Methods for waterproofing architectural surfaces

Abstract

A method for waterproofing an architectural component comprises the steps of applying a waterproofing composition to the component above a grade line to form an non-swelling elastomeric membrane having a tacky exterior and pressing a flexible, non-porous polymeric sheet onto the tacky exterior of the elastomeric membrane. The polymeric sheet is preferably stronger than the elastomeric membrane so as to protect the elastomeric membrane from punctures or tears. Exemplary waterproofing compositions include solutions of thermoplastic elastomers such as styrene/butadiene block copolymer in volatile organic solvents. Exemplary polymeric sheets include two-ply cross laminated high density polyethylene sheets. Preferably, an upper edge of the polymeric sheet is secured to the architectural surface by means of mastic or fiberglass-backed adhesive tape. According to one embodiment, weep holes are provided in a brick wall laid in front of the architectural surface to provide drainage from the space between the brick wall and the architectural surface.

Dependencies are inferred from the claim text.