Original concrete trade vintage catalog for AMERICAN ENKA COMPANY. Main office was located in Enka, NC. Enkadrain foundation drainage, a solution to drainage problems. It is a two layer composite consisting of a polyester nonwoven filter fabric heat-bonded to Enkamat matting. Relieves hydrostatic pressure occurring in wet clay and silt soils adjacent to underground basement walls and retaining walls. Product presentation, uses applications, installation instructions and specifications provided in detail. This unique 1982 old four page architectural specifications brochure would make a marvelous addition to your engineering collection. Pages are loose and contain a small amount of residual glue on edge.