For over seventy years, Thoro System Waterproofing., a wholesale/retail provider of waterproofing and restoration materials for concrete and masonry, has been serving dealers, contractors and D-I-Y's in Eastern PA, South Jersey and Delaware. Starting in a one-car garage in Drexel Hill PA in 1936 and moving from there to Springfield in 1947, Thoro System speedily earned the trust and following of dealers
Paul Steiner — Wayne Pfaff, owner of Thoro Systems was a pure example of a business man with a heart, and compassion for people.