Water or damp proofing concrete stem wall for slab on ground construction - GreenBuildingAdvisor
Summary
The article discusses the considerations for damp proofing concrete stem walls in slab-on-ground construction, particularly in cold, dry climates.
Why It Matters
Understanding the implications of damp proofing in construction is crucial for ensuring the longevity and moisture management of buildings. This discussion is particularly relevant for builders and architects working in similar climates, as it addresses practical concerns about moisture control and construction costs.
Key Takeaways
- Damp proofing may not be necessary for stem walls that do not enclose living spaces.
- Consideration of moisture management is essential in cold, dry climates.
- Cost-benefit analysis is important when deciding on damp proofing measures.
Water or damp proofing concrete stem wall for slab on ground construction Ananda_Z | Posted in General Questions on February 27, 2026 03:18pm Hello GBA friends, I’m working on details for a new construction build in WA climate zone 6. Cold and dry area. Single story, slab on ground floor. See detail attached. This stem wall does not enclose any interior spaces below grade. Does adding damproofing to the exterior side of the concrete stem wall from footing up to 6″ below the top of the stem wall achieve anything beneficial? Would it keep the area under the slab drier, or would it inhibit drying of moisture under the slab? Thanks! Answer GBA Detail Library A collection of one thousand construction details organized by climate and house part Search and download construction details Join the leading community of building science experts Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field. Start free trial Related Questions Recessing concrete stem wall for zero-threshold prior to choosing door manufacturer Another stem wall damp proofing question Exterior concrete stem wall wicking 2-foot concrete stem wall: Interior insulation or not? Replies paulmagnuscalabro | Feb 27, 2026 04:41pm | #1 Ananda_z, I hope someone more knowledgeable than me will weigh in, but: Pretty sure you are not running any risks by damp proofing the foundation below grade. Not sure it's totally necessary either, so it could j...
