- Full below-grade basement
- Poured Concrete walls/slab
A few years ago I had major waterproofing done to our basement/foundation. When they did this, they also installed an external dimpled waterproofing membrane across 2 or the 4 walls. From what I know, this helps with drainage towards the footer french drains.
I will begin framing the basement and wanted to know if a moisture barrier (not a vapor barrier as I've learned) is necessary behind the studs on these foundation walls which had an external barrier already applied. I intended on using an insulating foamboard (XPS I believe is the industry name) behind the studs for the untreated basement walls.