We are building a new home on a crawl space, using poured concrete for the foundation. I would like to use Xypex admixture in the concrete, and related Xypex products to seal tie-holes, etc. We plan to backfill around the foundation with free-draining gravel, after installing a good drainage pipe along the footing (sloping out to daylight). We have 2-foot wide overhangs all around the building, with the ground sloping away from the foundation on all sides.
Local contractors aren't familiar with Xypex, and they believe that we should still install an exterior barrier to properly waterproof our foundation. I tend to think that's not necessary, in addition to Xypex and everything else we're doing to control water intrusion at our foundation.
Does Xypex recommend using additional waterproofing methods for residential house foundations?
Posted on 18 Oct 2017