Sealing slab around added plumbing penetrations
I have a bath in my basement. The bath was added after construction but the roughed in drains were part of the build. When adding the bath, some of the slab was removed to fit the drain. The slab has 4″ of foam and a concrete vapor barrier taped to all penetrations. The foam and vapor barrier have been disturbed by widening this hole (originally formed and covered by a 5 gallon bucket – see picture). The problem is that some of the drain is now level or somewhat higher then the surface of the slab. What is the best way to ‘seal’ this opening? I am concerned about vapor and air infiltration from this opening.
thanks in advance for any ideas
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