Is it OK to install the building wrap upside down, sideways, or with the printing facing the wall?
In the case of RainDrop® building wrap, the product must be installed with the correct side to the exterior and the drainage channels vertical, or at a slight angle from vertical, for the product to function properly. (Horizontal drainage channels do not really work.) Performance of flat wraps is not particularly affected by install direction, from a fabric perspective. However, installing wrap consistently indicates that you have followed guidelines to achieve a proper water-resistive barrier. Care should be taken to install the wrap in a shingling fashion (check local codes for overlap requirements). In addition, the appearance of the final job sends a message. You can guess what message a sloppy, inconsistent installation sends.
