Listed on the U.S. National Register of Historic Places, the Cathedral Church of St. Paul in Boston Massachusetts went through vigorous interior renovations to create long term stability for its patrons. With extreme winters on the east coast, there needed to be radiant heating tubing in the new concrete floor which becomes a challenge. With high-paste content and the need to place joints in the concrete - shrinkage cracking and curling would take place and result in floor damages. PREVent-C Shrinkage Reduc