly Components of a Slab-On-Grade in Southern California

  Greetings GBA Members- I am working on a series of foundation assembly diagrams for some single-family new construction projects in Southern California. We are developing both monolithic slab-on-grade details and crawl…

• Detailing a Slab on Grade

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• Flash and Batt for an Unvented Flat Roof Ceiling

  Greetings everyone. I am working on a modern house in Southern California near the ocean. It is a flat roof with an unvented rafter assembly and we cannot install rigid…