Developed for open-joint cladding systems, Delta-Fassade S is a water-resistive barrier that isn’t susceptible to UV damage. It serves as a drainage plane channeling water from wind-driven rain to the outside of the structure. Vapor permeable and tear resistant, it comes in rolls measuring 4 feet 11 inches wide by 164 feet long. Cost: $1.10 per square foot. Cosella-Dörken Products. 888-433-5824.