Exterior Drain Mat Installation
This is related to the problem of moisture in our wine room: https://www.greenbuildingadvisor.com/question/mold-in-poured-concrete-lower-level-of-new-house
When they did the waterproofing for the cap of our front stoop (ceiling of wine room) they removed the top 3′ of drain mat (1st photo). They then re-installed this used/older drain mat that had been laying in the dirt for a while and was also somewhat damaged (as was the top of the mat that was still attached). There are a few concerns with this;
My understanding is that they when re-doing it they should have cut off the top of the old mat to get a clean and uniform edge, applied new, clean, undamaged mat using the original sealing mastic and mating up tight against the lower mat.
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